NSN Lookup

Electrical and Electronic Equipment Components

Federal Supply Group (FSG): 59

NATO Supply Classification Group (NSG): 59

Note-Mounting hardware, included in classes of this group, includes such specially designed items as brackets, holders, retainers, etc. Excluded from classes in this group are such hardware items as screws (Class 5305), bolts (Class 5306), studs (Class 5307), washers (Class 5310), rivets (Class 5320), and other common items indexed to specific classes, other than in Group 59. The FSC indexes and structure will govern the classification of items used on or with mounting hardware cited above.

FSG 59 Electrical and Electronic Equipment Components
FSG 59 Electrical and Electronic Equipment Components

Frequently Asked Questions (FAQ) for Federal Supply Group 59

What is Federal Supply Group 59?
FSG 59 is the Federal Supply Group (formally known as NATO Supply Classification Group NSG 59) in the USA for supply items codified in the category of Electrical and Electronic Equipment Components.
What is NATO Supply Classification Group 59?
NSG 59 is the NATO Supply Classification Group (also known as Federal Supply Group FSG 59 in the USA) for supply items codified in the category of Electrical and Electronic Equipment Components.
Which Federal Supply Classes are in FSG 59?
FSG 59 contains the following Federal Supply Classes (FSC) (formally known as NATO Supply Classification Class [NSC]): 5927, 5970, 5915, 5977, 5961, 5998, 5920, 5959, 5930, 5963, 5999, 5925, 5975, 5960, 5945, 5950, 5935, 5996, 5905, 5910, 5940, 5965, 5955, 5990, 5995, 5980, 5985, 5962
Which NATO Supply Classification Classes are in NSG 59?
NSG 59 contains the following NATO Supply Classification Classes (NSC) (also known as Federal Supply Class [FSC] in the USA): 5927, 5970, 5915, 5977, 5961, 5998, 5920, 5959, 5930, 5963, 5999, 5925, 5975, 5960, 5945, 5950, 5935, 5996, 5905, 5910, 5940, 5965, 5955, 5990, 5995, 5980, 5985, 5962

Supply Items Included in Federal Supply Group 59

What is an Insulator Assembly? 268 Items
An Insulator Assembly is two or more insulators on a common mounting or mounted on each other. Do not use for single complete feedthru insulators (double bowl type) which are termed INSULATOR, FEEDTHRU regardless of complexity.
What is a Pin Cap Insulator? 32 Items
A Pin Cap Insulator (INSULATOR,PIN CAP) is an insulator having an integral provision for rigidly assembling one upon the other for the purpose of extending its insulating range.
What is a Standoff Insulator? 2279 Items
A Standoff Insulator (INSULATOR,STANDOFF) is an insulator which is specifically designed to support a conductor or an item at a predetermined spacing from a mounting surface. It may include mounting and/or conducting hardware.
What is a Strain Insulator? 298 Items
A Strain Insulator (INSULATOR,STRAIN) is an insulator specifically designed to transmit to the tower, or other support, the entire pull of a conductor or guy wire.
What is a Suspension Insulator? 37 Items
A Suspension Insulator (INSULATOR,SUSPENSION) is an insulator having an integral provision for the nonrigid assembling of one upon the other for the purpose of extending its insulating range. It is specifically designed to suspend a conductor from a tower or other support.
What is an Electrical Insulation Cloth? 73 Items
An Electrical Insulation Cloth (INSULATION CLOTH,ELECTRICAL) is a fabric of natural or synthetic fibers such as cotton, silk, rayon, glass, asbestos or nylon in widths of 12 inches (304.8 millimeters) or more, and which is specifically designed to prevent any undesirable flow of current between a conductor(s) and/or other objects. Excludes PLASTIC SHEET; and items which do not have definite rated electrical characteristics. See also INSULATION TAPE, ELECTRICAL.
What is an Electrical Insulation Sheet? 1689 Items
An Electrical Insulation Sheet (INSULATION SHEET,ELECTRICAL) is a material whose thickness is small in comparison to its length and width, and which is specifically designed to prevent any undesirable flow of current between a conductor(s) and/or other objects. Excludes items which do not have definite rated electrical characteristics. Excludes INSULATION CLOTH, ELECTRICAL; INSULATION TAPE, ELECTRICAL and PLASTIC SHEET. For electrical insulation sheets fabricated for a specific application, see INSULATOR (as modified).
What is an Electrical Insulation Sleeving? 21369 Items
An Electrical Insulation Sleeving (INSULATION SLEEVING,ELECTRICAL) is a rigid or flexible tubing having uniform inside and outside diameters in the overall length. It is specifically designed to prevent any undesirable flow of current between conductors and other objects. Includes shrinkable type tubing, items in bulk and in specific fabricated lengths (cut to size). Excludes items not having rated electrical characteristics. Also excludes BUSHING, SLEEVE; CABLE NIPPLE, ELECTRICAL; CONDUIT (as modified); INSULATION SLEEVING, ELECTRICAL, SPECIAL PURPOSE; INSULATION SLEEVING, THERMAL; SLEEVE, MARKER, CABLE; SLEEVING, TEXTILE, ELECTRICAL; TUBING, GLASS; and TUBING, NONMETALLIC.
What is a Cooling Electrical Insulator? 141 Items
A Cooling Electrical Insulator (INSULATOR,ELECTRICAL,COOLING) is an item consisting of a coil of insulating tubing for the purpose of containing a column of liquid. This liquid is used to cool an element at a high electrical potential from ground (such as the plate of an electron tube or a high wattage resistor), and the column is of such length as to provide resistance sufficient to reduce the leakage of current between the element at high potential and the low-potential cooling system to a negligible value.
What is an Electrical Insulation Rod? 271 Items
An Electrical Insulation Rod (INSULATION ROD,ELECTRICAL) is a solid material of natural occuring mineral mica, ceramic, or from material which has been electrically rated by government or industry standards or specifications, where the length is greater in proportion to its diameter or cross-sectional dimensions, and which is specifically designed to prevent any undesirable flow of current between conductors and/or objects. For items that do not have definite rated electrical characteristics, see NONMETALLIC ROD. For specific application, see INSULATOR (as modified).
What is an Electrical Conductor Insulation Hose? 57 Items
An Electrical Conductor Insulation Hose (INSULATION HOSE,ELECTRICAL CONDUCTOR) is an item specifically designed to prevent any undesirable split along its axis for mounting on an exposed energized electrical conductor to provide a temporary insulating barrier between the electrical conductor and personnel in close proximity thereto.
What is an Insulator Insulation Hood? 87 Items
An Insulator Insulation Hood (INSULATION HOOD,INSULATOR) is an item specifically designed to prevent any undesirable flow of current between conductors and/or other objects for mounting on an insulator and exposed energized electrical conductors to provide an insulating barrier between the items and personnel in close proximity thereto.
What is an Electrical Insulation Blanket? 356 Items
An Electrical Insulation Blanket (INSULATION BLANKET,ELECTRICAL) is a flexible material specifically designed to prevent any undesirable flow of current between conductors and/or other objects for the purpose of covering exposed energized electrical items and to provide a temporary insulating barrier between the items and personnel in close proximity thereto. Excludes items of supply in rolls or bulk form.
What is an Electrical Insulating Varnish? 267 Items
An Electrical Insulating Varnish (INSULATING VARNISH,ELECTRICAL) is a liquid preparation which dries by evaporation and/or oxidation and is specifically compounded to provide electrical insulating characteristics. It may have other incidental values such as resistance to moisture, fungus, or the like. For items which are not specifically compounded to provide electrical insulating characteristics, use VARNISH, OIL or LACQUER. See also INSULATING COMPOUND, ELECTRICAL.
What is an Electrical Insulating Compound? 396 Items
An Electrical Insulating Compound (INSULATING COMPOUND,ELECTRICAL) is a pre-mixed chemical composition which is specifically compounded to provide electrical insulating characteristics. The item includes such forms as liguids, paste, crystal, or solids which are designed to be melted or changed in configuration prior to usage, or when applied. For items with two or more separate chemical materials, see INSULATING COMPOUND KIT, ELECTRICAL. For items not specifically compounded to provide electrical insulating characteristics, see SEALING COMPOUND. Excludes INSULATING OIL, ELECTRICAL and INSULATING VARNISH, ELECTRICAL.
What is a Cleat Insulator? 82 Items
A Cleat Insulator (INSULATOR,CLEAT) is an insulator of a generally rectangular shape which is designed to be attached to a rigid structure. It consists of two separate parts. For items of a generally cylindrical shape, see INSULATOR, KNOB.
What is a Knob Insulator? 44 Items
A Knob Insulator (INSULATOR,KNOB) is an insulator of generally cylindrical shape which is designed to be attached to a rigid structure.
What is a Feedthru Insulator? 545 Items
A Feedthru Insulator (INSULATOR,FEEDTHRU) is an insulator which is specifically designed to provide for the passage of electrical conductors through such items as panels, bulkheads, walls, and the like. It consists of two or more insulators, including one or more studs fed through the items in such a way as to be used as conductors. The studs may be used for mounting. See also INSULATOR, BOWL; and TERMINAL, FEEDTHRU, INSULATED.
What is a Pin Insulator? 77 Items
A Pin Insulator (INSULATOR,PIN) is an insulator which is grooved for guiding purposes and which is specifically designed to be mounted on a crossarm pin or bracket pin.
What is a Spreader Insulator? 163 Items
A Spreader Insulator (INSULATOR,SPREADER) is an insulator which is specifically designed to separate or hold apart free swinging electrical conductors.
What is a Washer Insulator? 6691 Items
A Washer Insulator (INSULATOR,WASHER) is an insulator that is essentially thin and flat, with one through hole centrally located. The general shape may vary by the addition of features such as beveled edges, indented surfaces, through hole keys, and/or peripheral flats. The thickness measured between the two parallel bearing surfaces must not exceed 25 percent of the outside diameter or the shortest distance between peripheral flats. The thickness measured between the two parallel bearing surfaces must not exceed 25 percent of the outside diameter or the shortest distance between peripheral flats. Excludes items with more than one hole. See also INSULATOR, DISK; INSULATOR, BEAD; INSULATOR, BUSHING; and INSULATOR, PLATE
What is a Disk Insulator? 2444 Items
A Disk Insulator (INSULATOR,DISK) is an insulator that is essentially thin, flat, and round in shape, with or without holes. The general shape may vary by the addition of such features as beveled edges, indented surfaces, through-hole key and/or peripheral flats. It may have one or more holes off center; if there are two or more holes, one may be centrally located. Excludes MOUNTING PAD, ELECTRICAL-ELECTRONIC COMPONENT.
What is a Plate Insulator? 15198 Items
A Plate Insulator (INSULATOR,PLATE) is an insulator having flat surfaces, with or without holes, whose thickness does not exceed 25 percent of its length or width, whichever is smaller, and whose shape is other than round. Excludes INSULATOR (1), SPACER; INSULATOR (1), WASHER; MOUNTING PAD, ELECTRICAL-ELECTRONIC COMPONENT; PLATE, ELECTRICAL SHIELD; and TERMINAL BOARD.
What is a Bead Insulator? 319 Items
A Bead Insulator (INSULATOR,BEAD) is an insulator specifically designed to be used as a spacer in, or in conjunction with, such items as coaxial cables, transmission lines, brush shunts, test leads, high voltage lines and the like. Has an axial hole through which the wire passes and the length of which is considerably more than 25 percent of the largest diameter perpendicular to the hole. The external shapes may be variations of cylindrical and spherical shapes.
What is a Bowl Insulator? 306 Items
A Bowl Insulator (INSULATOR,BOWL) is an insulator used for wire entering or feedthru purposes. May include mounting and/or conducting hardware. Includes replacement bowls for feedthru insulators. Characterized by one or more bowl or bell shaped insulator surfaces.
What is a Bushing Insulator? 8351 Items
A Bushing Insulator (INSULATOR,BUSHING) is an insulator designed to fit into and reduce the effective diameter of the hole(s). It may include mounting and/or conducting hardware. For flexible bushing-type insulators that are self-retaining and consist of two facing flanges separated by a neck, see GROMMET, NONMETALLIC. Also see SPACER, SLEEVE and BUSHING, SLEEVE. Excludes INSULATION SLEEVING, ELECTRICAL.
What is an Angle Bracket Insulator? 178 Items
An Angle Bracket Insulator (INSULATOR,ANGLE BRACKET) is an insulator formed into a dihedral angle (generally a right angle) designed to position, align or support an item(s) in relation to another.
What is an Electrical Textile Sleeving? 1491 Items
An Electrical Textile Sleeving (SLEEVING,TEXTILE,ELECTRICAL) is a treated or untreated flexible tubing of natural or synthetic fibers such as cotton, silk, rayon, glass, or nylon, specifically designed to inclose a wire or cable but does not have a definite rated electrical characteristic. Includes items in bulk or in definite fabricated lengths. For items having definite rated electrical characteristics, see INSULATION SLEEVING, ELECTRICAL.
What is an Electrical Insulating Compound Kit? 154 Items
An Electrical Insulating Compound Kit (INSULATING COMPOUND KIT,ELECTRICAL) is a collection of two or more separate chemical materials which, when mixed, forms an electrical insulating composition prior to usage, or when applied. It is usually composed of liquid, paste, crystal, or solid forms with curing agents, or the like. For pre-mixed electrical insulating items, see INSULATING COMPOUND, ELECTRICAL. For items not specifically compounded for electrical insulating, see SEALING COMPOUND. Excludes INSULATING OIL, ELECTRICAL and INSULATING VARNISH, ELECTRICAL.
What is an Electrical Insulation Tape? 2455 Items
An Electrical Insulation Tape (TAPE,INSULATION,ELECTRICAL) is a narrow strip of woven or processed material less than twelve inches (304.8 mm) in width. It is specifically designed to prevent any undesirable flow of current between conductors and other objects. The item tends to resist any physical change, in contrast to an insulating compound in tape form which will fuse under a specified heat or pressure. It may or may not have adhesive backing. Excludes items not having definite rated electrical characteristics, such as TAPE, ADHESIVE, RUBBER; TAPE, PRESSURE SENSITIVE ADHESIVE; TAPE, SEMI-CONDUCTING, ELECTRICAL; and TAPE, SHIELDING, ELECTRICAL. See also INSULATION CLOTH, ELECTRICAL and INSULATING COMPOUND, ELECTRICAL.
What is a Spacer Insulator? 901 Items
A Spacer Insulator (INSULATOR,SPACER) is an insulator having flat surfaces, with or without holes, whose thickness exceeds 25 percent of its length or width, whichever is smaller, and whose shape is other than round. It is used to support and/or separate electrical conductors and components. Excludes INSULATOR (1), STANDOFF; INSULATOR (1), PLATE; and INSULATOR (1), SPREADER.
What is an Insulator Adapter? 78 Items
An Insulator Adapter (ADAPTER,INSULATOR) is an item constructed to establish the necessary accommodations to connect two or more items, one or more being insulators, whose physical design and/or function will not normally warrant their connection.
What is an Insulator Insert? 118 Items
An Insulator Insert (INSERT,INSULATOR) is an item designed to fit into an electrical insulator to form an integral liner or seat for positioning or holding another item.
What is an Electrical Cable Insulation Repair Kit? 58 Items
An Electrical Cable Insulation Repair Kit (REPAIR KIT,ELECTRICAL CABLE INSULATION) is consists of a box containing a group of items used to make an insulating bond around a cable after the cable has been spliced. Excludes items which employ heat to form a bond.
What is a Special Purpose Electrical Insulation Sleeving? 4827 Items
A Special Purpose Electrical Insulation Sleeving (INSULATION SLEEVING,ELECTRICAL,SPECIAL PURPOSE) is a rigid or flexible tubing having other than uniform fabricated shapes or forms. It is specifically designed to prevent any undesirable flow of current between conductors or between conductors and other objects. Includes shrinkable type items. Excludes items not having rated electrical characteristics. Also excludes BUSHING, SLEEVE; CABLE NIPPLE, ELECTRICAL; and INSULATION SLEEVING, ELECTRICAL.
What is an Electrical Insulation Sleeving Set? 59 Items
An Electrical Insulation Sleeving Set (INSULATION SLEEVING SET,ELECTRICAL) is a collection of two or more INSULATION SLEEVING, ELECTRICAL of different characteristics such as length, diameter, and the like.
What is a Band Pass Filter? 11434 Items
A Band Pass Filter (FILTER,BAND PASS) is an item designed to pass frequencies within a specified range (band) and to suppress frequencies outside the range (band). Excludes a single inductance, or a single capacitance, or a single resistance. See COIL (as modified); REACTOR; CAPACITOR (as modified); and RESISTOR (as modified).
What is a Band Suppression Filter? 583 Items
A Band Suppression Filter (FILTER,BAND SUPPRESSION) is an item designed to suppress frequencies within a specified range (band) and to pass frequencies outside the range (band). Excludes a single inductance, a single capacitance, or a single resistance. See COIL (as modified); CAPACITOR (as modified); and RESISTOR (as modified).
What is an Impedance Stabilizing Group? 15 Items
An Impedance Stabilizing Group is two or more items which do not operate as a set or mechanical system, but which are used as part of a set or mechanical system to couple two circuits in such a manner that the impedance is maintained at a fixed ratio over a wide band of frequencies.
What is a Radio Frequency Interference Filter? 16145 Items
A Radio Frequency Interference Filter (FILTER,RADIO FREQUENCY INTERFERENCE) is an item designed to suppress undesired (interfering) frequencies and have a minimal effect on the desired frequencies when inserted in an electrical power circuit. Excludes items which consist of a single capacitor, inductor, resistor, or devices consisting of only two or more circuit elements of the same basic name. Excludes FILTER, LOW PASS and SUPPRESSOR, IGNITION INTERFERENCE. For items designed to be inserted in a line which is primarily intended to carry high frequency waves modulated with signals, such as antenna lead-in, see FILTER, BAND SUPPRESSION and FILTER, BAND PASS. See also LIMITER, ELECTRICAL NOISE.
What is a Parasitic Suppressor? 828 Items
A Parasitic Suppressor (SUPPRESSOR,PARASITIC) is an item consisting of an inductance and a resistance normally in parallel. The inductance is usually wound around the resistor. Half of the turns may be wound to inductively oppose the other half. It is designed to be inserted in the circuit of a radio frequency stage to suppress high frequency parasitic oscillations. For items designed to widen the band width, or amplify a portion of the band in an amplifier circuit, see COIL, RADIO FREQUENCY.
What is a Capacitor-Resistor? 919 Items
A Capacitor-Resistor is an item consisting of one or more capacitors and one or more resistors molded together, housed together in a common case, or mounted on a common board. The individual capacitors and resistors are not separable and the overall item usually has various design applications; hence, cannot be considered a subassembly. Do not use if more applicable item names, such as FILTER (as modified), or NETWORK (as modified), exist.
What is a Hybrid Circuit Network? 347 Items
A Hybrid Circuit Network (NETWORK,HYBRID CIRCUIT) is a component consisting of two or more different items, such as resistors, telephone repeating coils and capacitors, electrically connected and designed to provide facilities for connecting one or more two-wire communications circuits to one or more four-wire communications circuits. may include band-pass filters and/or protective apparatus. For items fabricated by monolithic and/or thin film techniques, see MICROCIRCUIT (as modified). See also NETWORK, IMPEDANCE MATCHING.
What is a High Pass Filter? 629 Items
A High Pass Filter (FILTER,HIGH PASS) is an item designed to pass all frequencies above a specified frequency. Excludes a single inductance, a single capacitance, or a single resistance. See COIL (as modified); REACTOR; CAPACITOR (as modified); and RESISTOR (as modified).
What is a Low Pass Filter? 3152 Items
A Low Pass Filter (FILTER,LOW PASS) is an item designed to pass all frequencies below a specified frequency. Excludes a single inductance, a single capacitance, or a single resistance. See COIL (as modified); REACTOR; CAPACITOR (as modified); and RESISTOR (as modified).
What is an Electronic Phase Shifter? 428 Items
An Electronic Phase Shifter (PHASE SHIFTER,ELECTRONIC) is an electronic component or a grouping of electronic components that induces a fixed or variable phase shift to an electronic signal from 0 to 360 degrees. The item may be adjusted by means of a slotted shaft, knurled knob or motor driven and may or may not be provided with a locking device.
What is an Electrical Filter Retainer? 137 Items
An Electrical Filter Retainer (RETAINER,ELECTRICAL FILTER) is an item designed primarily to station and/or restrain the movement of one or more electrical filter(s) in its/their normal mounting position.
What is a Low-Pass-High Pass-Band Pass Filter? 22 Items
A Low-Pass-High Pass-Band Pass Filter (FILTER,LOW-PASS-HIGH PASS-BAND PASS) is a single item having the triple function of FILTER, LOW PASS; FILTER, HIGH PASS and FILTER, BAND PASS. Each filter may have a separate input connection, but each filter must have separate output connections.
What is a Circuit Protection Network? 405 Items
A Circuit Protection Network (NETWORK,CIRCUIT PROTECTION) is a group of items such as resistors, semiconductors and the like which are electrically connected and designed to effect a current and/or voltage limitation in one or several coupled circuits.
What is a Band Pass-Band Suppression Filter? 121 Items
A Band Pass-Band Suppression Filter (FILTER,BAND PASS-BAND SUPPRESSION) is a single item having the dual function of a FILTER, BAND PASS and FILTER, BAND SUPPRESSION. Each filter may have separate input connections, but each filter must have separate output connections.
What is a Band Pass-Low Pass Filter? 161 Items
A Band Pass-Low Pass Filter (FILTER,BAND PASS-LOW PASS) is a single item having the dual function of a FILTER, BAND PASS and a FILTER, LOW PASS. Each filter may have separate input connections, but each filter must have separate output connections. Excludes a single inductance, capacitance, or resistance. See COIL (as modified); REACTOR; CAPACITOR (as modified); and RESISTOR (as modified).
What is a Direct Current Power Filter? 686 Items
A Direct Current Power Filter (FILTER,DIRECT CURRENT POWER) is a device consisting of a combination of two or more items such as inductors, capacitors, or resistors in any combination, so designed that when properly placed in an electrical circuit they will smooth out voltage fluctuations of the direct current output of power supplies, dynamotors, generators, and the like. Do not use for items which consist of a single resistor, capacitor, or inductor used to perform the same function.
What is a High Pass-Low Pass Filter? 108 Items
A High Pass-Low Pass Filter (FILTER,HIGH PASS-LOW PASS) is a single item having the dual function of a FILTER,HIGH PASS and a FILTER,LOW PASS. Each filter may have a separate input connection, but each filter must have separate output connections. Excludes a single inductance, capacitance, or resistor. See FILTER,BAND SUPPRESSION.
What is an Electrical Filter Assembly? 4068 Items
An Electrical Filter Assembly (FILTER ASSEMBLY,ELECTRICAL) is two or more electrical filters on a common mounting or mounted on each other. Does not include coils, capacitors or resistors alone.
FILTER SUBASSEMBLY 498 Items
What is an Impedance Matching Network? 368 Items
An Impedance Matching Network (NETWORK,IMPEDANCE MATCHING) is a grouping of two or more different discrete items, such as resistors, coils, and capacitors, electrically connected and used as a unit to couple two or more circuits in such a manner that the impedance of each circuit will be equal to the impedance into which it hooks. For items fabricated by monolithic and/or thin film techniques, see MICROCIRCUIT (as modified). See also ATTENUATOR (as modified); and TRANSFORMER (as modified). Excludes RESISTOR SET, MATCHED.
What is a Line Balancing Network? 40 Items
A Line Balancing Network (NETWORK,LINE BALANCING) is a grouping of two or more different items such as resistors, coils and capacitors, electrically connected and used to couple two or more lines when these lines are at different levels such as "ground" and "insulated from ground." For items fabricated by monolithic and/or thin film techniques, see MICROCIRCUIT (as modified). See also ATTENUATOR(as modified); FILTER (as modified); TRANSFORMER (as modified); and EQUALIZER (as modified).
What is a Phase Changing Network? 381 Items
A Phase Changing Network (NETWORK,PHASE CHANGING) is a grouping of two or more different discrete items, such as resistors, coils, or capacitors, electrically connected and used as a unit to effect a change in phase, such as shifting, splitting, and inversion of voltage or current in a circuit. For items fabricated by monolithic and/or thin film techniques, see MICROCIRCUIT (as modified).
What is a Pulse Forming Network? 368 Items
A Pulse Forming Network (NETWORK,PULSE FORMING) is a grouping of two or more different discrete items, such as resistors, coils, and capacitors, electrically connected and used to shape the leading and/or trailing edge of a pulse. For items fabricated by monolithic and/or thin film techniques, see MICROCIRCUIT (as modified). See also ATTENUATOR (as modified); FILTER (as modified); and TRANSFORMER (as modified).
What is a Summation Network? 370 Items
A Summation Network (NETWORK,SUMMATION) is a grouping of two or more different discrete items, such as resistors, capacitors, or coils, electrically connected and designed to sum two or more sources of data and combine into a single input for a computer or other electrical or electronic equipment. For items fabricated by monolithic and/or thin film techniques, see MICROCIRCUIT (as modified).
What is a Temperature Compensating Network? 24 Items
A Temperature Compensating Network (NETWORK,TEMPERATURE COMPENSATING) is a grouping of two or more different discrete items, such as resistors, coils, and capacitors, electrically connected and designed so that its electrical constants change with temperature in a predetermined manner. For items fabricated by monolithic and/or thin film techniques, see MICROCIRCUIT (as modified). See also ATTENUATOR (as modified); FILTER (as modified); and TRANSFORMER (as modified).
What is an Electric Organ Harmonic Suppressor? 13 Items
An Electric Organ Harmonic Suppressor (SUPPRESSOR,HARMONIC,ELECTRIC ORGAN) is an item consisting of a coil of wire with a core of magnetic material which is tuned to a specific frequency either by means of its own distributed capacitance or with a commonly mounted capacitor, specifically designed to suppress undesired harmonics generated by a tone generator of an electronic organ.
What is an Unitized Rectifier Network? 133 Items
An Unitized Rectifier Network (RECTIFIER NETWORK,UNITIZED) is two or more diode semiconductor devices combined with resistors and capacitors to form a circuit network designed to function as a unit in changing alternating current to direct current. The diode devices are internally connected in series and incorporate parallel resistors and capacitors, as compensation networks, shunting each diode. The item is permanently cased, encapsulated, potted, or molded together to form an inseparable unit. These units may be designed as either half-wave or full-wave rectifiers and may be mounted to form either single phase or three phase bridges. For interconnected items arranged in stack(s), see RECTIFIER, SEMICONDUCTOR DEVICE. For items fabricated in the form of a monolithic or thin film structure that perform the function of a circuit, see INTEGRATED CIRCUIT (as modified). Excludes SEMICONDUCTOR DEVICES, UNITIZED; SEMICONDUCTOR DEVICE ASSEMBLY; and RECTIFIER, SEMICONDUCTOR DEVICE, UNITIZED.
What is an Alternating Current Power Filter? 16 Items
An Alternating Current Power Filter (FILTER,ALTERNATING CURRENT POWER) is a device consisting of a combination of two or more items such as inductors, capacitors, or resistors in any combination, so designed that when properly placed in an electrical circuit they will smooth out voltage fluctuations of the alternating current output of power supplies, dynamotors, generators, etc. Do not use for items which consist of a single resistor, capacitor, or inductor used to perform the same function.
What is a Collector Ring Contact Set? 36 Items
A Collector Ring Contact Set (CONTACT SET,COLLECTOR RING) is a grouping of two or more separate collector ring contacts.
What is an Electrical Contact Brush Holder Assembly? 1157 Items
An Electrical Contact Brush Holder Assembly (HOLDER ASSEMBLY,ELECTRICAL CONTACT BRUSH) is an item consisting of two or more HOLDER, ELECTRICAL CONTACT BRUSH on a common mounting or mounted on each other, or one HOLDER, ELECTRICAL CONTACT BRUSH mounted on a bracket. May include facilities for applying pressure to the brush(es) and may also be furnished with the brush(es). For items consisting of two or more brush holders (boxes) cast as an inseparable unit, see HOLDER, ELECTRICAL CONTACT BRUSH. See also RING, HOLDER, ELECTRICAL BRUSH.
What is an Electrical Contact Brush? 8555 Items
An Electrical Contact Brush (BRUSH,ELECTRICAL CONTACT) is an item specifically designed to be used in the transfer of electrical energy to or from another conducting surface. Either the brush or the surface is continually moving during the transfer of energy. The brush is usually composed in part of some form of the element carbon. Includes: (1) a single brush either with or without an attached shunt (flexible wire lead) and/or a helical or flat type pressure spring; (2) a split brush composed of two or more pieces (wafers), which are used in place of one brush usually connected together by individual shunts to a common terminal; (3) paired brushes composed of two identical or non-identical brushes connected together by a common shunt either with or without pressure springs or connected by individual shunts to a common terminal, or with pressure springs and connected to a common bar, bracket or the like either with or without individual shunts; (4) multiple brushes composed of more than two identical or non-identical brushes without pressure springs connected by individual shunts to a common terminal, or with pressure springs and connected to a common bar, bracket or the like by individual shunts. Does not include moving contacts which make and slide past stationary contacts, but are stationary while the circuit is conducting, such as the sliding contacts on a rheostat or the stationary contact on a synchro. Excludes: CONTACT, ELECTRICAL; and CONTACT ASSEMBLY, ELECTRICAL.
What is an Electrical Contact Ring Assembly? 793 Items
An Electrical Contact Ring Assembly (RING ASSEMBLY,ELECTRICAL CONTACT) is two or more electrical contact rings on a common mounting or mounted on each other. May include contacts, integral brushes, brush holder assemblies, and connectors.
What is an Electrical Contact Ring? 731 Items
An Electrical Contact Ring (RING,ELECTRICAL CONTACT) is an item consisting of a continuous electrically conductive material of circular or ring shape specifically designed to be used in conjunction with a contact brush to establish an electrical circuit between a rotating item and a stationary item. See also COMMUTATOR.
What is an Electrode? 713 Items
An Electrode is an item of electrically conductive material which acts as a terminal through which an electric current enters or leaves a liquid or gas. The item does not provide filler material or act as a lighting media. Excludes ELECTRODE, WELDING; ELECTRODE, CUTTING, TUBULAR and ELECTRODE, CARBON, LIGHTING.
HOLDER,ELECTRICAL CONTACT RING 40 Items
What is an Electrical Contact Brush Holder? 3435 Items
An Electrical Contact Brush Holder (HOLDER,ELECTRICAL CONTACT BRUSH) is a holder designed to accommodate and position a brush against a commutator or collector ring. Also includes items consisting of two or more brush holders (boxes) cast as an inseparable unit. May include facilities for applying pressure to the brush(es) and may also be furnished with the brush(es). See also HOLDER ASSEMBLY, ELECTRICAL CONTACT BRUSH.
What is an Electrical Contact Brush Carbon Stock? 218 Items
An Electrical Contact Brush Carbon Stock (CARBON STOCK,ELECTRICAL CONTACT BRUSH) is a solid material composed of carbon or some mixture thereof. It is designed to be fabricated into electrical contact brushes.
What is an Electrode Holder? 60 Items
An Electrode Holder (HOLDER,ELECTRODE) is excludes HOLDER, ELECTRODE, WELDING.
What is an Electrical Contact Brush Set? 1257 Items
An Electrical Contact Brush Set (BRUSH SET,ELECTRICAL CONTACT) is a combination of two or more brushes conforming to the item name BRUSH, ELECTRICAL CONTACT, used as a set in a specific piece of equipment. The individual brushes may be identical or nonidentical. For two or more brushes connected together by a common shunt, pressure bar, etc., see BRUSH, ELECTRICAL CONTACT. Excludes CONTACT ASSEMBLY, ELECTRICAL and CONTACT SET (as modified)
What is a Lighting Carbon Electrode? 33 Items
A Lighting Carbon Electrode (ELECTRODE,CARBON,LIGHTING) is an item, circular in cross section designed to act as a lighting media by sustaining an incandescent electric arc between it and a like item when their tips are in proper proximity to each other. See also ELECTRODE, FULGURATION.
What is an Electrical Contact Brush Arm? 144 Items
An Electrical Contact Brush Arm (ARM,ELECTRICAL CONTACT BRUSH) is an item designed to transmit pressure to a BRUSH, ELECTRICAL CONTACT for the purpose of maintaining contact between the brush and another conducting surface for the transfer of electrical energy. The item may include one or more pressure springs or tension springs.
What is an Electrical Contact Brush Holder Insert? 36 Items
An Electrical Contact Brush Holder Insert (INSERT,ELECTRICAL CONTACT BRUSH HOLDER) is an item designed to fit into a HOLDER, ELECTRICAL CONTACT BRUSH to form an integral liner or seat for positioning or holding one or more BRUSH, ELECTRICAL CONTACT.
What is an Electrical Contact Brush Holder Ring? 248 Items
An Electrical Contact Brush Holder Ring (RING,ELECTRICAL CONTACT BRUSH HOLDER) is an item made of metallic or insulating material to form a rigid loop whose axial length does not exceed 25 percent of its outside dimensions. It performs the function of retaining and positioning one or more HOLDER, ELECTRICAL CONTACT BRUSH. The item does not include the brush holder(s).
PARTS KIT,BRUSH,ELECTRICAL CONTACT 25 Items
What is an Electrical Contact Ring Segment? 26 Items
An Electrical Contact Ring Segment (SEGMENT,RING,ELECTRICAL CONTACT) is an item which when coupled with additional like items forms a RING, ELECTRICAL CONTACT. Item is supplied in arc-like sections. Items is composed of nonconductive material and may provide insulation. Item is designed to have BUS, CONDUCTOR, and the like mounted or molded to it.
What is a Current Collector? 86 Items
A Current Collector is an item which, via sliding contacts, continually transfers electrical energy from contact wires to electrically driven machines such as trains, cranes, lamps, tools, and the like.
What is a Shaft Grounding Assembly? 28 Items
A Shaft Grounding Assembly (GROUNDING ASSEMBLY,SHAFT) is a group of items designed to be used in cathodic protection systems.
PARTS KIT,ELECTRICAL CONTACT BRUSH HOLDER 31 Items
What is a Semiconductor Device Rectifier? 3625 Items
A Semiconductor Device Rectifier (RECTIFIER,SEMICONDUCTOR DEVICE) is two or more interconnected SEMICONDUCTOR DEVICE (1), DIODE arranged in stack(s) for use in power supplies to change alternating current to direct current. For items containing material such as selenium or copper oxide, see RECTIFIER, METALLIC.
What is a Photo Semiconductor Device? 1231 Items
A Photo Semiconductor Device (SEMICONDUCTOR DEVICE,PHOTO) is a Semiconductor Device (1) which is responsive to visible or infrared radiant energy. May or may not include mounting hardware and/or heat sink. Excludes SEMICONDUCTOR DEVICE (1), DIODE; SEMICONDUCTOR DEVICE (1), THYRISTOR AND TRANSISTOR. For solid state devices which emit visible or infrared radiant energy, see LIGHT EMITTING DIODE.
What is a Transistor? 32146 Items
A Transistor is an active semiconductor device with three or more electrodes. May or may not include mounting hardware and/or heatsink. Excludes SEMICONDUCTOR DEVICE, DIODE and SEMICONDUCTOR DEVICE, THYRISTOR. For solid state devices which are responsive to visible or infrared radiant energy, see SEMICONDUCTOR DEVICE, PHOTO.
What is a Diode Semiconductor Device? 41518 Items
A Diode Semiconductor Device (SEMICONDUCTOR DEVICE,DIODE) is a two electrode semiconductor device having an asymmetrical voltage - current characteristic. May or may not include mounting hardware and/or heatsink. Excludes LIGHT EMITTING DIODE and SEMICONDUCTOR DEVICE,PHOTO. For items containing material such as selenium and copper oxide, see RECIFIER, METALLIC.
What is a Semiconductor Device Set? 1617 Items
A Semiconductor Device Set is a grouping of two or more individual semiconductor devices, such as transistors, diodes, and photo semiconductor devices. It includes matched pairs. Excludes ABSORBER, OVERVOLTAGE; SEMICONDUCTOR DEVICE ASSEMBLY. For interconnected items functioning as power supply rectifiers, see RECTIFIER, SEMICONDUCTOR DEVICE.
What is a Semiconductor Device Holder? 394 Items
A Semiconductor Device Holder (HOLDER,SEMICONDUCTOR DEVICE) is an item designed to mechanically and electrically accommodate and position a SEMICONDUCTOR DEVICE (as modified), installed in a coaxial line or waveguide system for use as a nonlinear circuit element microwave application. Excludes ADAPTER (as modified) and RETAINER, SEMICONDUCTOR DEVICE.
What is a Thyristor Semiconductor Device? 3257 Items
A Thyristor Semiconductor Device (SEMICONDUCTOR DEVICE,THYRISTOR) is a bistable semiconductor device comprising three or more junctions which is normally a nonconductor until the application of a signal to a gate terminal, at which time the device switches to the conductive state. Includes devices capable of being switched back to the nonconductive state upon application of a different signal to the same or another gate terminal. May or may not include mounting hardware and/or heatsink. For solid state devices which are responsive to visible or infrared radiant energy, see SEMICONDUCTOR DEVICE, PHOTO.
What is a Semiconductor Device Assembly? 2574 Items
A Semiconductor Device Assembly is a grouping of two or more semiconducting devices such as LIGHT EMITTING DIODE; SEMICONDUCTOR DEVICE, DIODE; SEMICONDUCTOR DEVICE, PHOTO; SEMICONDUCTOR DEVICE, THYRISTOR; and/or TRANSISTOR mounted on a common mounting or mounted on each other. The devices must be separable and each item must be capable of functioning in accordance with its given name. For assemblies consisting of semiconducting devices permanently cased, encapsulated, or potted together to form a single unit, see RECTIFIER, SEMICONDUCTOR DEVICE, UNITIZED and SEMICONDUCTOR DEVICES, UNITIZED. Excludes SEMICONDUCTOR DEVICE SET; MICROCIRCUIT ASSEMBLY; and MICROCIRCUIT SET. See also ABSORBER, OVERVOLTAGE.
What is a Semiconductor Device Cover? 71 Items
A Semiconductor Device Cover (COVER,SEMICONDUCTOR DEVICE) is a cover specifically designed to protect a semiconductor device.
What is a Semiconductor Device Retainer? 583 Items
A Semiconductor Device Retainer (RETAINER,SEMICONDUCTOR DEVICE) is an item primarily designed to position and/or restrain the movement of one or more semiconductor devices in their normal operating position. Excludes CLIP (1), ELECTRICAL; CLAMP (1), LOOP; HOLDER, SEMICONDUCTOR DEVICE; HOLDER (1), CRYSTAL UNIT; RETAINER, CRYSTAL HOLDER; and STRAP, RETAINING. See also HEAT SINK, ELECTRICAL-ELECTRONIC COMPONENT and SOCKET, PLUG-IN ELECTRONIC COMPONENTS.
What is an Unitized Semiconductor Devices? 3269 Items
An Unitized Semiconductor Devices (SEMICONDUCTOR DEVICES,UNITIZED) is two or more discrete semiconductor devices such as diode(s) and/or transistor(s), permanently cased, encapsulated, or potted together to form an inseparable unit. Excludes devices having one or more components other than semiconductor devices. The individually distinct devices forming the unit may be internally connected. The unit in itself does not perform a complete specific function and cannot be assigned a more definite item name. It may include or consist of inseparable matched pairs. May or may not include mounting hardware and/or heatsink. For interconnected items arranged in stack(s), see RECTIFIER, SEMICONDUCTOR DEVICE. For items formed on or within a semiconductor material substrate, formed on an insulating substrate or formed on a combination of both of these types, see MICROCIRCUIT (as modified). Excludes NETWORK (as modified); ABSORBER, OVERVOLTAGE; SEMICONDUCTOR DEVICE SET; and SEMICONDUCTOR DEVICE ASSEMBLY. Do not use if more specific name applies.
What is an Unitized Semiconductor Device Rectifier? 2538 Items
An Unitized Semiconductor Device Rectifier (RECTIFIER,SEMICONDUCTOR DEVICE,UNITIZED) is two or more diode semiconductor devices designed to function as a unit in changing alternating current to direct current. The diode devices are internally connected in series, and are permanently cased, encapsulated, potted, or molded together to form an inseparable unit. These units may be designed as either half-wave or full-wave rectifiers and may be mounted to form either single phase or three phase bridges. For interconnected items arranged in stack(s), see RECTIFIER, SEMICONDUCTOR DEVICE. For items fabricated in the form of a monolithic or thin film structure that perform the function of a circuit, see INTEGRATED CIRCUIT (as modified). Excludes SEMICONDUCTOR DEVICES, UNITIZED; SEMICONDUCTOR DEVICE ASSEMBLY; and RECTIFIER NETWORK, UNITIZED.
What is an Electronic Equipment Installation Kit? 24 Items
An Electronic Equipment Installation Kit (INSTALLATION KIT,ELECTRONIC EQUIPMENT) is items to include brackets, cables, and miscellaneous hardware used to provide a rapid installation and/or removal of electronic equipment, communication equipment and the like. For items consisting solely of assorted hand tools, see TOOL KIT (as modified). For items consisting solely of common and/or specially designed hardware specifically designed to secure electronic equipment, see HARDWARE KIT,ELECTRONIC EQUIPMENT.
What is an Electronic Components Assembly? 32507 Items
An Electronic Components Assembly is a grouping of two or more different types of electrical/electronic components mounted on a common mounting. It may include an assembly of electrical/electronic components mounted on multiple PRINTED WIRING BOARD(S) mounted back to back, stacked, and the like. The item is generally a component of a subassembly and cannot be assigned a more definite item name. Excludes items which may be identified as a subassembly. For an assembly of electrical/electronic components mounted on a single PRINTED WIRING BOARD, see CIRCUIT CARD ASSEEMBLY. Do not use if a more specific name applies.
What is an Electrical Patchboard? 746 Items
An Electrical Patchboard (PATCHBOARD,ELECTRICAL) is a single, flat surfaced item in which are incorporated jacks, clips, sockets, and the like, and which provides a point for convenient interconnections by use of patch cords with plugs, or other means of connecting between electrical circuits which may be used for programming, toubleshooting, and testing. Do not use if a more applicable item name exists. Excludes PANEL, PATCHING, ANTENNA; PANEL, PATCHING, COMMUNICATION; and SWITCHBOARD, PATCHING, COMMUNICATION. See also PANEL, PATCHING, PROGRAMMING.
What is a Printed Circuit Board Holder? 2566 Items
A Printed Circuit Board Holder (HOLDER,PRINTED CIRCUIT BOARD) is a holder designed to accommodate and position one or more printed circuit boards. It is usually an open frame structure with printed circuit board guides mounted between parallel support bars and end supports. It is designed to be mounted in electrical cabinets, cases, drawers and racks to provide mounting facilities for printed circuit boards. See also CABINET, ELECTRICAL EQUIPMENT; CASE (as modified); DRAWER, ELECTRICAL EQUIPMENT; and RACK, ELECTRICAL EQUIPMENT.
What is an Electrical Card Extractor? 2305 Items
An Electrical Card Extractor (EXTRACTOR,ELECTRICAL CARD) is a device specifically designed to remove CIRCUIT CARD ASSEMBLY; or PRINTED CIRCUIT BOARD from their installed position.
What is an Electrical Card Holder? 4537 Items
An Electrical Card Holder (HOLDER,ELECTRICAL CARD) is a device specifically designed to retain CIRCUIT CARD ASSEMBLY or PRINTED CIRCUIT BOARD in their installed position. Excludes, RETAINER-EJECTOR, ELECTRICAL CARD; and HOLDER, PRINTED CIRCUIT BOARD.
What is an Electrical Card Retainer-Ejector? 1141 Items
An Electrical Card Retainer-Ejector (RETAINER-EJECTOR,ELECTRICAL CARD) is a device having the dual function of providing restraint for, and facilitating the removal of CIRCUIT CARD ASSEMBLY; or PRINTED CIRCUIT BOARD. Excludes HOLDER, ELECTRICAL CARD.
What is an Electrical Card Holder Support? 495 Items
An Electrical Card Holder Support (SUPPORT,ELECTRICAL CARD HOLDER) is an item designed specifically for holding and positioning the HOLDER, ELECTRICAL CARD.
What is a Backplane Assembly? 5229 Items
A Backplane Assembly is an insulating panel upon which two or more CONNECTOR, RECEPTACLE, ELECTRICAL, are mounted, and completely processed electrical conductor paths are deposited, etched, or printed in various paths. It provides or completes a circuit between two or more CIRCUIT CARD ASSEMBLY or ELECTRONIC COMPONENTS ASSEMBLY. It may be designed for panel or chassis mounting, or for insertion into a CONNECTOR, RECEPTACLE, ELECTRICAL. Includes motherboards. For items containing processed electrical conductor paths and contacts for plug-in connecting facilities, see PRINTED WIRING BOARD. See also PRINTED CIRCUIT BOARD; CIRCUIT CARD ASSEMBLY and CABLE ASSEMBLY, PRINTED, FLEXIBLE.
What is a Printed Wiring Board Sheet? 180 Items
A Printed Wiring Board Sheet (SHEET,PRINTED WIRING BOARD) is an electrically insulated item designed primarily to be used for the fabrication of a PRINTED WIRING BOARD or PRINTED CIRCUIT BOARD for electrical and electronic circuits. It may or may not be laminated or copper clad. For items with metal cladding the electrical conductor paths must be capable of being deposited, etched, or printed in various patterns. Excludes items having printed electronic components, such as capacitors, resistors, and the like. For items processed with electrical conductive paths deposited, etched, or printed in various patterns, see PRINTED WIRING BOARD.
What is an Electrical Card Stiffener? 373 Items
An Electrical Card Stiffener (STIFFENER,ELECTRICAL CARD) is a rigid item mounted to a CIRCUIT CARD ASSEMBLY, PRINTED WIRING BOARD or like items. It is composed of various materials, has assorted dimensions, and is used to strengthen and/or reduce flexing of the card or board.
What is a Circuit Card Set? 236 Items
A Circuit Card Set is a group of two or more circuit cards such as controller board, expander card and the like, not physically connected to each other. The item(s) may be used to expand memory, extend application, enhance the design or the like of a piece of equipment. For items designed to modify equipment, see also MODIFICATION KIT (as modified). For items physically connected together, see CIRCUIT CARD ASSEMBLY.
What is a Printed Circuit Board? 15269 Items
A Printed Circuit Board is a PRINTED WIRING BOARD having only printed electronic components, such as capacitors, resistors, and the like. For items having a complete individual electrical/electronic function, use applicable item name, such as AMPLIFIER (as modified); POWER SUPPLY; or the like. For items not having a complete individual electrical/electronic function, see applicable "SUBASSEMBLY" name, such as AMPLIFIER SUBASSEMBLY; POWER SUPPLY SUBASSEMBLY; or the like. For items having separately manufactured components (other than plug-in connecting facilities) and not having a more specific item name, see CIRCUIT CARD ASSEMBLY.
What is a Circuit Card Assembly? 370178 Items
A Circuit Card Assembly is a grouping of two or more physically connected or related electrical an/or electronic parts capable of dissassemblage. Each component of the assemblage must be capable of functioning in accordance with its own item name. Consists of a single PRINTED CIRCUIT BOARD or TERMINAL BOARD upon which are mounted separately manufactured electronic components such as capacitors, inductors, resistors, and the like. It may also include printed electronic components. The item is generally part of a subassembly and cannot be assigned a more definite item name. For items having a complete individual electrical/electronic function, use applicable item name such as AMPLIFIER (as modified); POWER SUPPLY; or the like. For items not having a complete individual electrical/electronic function, see applicable subassembly name, such as AMPLIFIER SUBASSEMBLY; POWER SUPPLY SUBASSEMBLY; or the like. For an assembly of electrical/electronic components mounted on other than a single PRINTED WIRING BOARD, see ELECTRONIC COMPONENTS ASSEMBLY. Excludes PRINTED CIRCUIT BOAR
What is a Printed Wiring Board? 13325 Items
A Printed Wiring Board is an insulating panel upon which completely processed electrical conductor paths are deposited, etched, or printed in various patterns to provide or complete a circuit between two or more points. It may provide contacts for plug-in connecting facilities. It may be designed for panel or chassis mounting, or for insertion into a CONNECTOR, RECEPTACLE, ELECTRICAL. For items containing printed electronic components, see PRINTED CIRCUIT BOARD. For items containing separately manufactured electronic components, see CIRCUIT CARD ASSEMBLY. For items consisting only of electrical conductor paths and two or more connectors, see BACKPLANE ASSEMBLY.
What is an Electronic Test Extender Card? 5630 Items
An Electronic Test Extender Card (EXTENDER CARD,ELECTRONIC TEST) is an item consisting of a hand wired or printed wiring board, with or without a retaining plate, rails, brackets, or electrical connector(s) which is designed to provide access to a circuit card assembly or electronic components assembly for testing, test point checking and troubleshooting.
What is an Input-Output Interface Unit? 295 Items
An Input-Output Interface Unit (INTERFACE UNIT,INPUT-OUTPUT) is an input or output modular device, electric and/or electronic which allows to link or connect actuators, sensors, or the like. It is generally associated with other modular systems such as power supplies or interface networks. It is managed by a master controller by bus or communication networks and a specific software. It is mounted on a Rail Guide and intergrated in a global automation system.
What is an Electrical-Electronic Equipment Management Unit? 15 Items
An Electrical-Electronic Equipment Management Unit (MANAGEMENT UNIT,ELECTRICAL-ELECTRONIC EQUIPMENT) is an electronic unit in shape of a card, plate or other, designed to manage the operation of electrical and/or electronic equipment by logical and/or analogic information. It can control the different subassemblies and/or components of electrical and /or electronic systems. It can provide electrical distribution, processors, actuators, circuit breakers, etc. It can have various communication interfaces and be plug-in or rack mounted in a chassis, rack and the like.
What is an Electrical-Electronic Equipment Control-Monitoringunit? 28 Items
An Electrical-Electronic Equipment Control-Monitoringunit (CONTROL-MONITORINGUNIT,ELECTRICAL-ELECTRONIC EQUIPMENT) is an electronic unit designed to control and/or monitor in local or in a remote an electrical and/or electronic equipment. It may have various communication interfaces and be plug-in or rack mounted on a chasis, rack and the like.
What is a Cartridge Fuse? 23087 Items
A Cartridge Fuse (FUSE,CARTRIDGE) is a fuse in which the element is inclosed in a cylindrical body. The element may be renewable. The terminals may be of varying types. It may contain a visual indication that the fusible element is severed, and may also provide an audible alarm through auxiliary circuitry. For noncylindrical items, see FUSE, INCLOSED LINK.
What is an Enclosed Link Fuse? 3172 Items
An Enclosed Link Fuse (FUSE,ENCLOSED LINK) is a fuse in which the element is inclosed in a body of other than cylindrical shape. It may include visual indication that the fusible element is severed. For cylindrical items, see FUSE, CARTRIDGE. Excludes FUSE, OPEN LINK; and FUSE LINK, ELECTRICAL.
What is an Indicator Alarm Fuse? 199 Items
An Indicator Alarm Fuse (FUSE,INDICATOR ALARM) is a fuse in which the element may or may not be enclosed. It is specifically designed to close an auxiliary circuit. When the fuse element is broken, it may provide a visual signal.
What is a Telephone Protector Block? 100 Items
A Telephone Protector Block (BLOCK,TELEPHONE PROTECTOR) is an item designed to be used with other similar items in an electrical circuit to form an open-space cut-out for protection against high potentials, such as lightning and/or abnormal electric currents. It is a maintenance part for a PROTECTOR, TELEPHONE.
What is a Fuse Panel? 658 Items
A Fuse Panel (PANEL,FUSE) is an item which consists of a panel with fuseholders mounted thereon and with terminal facilities. It is usually designed for power distribution service. May include fuses.
What is a Dummy Fuse? 80 Items
A Dummy Fuse is an item designed to occupy the space of a fuse without having the electrical characteristics of a fuse.
What is an Electrical Surge Arrester? 2242 Items
An Electrical Surge Arrester (ARRESTER,ELECTRICAL SURGE) is a circuit-protecting device which provides a discharge path for abnormal surges of high potential while consuming little or no power at normal operating voltage. Excludes items which absorb continuously recurring cyclic pulses. For resistors which are sensitive to voltage changes or used as elements in surge arresters, see RESISTOR, VOLTAGE SENSITIVE. See also ABSORBER, OVERVOLTAGE; AND CUTOUT DISK, PROTECTIVE.
What is a Lightning Arrester? 1184 Items
A Lightning Arrester (ARRESTER,LIGHTNING) is a protective device to provide a discharge path for lightning between line and line, and/or line and ground. See also PROTECTOR, TELEPHONE.
What is a Telephone Protector? 218 Items
A Telephone Protector (PROTECTOR,TELEPHONE) is an item specifically designed to protect the phone circuits against high potentials, such as lightning and/or abnormal electrical currents. It may include an inclosure, but does not always include the protective components such as protector blocks, heat coils, and/or fuses. Excludes items which may be used in other than telephone circuits. See also ARRESTER, LIGHTNING and FUSEHOLDER.
What is a Plug Fuse? 334 Items
A Plug Fuse (FUSE,PLUG) is a fuse which mounts by means of a screw base.
COVER,ARRESTER PLATE 13 Items
What is a Fuse Cover? 478 Items
A Fuse Cover (COVER,FUSE) is an item designed to fully or partially enclose a fuse to prevent contact with foreign obstructions.
What is a Lightning Rod? 220 Items
A Lightning Rod is a rod or rod assembly specifically designed to be mounted vertically on the highest point of a structure and connected to ground in such a way that it can carry a lightning discharge to ground. May include accessories such as clamps and cables.
What is a Corona Ball? 53 Items
A Corona Ball is a globular or spherical shaped electrically conductive body used to prevent corona discharge.
What is a Corona Shield? 81 Items
A Corona Shield (SHIELD,CORONA) is an item designed to be positioned about a point of high potential for the purpose of redistributing electrostatic lines of force.
What is an Electrostatic Discharger? 258 Items
An Electrostatic Discharger (DISCHARGER,ELECTROSTATIC) is a discharger specifically designed to reduce or remove the electrostatic charge on an item. It may be digital and may incorporate a self-checking function. See also GUN, STATIC, ELIMINATING; MATT, ELECTROSTATIC DISCHARGING; STRAP, WRIST, ELECTROSTATIC DISCHARGING; DISCHARGER, ELECTROSTATIC, AIRCRAFT.
What is a Telephone Protector Disk? 31 Items
A Telephone Protector Disk (DISK,TELEPHONE PROTECTOR) is a circular plate which is a maintenance item for a telephone protector.
HOLDER,PROTECTOR BLOCK 242 Items
What is a Blown Fuse Indicator? 54 Items
A Blown Fuse Indicator (INDICATOR,BLOWN FUSE) is an item which is specifically designed to be attached to a fuse, fuse clip, or fuseholder, and to give visual indication when the fuse is blown. It does not include the fuse. See also LAMP, GLOW and ALARM, BLOWN FUSE.
What is an Electrical Fuse Link? 997 Items
An Electrical Fuse Link (FUSE LINK,ELECTRICAL) is an item which forms the replaceable fusible element of an electrical fuse and is prefabricated to a specific size and rating. It may be inclosed. See also FUSE, INCLOSED LINK and FUSE, OPEN LINK.
What is a Primary Expulsion Fuse Cutout? 336 Items
A Primary Expulsion Fuse Cutout (FUSE CUTOUT,PRIMARY EXPULSION) is a device designed to protect heavy duty electrical power and lighting primary circuits and equipment against excessive electrical currents by automatically de-energizing the affected section of the circuit. Consists of a fusible element and a mechanism for quick disconnect of circuit when fuse is blown. May be designed for automatic re-energizing after a predetermined time delay.
What is a Fuse Adapter? 222 Items
A Fuse Adapter (ADAPTER,FUSE) is an item constructed to establish the necessary accommodations to connect a fuse to a fuseholder whose design or function will not normally warrant their connection and/or to limit the current rating of the fuse to be used in conjunction with the fuseholder.
What is a Fuse Retainer? 91 Items
A Fuse Retainer (RETAINER,FUSE) is an item designed to be placed over the clips of a FUSEHOLDER (as modified) to prevent the fuse(s) mounted therein from being thrown from the clips under conditions of severe vibration or shock. Excludes CLAMP, ELECTRICAL; CLIP, ELECTRICAL; FUSEHOLDER (as modified); and SHELL, FUSE.
What is a Fuse Shell? 380 Items
A Fuse Shell (SHELL,FUSE) is the inclosing case which houses the fusible element of a renewable electrical fuse. Exludes FUSEHOLDER (as modified) and RETAINER, FUSE.
What is a Fuse Box? 1305 Items
A Fuse Box is an enclosure which includes, mounts, and protects one or more FUSEHOLDER. It is designed for and may include a cover. May also include electrical fuses, mounting hardware, lock(s), conduit fittings, and terminal board(s) used specifically for terminating the fuses or fuseholders. For boxes containing combinations of different electrical devices, such as switches, jacks, fuseholders, connectors, circuit breakers, terminal boards, and the like, see DISTRIBUTION BOX. For boxes designed to mount but which do not include fuseholders, see JUNCTION BOX. Excludes CHAMBER, CABLE TERMINAL; FUSEHOLDER; and TERMINAL BOX.
What is an Open Link Fuse? 309 Items
An Open Link Fuse (FUSE,OPEN LINK) is a fuse in which the element is not inclosed. It does not contain an alarm indication of the element being severed. See also FUSE LINK, ELECTRICAL and FUSE, INCLOSED LINK.
What is a Thermal Fuse Link? 256 Items
A Thermal Fuse Link (FUSE LINK,THERMAL) is a replaceable, protective, current carrying element for heaters, heat ducts, and like items. It is designed with fusible material which will melt at known ambient temperatures and disconnect the item from its power source. See also LINK, FUSIBLE, FIRE.
What is an Overvoltage Absorber? 1384 Items
An Overvoltage Absorber (ABSORBER,OVERVOLTAGE) is an item specifically designed to absorb and consume surges of voltage such as that resulting across contacts when breaking a circuit having an inductive load or a burst of static across a telephone receiver. It is connected in parallel with the item it is protecting. It may be made up of metallic rectifier cells or semiconductor devices connected back-to-back which may or may not be shunted by a capacitor. It may also be a single rectifier cell or semiconductor device shunted by a capacitor. Excludes metallic rectifiers which are rated for rectifying capabilities and all single unit semiconductor devices not shunted by a capacitor. For items perfoming this function by use of voltage sensitive resistors, see RESISTOR, VOLTAGE SENSITIVE. See also CUTOUT DISK, PROTECTIVE.
What is an Electrostatic Discharger Holder? 45 Items
An Electrostatic Discharger Holder (HOLDER,ELECTROSTATIC DISCHARGER) is a holder for a DISCHARGER, ELECTROSTATIC.
What is a Block Fuseholder? 3030 Items
A Block Fuseholder (FUSEHOLDER,BLOCK) is a fuseholder in which the fuseholder stud and/or clips and insulation are mounted on a flat base. Excludes FUSEHOLDER, RECEPTACLE.
What is an Extractor Post Fuseholder? 2113 Items
An Extractor Post Fuseholder (FUSEHOLDER,EXTRACTOR POST) is a fuseholder in which the clips or contacts for electrical connection to the fuse are mounted in a tubular body or similar inclosure which surrounds the fuse. It generally contains a removable cap or knob. It includes in-the-line type and those designated as miniature type FUSEHOLDER (as modified).
What is a Receptacle Fuseholder? 626 Items
A Receptacle Fuseholder (FUSEHOLDER,RECEPTACLE) is a fuseholder which is specifically designed to accommodate one or more FUSE, PLUG. Excludes FUSEHOLDER, BLOCK.
What is an Electrostatic Control Work Station Kit? 63 Items
An Electrostatic Control Work Station Kit (WORK STATION KIT,ELECTROSTATIC CONTROL) is a grouping of static dissipative items, such as rigid or soft table and/or floor mats, grounding kit ionizing blower, wrist strap with a current limiting resistor and the like. The portable or permenant clean and/or nonclean room configeration to protect static sensitive electronic components and devices from damage caused by electrostatic discharge from personnel.
What is an Electrostatic Discharging Mat? 223 Items
An Electrostatic Discharging Mat (MAT,ELECTROSTATIC DISCHARGING) is an item designed to be placed under equipment, components, or personnel to form a floor, desk, table, work bench, or the like covering, to dissipate static electricity charges. It will have a means to be connected to the equipment or person from which the static electricity charge is dissipated. For floor coverings used for other than electrostatic discharging, see MAT, FLOOR. See also DISCHARGER, ELECTROSTATIC.
What is an Electrostatic Discharge Wrist Strap? 208 Items
An Electrostatic Discharge Wrist Strap (STRAP,WRIST,ELECTROSTATIC DISCHARGE) is an item designed to be worn around the wrist to dissipate static electricity from a person's body and prevent damage to the components or equipment being handled. It has provisions for connection to the equipment, grounding mat, work bench, or the like. It may or may not include the LEAD, ELECTRICAL.
What is a Fuseholder Cap? 167 Items
A Fuseholder Cap (CAP,FUSEHOLDER) is an item designed to mechanically and electrically accommodate and position a FUSE (1), CARTRIDGE installed in a FUSEHOLDER (1), EXTRACTOR POST. Excludes FUSEHOLDER SUBASSEMBLY.
What is a Fuse Assortment? 540 Items
A Fuse Assortment is two or more of the same or different types of FUSE (as modified) of different characteristics grouped together in a single package.
What is an Aircraft Electrostatic Discharger? 67 Items
An Aircraft Electrostatic Discharger (DISCHARGER,ELECTROSTATIC,AIRCRAFT) is an item specifically designed to reduce or remove the build up of static electricity on a fixed or rotating winged aircraft. Excludes DISCHARGER, ELECTROSTATIC (INC 01905).
What is an Electrical Surge Arrester Assembly? 119 Items
An Electrical Surge Arrester Assembly (ARRESTER ASSEMBLY,ELECTRICAL SURGE) is two or more ARRESTER, ELECTRICAL SURGE having a common mounting or mounted on each other. It may or may not include terminals, binding posts or the like, for establishing electrical connection.
What is an Inrush Current Limiter? 71 Items
An Inrush Current Limiter (LIMITER,INRUSH CURRENT) is an item designed to limit the inrush current in electric circuits that are under inductive and/or capacitive loads. It limits the current input during the transient to an authorized level and may include passive and active components such as relays, resistors, diodes and solid-state circuits.
What is an Overload Protector? 61 Items
An Overload Protector (PROTECTOR,OVERLOAD) is a resistive component with a temperature coefficient which keeps a positive value. It is designed to provide an overload protection to an electric/electronic circuit. In case of an overload it reduces the current flow to a small residual value which switches the circuit off as the internal conductive paths of the component are interrupted by means of heat. The process is reversible so that the original condition is restored after cooling or interruption of the current flow. Exludes RESISTOR, THERMAL.
What is a Protective Cutout Disk? 30 Items
A Protective Cutout Disk (CUTOUT DISK,PROTECTIVE) is an item specifically designed to be used with lamps in series circuits to provide circuit continuity when a lamp fails.
What is a Series Circuit Protector? 82 Items
A Series Circuit Protector (PROTECTOR,SERIES CIRCUIT) is an item specifically designed to be used in series transformer circuits for prevention of open circuit run-away voltages.
What is a Fuseholder Subassembly? 460 Items
A Fuseholder Subassembly is the components of a fuseholder which together form the carrier to hold a fuse in position to provide electrical contact, but which in itself is not a complete functioning item and cannot be assigned a more definite item name.
What is a Knife Switch? 249 Items
A Knife Switch (SWITCH,KNIFE) is a switch using hinged blades for contacts which enter or embrace fixed contact clips. Includes switches which have a movable blade which swivels to permit contact with each of several fixed contact clips. See also SWITCH, BOX.
What is a Hook Switch? 37 Items
A Hook Switch (SWITCH,HOOK) is a switch in which the integral external actuator is hook shaped or lipped so that the hanging of an object on the actuator will operate the switch. Excludes sensitive switch with adapters.
What is a Mercury Switch? 202 Items
A Mercury Switch (SWITCH,MERCURY) is a switch in which a mercury pool is used to bridge fixed contacts when their inclosing sealed capsule is tilted. Do not use if switch has an actuator, such as lever, push button, toggle, and the like. See SWITCH (as modified). For items in which a contact may be moved into a mercury pool by a magnetic field, see SWITCH, REED.
What is a Centrifugal Switch? 240 Items
A Centrifugal Switch (SWITCH,CENTRIFUGAL) is a switch which is actuated by centrifugal force.
What is a Foot Switch? 668 Items
A Foot Switch (SWITCH,FOOT) is a switch with a pedal which is actuated by the foot. For items not provided with a pedal, see switch (as modified). Excludes SWITCH, BEAM SELECTING, HEADLIGHT.
What is a Lever Switch? 3609 Items
A Lever Switch (SWITCH,LEVER) is a switch which is externally actuated by a lever and whose contacts open and close at a speed proportional to the speed at which the lever is operated. Includes pile-up lever switches and wafer lever switches. Excludes SWITCH, TOGGLE; SWITCH, ROTARY; SWITCH, KNIFE; SWITCH, SENSITIVE; SWITCH, BOX; and SWITCH, MERCURY.
What is a Toggle Switch? 22833 Items
A Toggle Switch (SWITCH,TOGGLE) is a switch which is externally actuated by a lever and whose contacts open and close with an instantaneous (snap) action; includes items having one or more momentary positions. Includes switches (snap action) which use mercury to bridge contacts, and assemblages of complete switches (snap action) having common actuators. Excludes SWITCH, LEVER; SWITCH, ROTARY; SWITCH, KNIFE; SWITCH, SENSITIVE; and SWITCH, BOX.
What is a Pressure Switch? 17642 Items
A Pressure Switch (SWITCH,PRESSURE) is a switch which is actuated by changes in pressure of any gas or liquid or by changes in a vacuum acting upon its sensing element. Excludes BAROSWITCH; SWITCH, PRESSURE-THERMOSTATIC; and SWITCH, SENSITIVE.
What is a Sensitive Switch? 14027 Items
A Sensitive Switch (SWITCH,SENSITIVE) is a switch with a quick-acting mechanism actuated by a highly delicate tactile contact. Includes membrane switch. Excludes SWITCH, FLEXIBLE; SWITCH, PRESSURE; and SWITCH, THERMOSTATIC.
What is a Slide Switch? 1538 Items
A Slide Switch (SWITCH,SLIDE) is a switch designed to be actuated by the sliding of a button, bar, or knob.
What is a Lock Switch? 1901 Items
A Lock Switch (SWITCH,LOCK) is a switch which is externally actuated by a key designed to be inserted into a switch, or actuated by a predetermined combination dial setting(s). Excludes SWITCH, LOCK, IGNITION.
What is an Interlock Switch? 876 Items
An Interlock Switch (SWITCH,INTERLOCK) is an item which completes or interrupts the connections in one or more electrical circuits. Its electrical elements consist of separate parts designed to be mounted respectively on a frame and a door, drawer, or cover, It acts as a safety device to open a circuit when the door or drawer is opened or the cover removed. It does not include devices of which a complete switch with an actuator is one of the parts; for such devices, use SWITCH (as modified). Excludes SWITCH, MERCURY; and SWITCH, REED.
What is a Pull Switch? 286 Items
A Pull Switch (SWITCH,PULL) is a switch which is actuated by a device, such as a pull rod or a chain which requires pulling for each action. Excludes LIGHT-SWITCH ASSEMBLY and SWITCH, SENSITIVE.
What is a Push Switch? 49395 Items
A Push Switch (SWITCH,PUSH) is a switch that is externally actuated by a device such as a push rod or button, which requires pushing for each actuation. The action may be momentary, with mechanical return. The actuating device may or may not be an integral part of the switch. The item may include provisions for mounting indicating lamp(s) or light emitting diode(s) in the actuator. Includes items consisting of individually separable switches that are physically interlocked, that have a common actuator, or are electrically connected. Excludes LIGHT-SWITCH; LIGHT-SWITCH ASSEMBLY; SWITCH, BEAM SELECTING, HEADLIGHT; SWITCH, FOOT; SWITCH, INTERLOCK; SWITCH, PRESSURE; SWITCH, PUSH-PULL; SWITCH, SENSITIVE and SWITCH ASSEMBLY. For devices which start, stop, reverse, select and/or regulate the speed of a motor, see STARTER, MOTOR and CONTROLLER, MOTOR.
What is a Push-Pull Switch? 1219 Items
A Push-Pull Switch (SWITCH,PUSH-PULL) is a switch which is actuated in one direction by pushing and in the opposite direction by pulling. Excludes LIGHT-SWITCH ASSEMBLY.
What is a Trigger Switch? 252 Items
A Trigger Switch (SWITCH,TRIGGER) is a switch which is actuated by pulling a trigger. The switching device with trigger action may be a separate unit but is usually mounted or designed to be mounted in a pistol-grip handle. It may include provisions for locking the switch in the "ON" position. Excludes GRIP ASSEMBLY, CONTROLLER, AIRCRAFT.
What is a Thermostatic Switch? 19387 Items
A Thermostatic Switch (SWITCH,THERMOSTATIC) is a switch that is actuated by changes in ambient temperature. Excludes CIRCUIT BREAKER; CONTROL, TEMPERATURE (as modified); FUSE (as modified); PROTECTOR, THERMAL-OVERLOAD, ELECTRICAL MOTOR; RELAY, THERMAL; and THERMOSTAT, FLOW CONTROL. See also CONTROL, TEMPERATURE (as modified) and REGULATOR, TEMPERATURE (as modified).
What is a Switch Drive Subassembly? 356 Items
A Switch Drive Subassembly is two or more different types of items having a common mounting or mounted on each other which together form a portion of a switch drive but which in itself is not a complete functioning item and cannot be assigned a more definite item name.
What is a Switch Subassembly? 4612 Items
A Switch Subassembly is two or more different types of items having a common mounting or mounted on each other which together forms a portion of a switch but which in itself is not a complete functioning item and cannot be assigned a more definite item name. See also SWITCH SECTION, ROTARY and CONTACT ASSEMBLY, ELECTRICAL.
What is an Electrical Switch Cover? 1476 Items
An Electrical Switch Cover (COVER,ELECTRICAL SWITCH) is excludes BOOT, DUST AND MOISTURE SEAL; COVER, SWITCH TERMINAL; GUARD, SWITCH; and PLATE, WALL, ELECTRICAL.
What is a Switch Assembly? 9723 Items
A Switch Assembly is two or more complete switches mounted on each other or having a common mounting the major function of which is to hold the switches. Each switch, as a separable item, must be capable of functioning in accordance with its own name. Excludes items consisting of individually separable switches which are physically interlocked (e.g., one button returns when the other is pushed), which have a common actuator, or are electrically connected. See also SWITCH, PUSH.
What is an Electrical Switch Rotor? 262 Items
An Electrical Switch Rotor (ROTOR,ELECTRICAL SWITCH) is an item designed as the rotating part of an electrical switch.
What is an Electrical Switch Stop? 226 Items
An Electrical Switch Stop (STOP,ELECTRICAL SWITCH) is an item designed to restrict the movement of an electrical switch actuator, Excludes DETENT, SWITCH; and LATCH, SWITCH.
What is an Interlock Control? 180 Items
An Interlock Control (CONTROL,INTERLOCK) is a device that determines the mode of operation of an interlock system.
What is an Inertia Switch? 113 Items
An Inertia Switch (SWITCH,INERTIA) is a switch which is specifically designed to be actuated by an abrupt change in velocity of the item upon which it is mounted.
What is a Switch Latch? 188 Items
A Switch Latch (LATCH,SWITCH) is an item which is an auxiliary part of a switch and designed to hold the switch in a position into which it has manually or mechanically been thrown. See also DETENT, SWITCH; and STOP, ELECTRICAL SWITCH.
What is a Switch Detent? 283 Items
A Switch Detent (DETENT,SWITCH) is a mechanism which is a part of or may be added to a switch to establish predeternimed switching positions. See also STOP, ELECTRICAL SWITCH and LATCH, SWITCH.
What is a Rotary Switch? 56893 Items
A Rotary Switch (SWITCH,ROTARY) is a switch actuated by a definite angular rotation of the switch shaft about its axis. For items having rated actuation travel and pressure characteristics, see SWITCH, SENSITIVE. Excludes RELAY, ROTARY; SWITCH, STEPPING; and SWITCH, TELEPHONE (as modified).
What is an Electrical Switch Actuator Bar? 290 Items
An Electrical Switch Actuator Bar (BAR,ACTUATOR,ELECTRICAL SWITCH) is an item which is long in proportion to its other dimensions and is used as an electrical switch actuator.
What is a Switch Guard? 2682 Items
A Switch Guard (GUARD,SWITCH) is a framework fabricated of rigid material designed to protect a switch against external damage and/or prevent inadvertent throwing of the switch. Excludes switch locking devices.
What is an Electrical Switch Roller? 70 Items
An Electrical Switch Roller (ROLLER,ELECTRICAL SWITCH) is a machined pin, rod or cylinder which is used in the mechanism of an electrical switch to reduce friction and wear.
What is an Electrical Switch Yoke? 46 Items
An Electrical Switch Yoke (YOKE,ELECTRICAL SWITCH) is an item designed to join together two electrical switches or parts of a switch so as to cause the joined items to function as a unit.
What is a Box Switch? 1419 Items
A Box Switch (SWITCH,BOX) is a switch designed with its actuator extending from the box which incloses the circuit elements. The door or cover of the box is designed so that it may be readily opened or removed, thus providing relatively easy access to the circuit elements. The item is commonly designated as a safety switch or entrance switch. May be fusible and may have interlocking device.
What is a Tilt Switch? 240 Items
A Tilt Switch (SWITCH,TILT) is a switch which is actuated upon angular displacement from a predetermined plane. Does not include SWITCH, SENSITIVE and SWITCH, MERCURY.
What is a Switch Actuator Adapter? 1685 Items
A Switch Actuator Adapter (ADAPTER,SWITCH ACTUATOR) is an adapter designed to be mounted on a switch so that the switch may be opened or closed by an action of force not adapted to directly actuate the integral switching mechanism. Does not include knobs. See also EXTENSION, SHAFT.
What is a Rotary Switch Control? 493 Items
A Rotary Switch Control (CONTROL,ROTARY SWITCH) is an item which determines the mode of operation of an integral rotary switch. It is controlled manually or by a CONTROL, REMOTE SWITCHING.
What is a Pressure-Thermostatic Switch? 303 Items
A Pressure-Thermostatic Switch (SWITCH,PRESSURE-THERMOSTATIC) is a switch which is actuated by changes of pressure (vacuum) on any gas or liquid and by changes in ambient temperature. The contacts for the temperature and pressure sensitive elements may be common.
What is a Rotary Switch Section? 2162 Items
A Rotary Switch Section (SWITCH SECTION,ROTARY) is an item consisting of electrical contacts mounted on an insulated plate which together form a section of a switch or relay. It includes both rotor and stator but does not include drive or actuating mechanism.
What is a Switch Handle? 940 Items
A Switch Handle (HANDLE,SWITCH) is the detachable portion of an actuator. It is usually attached at an angle to the pivoted axis of the actuator. May include a radial lever as an integral or detachable part. Excludes KNOB; and HANDWHEEL.
What is a Sensitive Switch Housing? 251 Items
A Sensitive Switch Housing (HOUSING,SENSITIVE SWITCH) is an item designed to inclose a basic sensitive switch providing characteristics features such as dust-proof, explosion-proof, watertight, and the like, and having provisions for actuating the switch. Excludes BOX, SWITCH.
What is a Switch Box? 2008 Items
A Switch Box is an enclosure which includes, mounts, and protects one or more electrical switches. It is designed to have a cover which completely encloses the switch(es) and its (their) actuator(s). The cover may or may not be included. May also include mounting hardware, lock(s), conduit fittings, and terminal board(s) used specifically for terminating the switch(es). For boxes containing combinations of different electrical devices, such as switches, jacks, fuseholders, connectors, circuit breakers, terminal boards, and the like, see DISTRIBUTION BOX. For boxes designed to mount but which do not include switches, see JUNCTION BOX. Excludes CONTROL (2) (as modified); PANEL, POWER DISTRIBUTION; SWITCH, BOX; and SWITCH ASSEMBLY.
What is a Water Switch? 44 Items
A Water Switch is an item consisting of two electrodes which pass current when immersed in salt water. It may have an electrical connection cable.
What is a Dust And Moisture Seal Boot? 1542 Items
A Dust And Moisture Seal Boot (BOOT,DUST AND MOISTURE SEAL) is a flexible, nonmetallic item designed to prevent entry of dust, moisture and other contaminants into critical areas around shafts, levers, electrical wires and hoses. Sealing may be either static or dynamic. The item may include mounting hardware (support plates, clamps and the like). Excludes BELLOWS, PROTECTION; GROMMET, NONMETALLIC; and CABLE NIPPLE, ELECTRICAL. See also CAP, ELECTRICAL; CAP, PROTECTIVE, DUST AND MOISTURE SEAL; and SHIELD, ELECTRICAL CONNECTOR.
What is a Nonluminous Switch Actuator Cover? 103 Items
A Nonluminous Switch Actuator Cover (COVER,SWITCH ACTUATOR,NONLUMINOUS) is a clip designed to fit on the end of a "bat" or "ball" type actuator of a switch or switch type circuit breaker. Its function is to cover luminous ends to prevent radiation, and/or to mark or identify when certain switches or circuits should not be used. For similar items having fluorescent or radioactive type inserts, use MARKER, SELF-LUMINOUS.
What is a Pressure Switch Diaphragm? 249 Items
A Pressure Switch Diaphragm (DIAPHRAGM,PRESSURE SWITCH) is a maintenance item for a SWITCH, PRESSURE. It converts pressure into motion for opening or closing the switch contacts.
What is a Stepping Switch? 411 Items
A Stepping Switch (SWITCH,STEPPING) is an electromagnetically actuated switch having contact wipers which are successively rotated over fixed bank contacts. The contact wipers are progressively advanced over the fixed bank contacts through a repetitive series of stepping operations. The stepping operation may be a continuous forward rotation acting through 360 degrees to return to its normal unoperated position or it may be designed to include an electromagnetic and/or mechanical means for releasing and resetting the switch to its released position for a subsequent operation. The contact wipers may be mechanically held in contact with the fixed bank contacts after the armature of the actuating coil has released. The switch may be released at the end of its travel or at any intermediate position. It includes items designed with two electromagnetic actuators that enable the switch to operate in either direction. For items having the dual function of a switch and a relay assembled together on a common mounting, see RELAY-SWITCH. For other than electromagnetically actuated switches whose contact wipers are manually rotated over fixed bank contacts, see SWITCH, ROTARY. Excludes RELAY, ROTARY and SWITCH, TELEPHONE (as modified).
What is a Reed Switch? 688 Items
A Reed Switch (SWITCH,REED) is an item actuated by an external magnetic field and having two or more contacts inclosed in a sealed capsule. Do not use if switch has an actuator, such as a lever, push button, toggle, and the like. See SWITCH (as modified). For items provided with an operating coil, use RELAY (as modified). It includes items in which a contact may be moved into a mercury pool by a magnetic field.
What is a Proximity Switch? 2702 Items
A Proximity Switch (SWITCH,PROXIMITY) is a switch designed to perform the function of opening and/or closing one or more electrical circuits. The switching function is accomplished by means of separable contacts, semiconductor devices, or a combination of separable contacts and semiconductor devices. The item functions in response to electrical changes in its internal circuit caused by capacitance, inductance, or magnetic flux changes. It is activated by permanent magnets, metallic materials, or nonmetallic materials which come within its sensing range. For sensing switches which respond to changes other than capacitance, inductance, or magnetic flux, see SWITCH, AIRFLOW; SWITCH, CENTRIFUGAL; SWITCH, INERTIA; SWITCH, PRESSURE; SWITCH, PRESSURE-THERMOSTATIC; SWITCH, THERMOSTATIC; and SWITCH, TILT.
What is a Flexible Switch? 142 Items
A Flexible Switch (SWITCH,FLEXIBLE) is a switch that is externally actuated by the application of pressure at any point along its operating surface which encloses parallel electrical conductors. It may have one or more sets of parallel conductors. Excludes SWITCH, PUSH and SWITCH, SENSITIVE.
What is a Flow Switch? 2391 Items
A Flow Switch (SWITCH,FLOW) is a switch which is specifically designed to operate by the influence of a gaseous, liquid, or solid media velocity on its actuator.
What is a Liquid Level Switch? 1692 Items
A Liquid Level Switch (SWITCH,LIQUID LEVEL) is a switch which is actuated by a float or sensing device(s) to control liquid level and/or actuate visual or audible warning systems. It may include a relay controlled by the switch element. Excludes TRANSMITTER,LIQUID QUANTITY.
What is an Electrical Switch Retainer? 2576 Items
An Electrical Switch Retainer (RETAINER,ELECTRICAL SWITCH) is an item designed to position and/or restrain the movement of one or more switches in their normal operating positions.
What is a Solid State Switch? 401 Items
A Solid State Switch (SWITCH,SOLID STATE) is a switch designed to perform the function of opening and/or closing of one or more electrical circuits. In lieu of separable contacts, the switching function is accomplished by means of an arrangement of semiconductors and passive circuit devices. The item functions in response to electrical changes in its own internal circuit caused by the approach of permanent magnets, metals, capacitance or inductance. The form of the item and kind of actuation (push, toggle and rotary action) may be identical to that of switches having separable contacts.
What is a Switch Shield? 89 Items
A Switch Shield (SHIELD,SWITCH) is an item specifically designed to be placed around or over one or more SWITCH (as modified) in order to prevent or reduce electrical and/or mechanical interference.
What is an Electronic Switch? 2548 Items
An Electronic Switch (SWITCH,ELECTRONIC) is an electronic device which provides for the transfer of the electrical signal input from one component to another, or between two or more components. It may also provide a continuous sequence of switching or sampling of a number of circuits. See also GATE, ELECTRONIC.
What is a Programming Switch? 39 Items
A Programming Switch (SWITCH,PROGRAMMING) is an item with a motor-driven program switch which, contrary to pulse-actuated stepping mechanisms, is permanently driven. Program mechanisms are required in applications where the program flow must be free from control pulses. For pulse-driven switching mechanisms designed for stepping operations see SWITCH, STEPPING.
What is a Push Button Set? 124 Items
A Push Button Set is a group of two or more push buttons (the detachable portion of a switch, circuit breaker, controller or the like). They may be any shape or design and may include detachable tops, marked with letter(s), numeral(s), or other characters. Excludes KNOB, HANDLE, AND KEYTOP, KEYBOARD.
What is a Dummy Switch? 18 Items
A Dummy Switch is an item occupying the space of an electrical switch, without having its functions.
What is a Switch Actuator Arm? 1192 Items
A Switch Actuator Arm (ARM,SWITCH ACTUATOR) is an arm designed to be mounted on a switch mechanism shaft.
What is a Switch Key? 823 Items
A Switch Key (KEY,SWITCH) is a device intended for insertion into the actuator of a switch to lock the switch in either an on or off position.
What is a Push Button? 14567 Items
A Push Button is an item which constitutes the detachable portion of a switch, circuit breaker, controller, motor starter actuator or items equipped with a key type station selector device etc, upon which the pushing pressure is applied to operate the item. It may be of any shape or design and may include a detachable top, marked with letter(s), numeral(s), or other characters, and/or a plunger or rod as an integral or detachable part. Excludes KNOB; HANDLE, SWITCH; BAR ACTUATOR, ELECTRICAL SWITCH and KEYTOP, KEYBOARD.
What is a Code Indicating Wheel Switch? 2534 Items
A Code Indicating Wheel Switch (SWITCH,CODE INDICATING WHEEL) is a switch which is externally actuated by a thumbwheel and/or pushbutton. A legend or message is visually displayed at each position of the indicating wheel which corresponds to electrically coded output. Electrically coded output is achieved by rotating a set of brush contacts permanently attached to the code indicating wheel, against a stationary commutator which is usually a printed wiring board having electrical pads or contacts which are interconnected by the rotating brush contacts. May have additional electrical components (such as resistors, capacitors, diodes) premounted on that portion of printed wiring board which extends beyond the back of switch housing.
What is a Voltage Regulator? 721 Items
A Voltage Regulator (REGULATOR,VOLTAGE) is a component within a single inclosure or provided with a single mounting specifically designed to control automatically the voltage output of an electrical system within certain required limits, regardless of variations of the effective load or of input voltages within a specific range. Does not include items in which regulation is accomplished solely by transformer action. See also REGULATOR SET, VOLTAGE. Excludes REGULATOR, ENGINE GENERATOR.
What is an Electronic Frequency Converter? 236 Items
An Electronic Frequency Converter (CONVERTER,FREQUENCY,ELECTRONIC) is an electronic device having frequency mixing circuits and an integral oscillator which mixes the incoming frequency(ies) with the oscillator frequency, the resultant frequency(ies) being a combination of the two sources. Includes equipment that performs these functions at either radio or power line frequencies. Excludes items that change frequency by means of rotating equipment or rectifier and switching or keying circuitry.
What is a Static Frequency Converter? 22 Items
A Static Frequency Converter (CONVERTER,FREQUENCY,STATIC) is an item utilizing electron tubes, transistors, and/or semiconductor devices forming rectifier and electronic keying or switching circuitry, that is inserted between a load designed to operate at one frequency and a power supply line rated at another frequency. For items performing the same function by heterodyne action at either radio or power line frequencies, see CONVERTER, FREQUENCY, ELECTRONIC. For items that perform this function by means of rotary equipment, see MOTOR-GENERATOR. See also DIVIDER-MULTIPLIER, FREQUENCY; FREQUENCY DIVIDER; FREQUENCY MULTIPLIER and MIXER STAGE, FREQUENCY.
What is a Frequency Divider? 30 Items
A Frequency Divider is an electronic device for delivering an output wave whose frequency is a proper fraction (sub-multiple) of the input frequency. It may also provide incidental signal amplification.
What is a Pulse Delay Oscillator? 74 Items
A Pulse Delay Oscillator (OSCILLATOR,PULSE DELAY) is an electronic device which generates alternating current power at a frequency(ies) determined by the values of certain constants in its circuits. It is characterized by a network in the input and/or output circuits which causes a delay in transmission of a trigger pulse of predetermined width for a definite time interval. See also DELAY LINE.
What is a Keyer? 224 Items
A Keyer is an item which by electrical, electronic, and/or mechanical means automatically opens and closes a control circuit or circuits of another item in a predetermined manner. Excludes KEYER, FREQUENCY SHIFT; and MODULATOR, RADIO TRANSMITTER.
What is a Demultiplexer Subassembly? 14 Items
A Demultiplexer Subassembly is two or more different types of items having a common mounting or mounted on each other which together form a portion of a demultiplexer, but which in themselves are not a complete functioning item and cannot be assigned a more definite item name.
What is a Current Regulator? 134 Items
A Current Regulator (REGULATOR,CURRENT) is a regulator that automatically controls the current output of an electric system within a specific range regardless of the variation of the effective load or input current values. Does not include items in which regulation is accomplished solely by transformer action. See also TRANSFORMER, POWER (as modified). Excludes REGULATOR, ENGINE GENERATOR.
What is a Radio Frequency Detector? 91 Items
A Radio Frequency Detector (DETECTOR,RADIO FREQUENCY) is an electronic device which demodulates radio frequency energy and may also provide a direct current control potential.
What is a Video Signal Detector? 19 Items
A Video Signal Detector (DETECTOR,VIDEO SIGNAL) is an electronic device which demodulates video signals. It is used with equipment in which electrical impulses are converted into visual presentations on the screen of a cathode ray tube.
What is a Demultiplexer? 12 Items
A Demultiplexer is an item designed to decombine two or more simultaneous intelligence signals for recovering the intelligence received from a single signal transmission facility, the intelligence having been previously combined by a compatible multiplexer. See also MULTIPLEXER.
What is an Oscillator Subassembly? 497 Items
An Oscillator Subassembly is two or more different types of items, having a common mounting or mounted on each other, which together form a portion of an oscillator but which in itself is not a complete functioning item and cannot be assigned a more definite item name.
What is an Electronic Chopper? 360 Items
An Electronic Chopper (CHOPPER,ELECTRONIC) is an electromechanical or electronic (includes solid state semiconductor items) device designed to convert an electrical signal into a modified square wave output signal. For items excited by an alternating current, the output signal is the same frequency as, and bears a definite phase relationship to, the excitation voltage. For those electronic items designed to operate on direct current only, the output frequency of the item is dependent upon the inherent properties of the item, or the internal or external circuit constants, or the applied driving coil voltage impressed on the input signal. For an electromechanical item whose coil is designed for direct current only, see VIBRATOR, INTERRUPTER and VIBRATOR, SELF-RECTIFYING.
What is a Crystal Controlled Oscillator? 7317 Items
A Crystal Controlled Oscillator (OSCILLATOR,CRYSTAL CONTROLLED) is an oscillator whose operating frequency(ies) is controlled by a CRYSTAL UNIT, QUARTZ. For an oscillator controlled by a device other than a crystal, see OSCILLATOR (1), NONCRYSTAL CONTROLLED. See also GENERATOR, SIGNAL; and CALIBRATOR, FREQUENCY. Excludes FREQUENCY SUPPLY, TELEPHONE CARRIER; RESONATOR, TUNING FORK; and OSCILLATOR, PULSE DELAY.
What is a Noncrystal Controlled Oscillator? 2332 Items
A Noncrystal Controlled Oscillator (OSCILLATOR,NONCRYSTAL CONTROLLED) is an oscillator whose operating frequency(ies) is controlled by an electronic device other than a CRYSTAL UNIT, QUARTZ. For an oscillator controlled by a crystal, see OSCILLATOR (1), CRYSTAL CONTROLLED. See also GENERATOR, SIGNAL; and CALIBRATOR, FREQUENCY. Excludes FREQUENCY SUPPLY, TELEPHONE CARRIER; RESONATOR, TUNING FORK; and OSCILLATOR, PULSE DELAY.
What is a Standardized Electronic Module? 7807 Items
A Standardized Electronic Module (ELECTRONIC MODULE,STANDARDIZED) is an electronic device capable of controlling voltage and/or current to produce gain, oscillation or similar integral functions. It consists of a collection of electronic parts such as capacitors, resistors, coils, relays, transistors, semiconductor devices, and microcircuits in a single replaceable package. The configuration, physical dimensions, and electrical parameters of the item have been standardized in accordance with Government and/or Industry specifications and/or standards. Excludes items with nonstandardized configuration. It is not subject to disassembly as distinguished from such items as CIRCUIT CARD ASSEMBLY and ELECTRONIC COMPONENTS ASSEMBLY. Do not use if a more specific item name exists such as AMPLIFIER (as modified), CODER (as modified), MICROCIRCUIT (as modified), and OSCILLATOR (as modified).
What is an Actuation Control Set? 21 Items
An Actuation Control Set (CONTROL SET,ACTUATION) is a control system electronics unit (CSEU) which provides electrical interface for certain power arm and monitor functions, and electronics battery which supplies electrical power. It controls two batteries which supply power to four electromechanical actuators, integrated guidance unit (IGU) which send fin position commands from the integrated guidance unit to the control system electronics unit.
What is a Frequency Divider Module? 31 Items
A Frequency Divider Module is an electronic device for delivering an output wave whose frequency is a proper fraction (sub-multiple) of the input frequency. It may also provide incidental signal amplification. The configuration, physical dimensions, and electrical parameters of the item have been standardized in accordance with government and/or industry specifications and/or standards.
What is an Inductive Proximity Detector? 161 Items
An Inductive Proximity Detector (DETECTOR,PROXIMITY,INDUCTIVE) is a device which uses an oscillator generated alternating magnetic field to detect the presence and/or position of foreign objects within a limited field of view. The item's field of view is very small when compared to security type motion detectors. See also; TRANSDUCER, MOTIONAL PICKUP (6695); and MOTION DETECTOR (6350).
What is a Static Frequency Converter Subassembly? 10 Items
A Static Frequency Converter Subassembly (CONVERTER SUBASSEMBLY,FREQUENCY,STATIC) is two or more different types of items having a common mounting or mounted on each other, which together form a portion of a CONVERTER,FREQUENCY,STATIC but which in itself is not a complete functioning item. Not to be used if a more specific item name exists.
What is an Interrupter Contact Set? 64 Items
An Interrupter Contact Set (CONTACT SET,INTERRUPTER) is a grouping of two or more separate interrupter contacts. Excludes CONTACT ASSEMBLY, ELECTRICAL.
What is a Permanent Magnet? 1102 Items
A Permanent Magnet (MAGNET,PERMANENT) is an object of various materials, that retains a magnetic field for an indefinite period of time after the magnetizing force has been removed. Excludes ELECTROMAGNET; magnetized hand tools; and compass needles.
What is an Indicator Adapter? 101 Items
An Indicator Adapter (ADAPTER,INDICATOR) is an adapter which permits a remote indicator to be connected to an electronic set with which it was not normally intended to be used. Do not use if a more specific name exists. See also COUPLER (as modified).
What is an Electrical Contact? 32770 Items
An Electrical Contact (CONTACT,ELECTRICAL) is an item consisting of an electrically conductive material designed to furnish a surface which will physically and electrically meet another conducting surface for the purpose of transferring electrical energy and/or opening and closing circuits. Includes moving contacts which make and/or slide over stationary contacts or other stationary conductive material to a resulting fixed position. Excludes items which are used in conjunction with continually moving surfaces or which make contact by gripping action of the contact surfaces. See also CLIP, ELECTRICAL; CLAMP, ELECTRICAL; BRUSH, ELECTRICAL CONTACT; PLUG, TIP; and JACK, TIP.
What is a Relay-Switch? 1579 Items
A Relay-Switch is an item having the dual function of a RELAY (as modified) and a SWITCH (as modified) assembled together on a common mounting or in a single inclosure. Contacts may be common to both relay and switch. For relay operated switches, see RELAY (as modified). Excludes CIRCUIT BREAKER and relays with protruding shafts.
What is an Electrical Equipment Harness? 647 Items
An Electrical Equipment Harness (HARNESS,ELECTRICAL EQUIPMENT) is an item consisting of adjustable straps, specifically designed for positioning and supporting electrical equipment. Excludes HARNESS, CATHODE RAY TUBE; HARNESS, CHEST SET; HARNESS, MICROPHONE; and WIRING HARNESS.
COVER,RELAY-SWITCH 103 Items
What is an Electrical Clip? 3332 Items
An Electrical Clip (CLIP,ELECTRICAL) is a clip designed to electrically connect items and components. Its primary function is to make a quick and/or temporary electrical connection. Includes alligator and crocodile test clips, battery clips, contact clips, electron tube clips, resistor clips, or the like. For electron tube grid and plate cap clips with wire leads attached, see LEAD, ELECTRICAL. Excludes CLAMP, ELECTRICAL; CLIP, SPRING TENSION; and FUSEHOLDER (as modified).
What is an Electrical Clamp? 1233 Items
An Electrical Clamp (CLAMP,ELECTRICAL) is a clamp specifically designed to carry electric current. See also CLIP, ELECTRICAL; SPLICE, CONDUCTOR; TERMINAL, LUG; and RETAINER (as modified). Excludes BRACKET, PIPE.
What is a Magnetostriction Resonator? 126 Items
A Magnetostriction Resonator (RESONATOR,MAGNETOSTRICTION) is a frequency control device, the operation of which is based on the magnetic and mechanical resonant properties of a ferromagnetic material, which has applications in oscillators and filters as a substitute for quartz crystals.
What is a Magnet Keeper? 59 Items
A Magnet Keeper (KEEPER,MAGNET) is an item of low reluctance material placed between the poles of a magnet to retain the magnetic lines of force.
What is a Magnetostriction Element? 18 Items
A Magnetostriction Element is an item of metallic material which changes in dimensions when placed in a magnetic field or which varies a magnetic field when pressure is applied. Excludes COIL (1) (as modified).
What is an Electrical Shield Plate? 1843 Items
An Electrical Shield Plate (PLATE,ELECTRICAL SHIELD) is a metallic or metallic coated item which is rigid or semirigid, flat, and generally smooth. Its thickness is small in comparison to both its length and width, and is designed to prevent or reduce stray electro-magnetic and/or electrostatic fields between components or items. It may be used as a mechanical guard. Excludes PLATE (as otherwise modified); SHIELD (as modified); and SPACER, PLATE.
What is a Magnet Pole Piece? 152 Items
A Magnet Pole Piece (POLE PIECE,MAGNET) is a piece of magnetic material forming one end of a magnet which is so shaped as to control the magnetic flux in the adjacent medium.
HOLDER,CONTACT 480 Items
What is an Electrical Contact Assembly? 6210 Items
An Electrical Contact Assembly (CONTACT ASSEMBLY,ELECTRICAL) is two or more CONTACT, ELECTRICAL on a common mounting or mounted on each other. Excludes BRUSH SET, ELECTRICAL CONTACT; CONTACT SET (as modified); and INSERT, ELECTRICAL CONNECTOR.
What is a Delay Line? 3505 Items
A Delay Line is an item which provides a predetermined delay to an electrical pulse, while maintaining substantially the same waveform. The delay is obtained by means of a real or artificial transmission line or equivalent device. The equivalent device may be acoustic, distributive, lumped constant, magnetic solid state, or surface acoustical wave type. See also ATTENUATOR, (as modified); TRANSFORMER, (as modified); and OSCILLATOR, PULSE DELAY.
What is a Light-Switch? 570 Items
A Light-Switch is an electrical device consisting of a Switch (1) and a light, not intended for illumination but present for the purpose of indication, on a common mounting, separable and capable of functioning individually; or one light and one switch fabricated as a common inseparable body incapable of functioning individually. It may include wall plate or box cover and it may be complete with a box. Excludes push, pull, push-pull, and toggle switches with a lamp mounted integrally in the actuator.
What is a Connector-Switch? 842 Items
A Connector-Switch is an electrical device consisting of one connector and one switch on a common mounting, seperable and capable of functioning individually or one connector and one switch fabricated as a common inseperable body, incapable of functioning individually. May include wall plate or box cover and may be complete with a box.
What is a Dummy Connector-Switch? 23 Items
A Dummy Connector-Switch is an electrical device consisting of one dummy connector and one switch on a common mounting, separable and capable of functioning individually or one dummy connector and one switch fabricated as a common inseparable body, incapable of functioning individually. May include wall plate or box cover and may be complete with box.
What is an Electrical Shield Retainer? 266 Items
An Electrical Shield Retainer (RETAINER,ELECTRICAL SHIELD) is an item specifically designed to position and restrain the movement of an electrical shield in relation to another item. Retainer must not be an integral part of the shield.
What is an Electrical Cap? 3819 Items
An Electrical Cap (CAP,ELECTRICAL) is a cap for use with electronic or electrical items. Excludes BOOT, DUST AND MOISTURE SEAL; CAP, IGNITION DISTRIBUTION; and COVER, ELECTRICAL CONNECTOR.
What is a Light-Switch Assembly? 548 Items
A Light-Switch Assembly is an electrical device consisting of a Switch (1) and two or more lights, or two or more switches and two or more lights, mounted on a common mounting. The lights are not intended for illumination but are present for the purpose of indication. Each item may be separable and capable of functioning individually, or the items may be fabricated into a common inseparable body, incapable of functioning individually. It may include wall plate or box cover and it may be complete with box. Excludes push, pull, push-pull, and toggle switches with a lamp mounted integrally in the actuator.
What is an Electronic Equipment Parts Kit? 1877 Items
An Electronic Equipment Parts Kit (PARTS KIT,ELECTRONIC EQUIPMENT) is do not use if a more specific item name is applicable.
What is an Electronic Shielding Gasket? 16390 Items
An Electronic Shielding Gasket (SHIELDING GASKET,ELECTRONIC) is a shaped metallic item designed to increase the effectiveness of radio frequency/electromagnetic interference, or a nonmetallic item containing a wire mesh, metal, or other electrically conductive particles designed to provide environmental sealing and radio frequency/electromagnetic interference shielding. For bulk items see WIRE MESH, KNITTED or GASKETING MATERIAL, CONDUCTIVE.
What is a Knitted Wire Mesh? 730 Items
A Knitted Wire Mesh (WIRE MESH,KNITTED) is a resilient knitted mesh consisting of a multiplicity of interlacing wire loops. It is manufactured in various cross-sectional shapes and may include fins. It includes items designed for mechanical and/or electronic use. Item may contain a resilient core or be impregnated with a resilient compound, such as rubber or plastic to provide for weather sealing. For items made by weaving and/or welding wires to form meshes, see WIRE FABRIC. For items shaped from this material, see SHIELDING GASKET, ELECTRONIC. Excludes BRAID, WIRE; WIRE CORD; and WEATHER STRIP.
What is a Connector-Switch Assembly? 343 Items
A Connector-Switch Assembly is a device consisting of two or more CONNECTOR, RECEPTACLE, ELECTRICAL and one or more SWITCH (as modified); or one or more CONNECTOR, RECEPTACLE and two or more SWITCH (as modified) mounted on a common mounting or upon each other. The connector(s) and switch(es) may be individually replaceable and capable of separate functions. May include one or more of the following: COVER, JUNCTION BOX; COVER, CONDUIT OUTLET; PLATE, WALL, ELECTRICAL; CONDUIT OUTLET; JUNCTION BOX and the like.
What is an Electronic Equipment Air Cooler? 1267 Items
An Electronic Equipment Air Cooler (COOLER,AIR,ELECTRONIC EQUIPMENT) is an item designed to circulate cool air for the purpose of maintaining electronic equipment at a rated operating temerature level. Excludes FAN (as modified) and COOLER, FLUID, ELECTRONIC EQUIPMENT.
What is a Delay Line Set? 69 Items
A Delay Line Set is a complete set utilizing delay lines and associated components to effect a predetermined time delay of a signal(s) for application to other components.
What is an Electrical Contact Kit? 385 Items
An Electrical Contact Kit (CONTACT KIT,ELECTRICAL) is a group of items consisting of all the necessary elements required to fabricate a CONTACT, ELECTRICAL.
What is a Conductive Gasketing Material? 1099 Items
A Conductive Gasketing Material (GASKETING MATERIAL,CONDUCTIVE) is a nonmetallic material manufactured in various cross-sectional shapes, impregnated with electrically conductive particles. It is designed to provide environmental sealing and electromagnetic interference shielding to electrical and electronic equipment. For items shaped from this material, see SHIELDING GASKET, ELECTRONIC. See also WIRE MESH, KNITTED.
What is a Fluid Filter Element? 24 Items
A Fluid Filter Element (FILTER ELEMENT,FLUID) is a replaceable device designed to remove solid particles from fluids ranging in density from heavy liquids to gases. The removal of particles is accomplished by porous material (metallic or non-metallic), stacked disks, wound wire, or the like, constructed so the fluid can flow through the device while the solid particles are retained. It may be designed to fit into a FILTER, FLUID (or similar cavity), or it may have an integral outer casing and mounting facilities and be designed to connect directly to an engine, compressor, or the like. The degree of removal of particles must be nominally rated at less than 50 microns or absolutely rated at less than 75 microns. Excludes FILTER ELEMENT, AIR CONDITIONING. See also STRAINER ELEMENT, SEDIMENT.
What is a Ventilating Radio Frequency-Electromagnetic Interference Shielded Panel? 806 Items
A Ventilating Radio Frequency-Electromagnetic Interference Shielded Panel (PANEL,RADIO FREQUENCY-ELECTROMAGNETIC INTERFERENCE SHIELDED,VENTILATING) is a replaceable device in panel form designed to eliminate radio frequency and electromagnetic interference from the air passing through it. The elimination of interference is accomplished by reflection and/or absorption of radiated electromagnetic energy by media constructed of electrically conductive material, in honeycomb or louvered form confined in a frame, with electrically conductive gasketing (or self-gasketing feature) to provide electrical contact with the cabinet on which it is installed or mounted. It may be used in air ventilating or heating ducts, lighting aperture and the like. It may have a filter for dust protection. It may include a drip-proof design feature. Excludes electrical filtering devices which employ capacitor, resistor and coil components to eliminate or suppress conducted electromagnetic energy. Excludes SHIELD,TEST.
What is an Electrical Semi-Conducting Tape? 15 Items
An Electrical Semi-Conducting Tape (TAPE,SEMI-CONDUCTING,ELECTRICAL) is a flexible item in roll form, six inches (152.4 mm) or less in width with a separator, designed to provide shielding continuation (elimination of Corona "noise") in electrical wire or cable splices/terminations. The item and/or the separator is printed with a legend identifying the item as semiconducting. Excludes: TAPE, ADHESIVE, RUBBER; TAPE, INSULATION, ELECTRICAL; TAPE, PRESSURE SENSITIVE ADHESIVE; and TAPE, SHIELDING, ELECTRICAL.
What is an Electrical Shielding Tape? 213 Items
An Electrical Shielding Tape (TAPE,SHIELDING,ELECTRICAL) is a flexible item in roll form, six inches (152.4mm) or less in width, designed to provide radio frequency/electromagnetic shielding for an electrical cable, splice, microcircuit or other electronic component. It may be constructed from braided/knitted wire, metal foil, metallized plastic, or the like. It does not have printed data, symbols, or legends. Excludes TAPE, ADHESIVE, RUBBER; TAPE, INSULATION, ELECTRICAL; TAPE, PRESSURE SENSITIVE ADHESIVE; and TAPE, SEMI-CONDUCTING, ELECTRICAL.
PARTS KIT,HEAT SINK 11 Items
What is an Electrical Dummy Contact? 134 Items
An Electrical Dummy Contact (DUMMY CONTACT,ELECTRICAL) is an item designed to occupy the space of an electrical contact without having the electrical characteristics of an electrical contact. Excludes items designed for insertion into an electrical connector. See also PLUG, END SEAL, ELECTRICAL CONNECTOR and POLARIZING KEY, ELECTRICAL CONNECTOR.
What is a Printed Wiring Component Contact Strip? 187 Items
A Printed Wiring Component Contact Strip (CONTACT STRIP,PRINTED WIRING COMPONENT) is an interconnecting device which provides high density electrical connection when pressure mounted between printed wiring components, miniature electronic components or between a printed wiring component and an electrical cable. The construction may consist of alternating layers of conductive and nonconductive material; parallel oriented wires imbedded in a nonconductive material or parallel oriented film conductors wrapped around a nonconductive core. For electrical connecting devices which contain contacts see ADAPTER (2), CONNECTOR; CONNECTOR, (as modified); DUMMY CONNECTOR, (as modified), and INSERT, ELECTRICAL CONNECTOR. Excludes CONTACT ASSEMBLY, ELECTRICAL; CONTACT, ELECTRICAL; CONTACT STRIP, RADIO FREQUENCY GROUNDING; and TERMINAL, (as modified).
What is a Data Entry Keyboard? 639 Items
A Data Entry Keyboard (KEYBOARD,DATA ENTRY) is a device for data input by key depression which causes the generation of the selected character, numeral or the like.
What is an Electrical Grounding Strip? 3463 Items
An Electrical Grounding Strip (STRIP,ELECTRICAL GROUNDING) is a rigid or semirigid item of electrically conductive material designed to provide a connection between the piece(s) of equipment and ground. Its primary purpose is to dissipate static charges. Excludes TERMINAL STRIP, GROUNDING; CONTACT STRIP, RADIO FREQUENCY GROUNDING; and PLATE, ELECTRICAL GROUNDING.
What is an Electronic Components Shield? 1395 Items
An Electronic Components Shield (SHIELD,ELECTRONIC COMPONENTS) is an item specifically designed to be placed around a group of components in order to prevent or reduce electromagnetic, electrostatic or radio frequency interference. It may be of various materials and of any shape except flat. For flat items, see PLATE, ELECTRICAL SHIELD. Excludes COVER (as modified), CAP (as modified, and shields designed for single components.
What is an Electrical Contact Assortment? 79 Items
An Electrical Contact Assortment (CONTACT ASSORTMENT,ELECTRICAL) is two or more of the same or different types of CONTACT, ELECTRICAL grouped together in a single package and intended for individual replacement and wide selectivity range. May include labels, inserts and case.
What is a Heat Sink-Insulator? 914 Items
A Heat Sink-Insulator is an item specifically designed to be thermally conductive and electrically insulating. For items designed to dissipate heat only, see HEAT SINK, ELECTRICAL-ELECTRONIC COMPONENT. For items designed to insulate only, see INSULATOR (1) (as modified).
CONTROL,MONITOR MODULE,ANTILOCK 23 Items
What is an Electrical-Electronic Components Oven? 350 Items
An Electrical-Electronic Components Oven (OVEN,ELECTRICAL-ELECTRONIC COMPONENTS) is an electrically heated compartment designed to accommodate and maintain at an essentially constant temperature, one or more components, such as, CRYSTAL UNIT(S), QUARTZ; tuned circuits; integrated circuit devices; and semiconductors. It prevents frequency drift and changes in teperature.
What is a Shorting Header? 138 Items
A Shorting Header (HEADER,SHORTING) is an item which may consist of insulating material upon which one or more terminal(s) is shorted to other terminal(s). The item may/may not be programmed by breaking the connection between terminals. It is designed primarily to act as a shunt between two or more points in an electrical circuit. It is not designed to mate with another connection. For items that mate with another electrical connector, see DUMMY CONNECTOR, PLUG.
What is an Arc Chute? 102 Items
An Arc Chute (CHUTE,ARC) is an item fabricated from electrically nonconductive material which is designed to be placed around one or more set(s) of electrical contacts to confine the current discharge and preventing it from jumping (arcing over) to a set of adjacent contacts. It may/may not include an electrically conductive device(s) to fragmentize and extingush the discharge in order to minimize contact pitting. It is a replacement part for a CIRCUIT BREAKER&#59; CONTACTOR, MAGNETIC&#59; RELAY (1), (as modified)&#59; SWITCH, (as modified) and/or similar items.
What is an Electronic Components Housing? 2445 Items
An Electronic Components Housing (HOUSING,ELECTRONIC COMPONENTS) is a housing specifically designed to surround or enclose, in addition to supporting and aligning electronic components classified in more than one class. It may provide mounting facilities for external and/or internal components and may be either single or miltiple piece construction.
What is an Electronic Component Package? 442 Items
An Electronic Component Package (COMPONENT PACKAGE,ELECTRONIC) is a device which is designed to enclose a microcircuit die, resistor, capacitor, microwave, monolithic device or a combination thereof, but does not contain the component(s). For items which contain the circuit element(s) see MICROCIRCUIT (as modified); RESISTOR (as modified); CAPACITOR (as modified); or the like. Do not use if a more applicable item name exists.
What is an Electronic Equipment Fluid Cooler? 338 Items
An Electronic Equipment Fluid Cooler (COOLER,FLUID,ELECTRONIC EQUIPMENT) is an item designed to circulate and cool a fluid for the purpose of maintaining the temperature of electronic components and/or equipment at a rated operating level.
What is an Electronic Equipment Accessory Kit? 654 Items
An Electronic Equipment Accessory Kit (ACCESSORY KIT,ELECTRONIC EQUIPMENT) is an accessory kit designed to be used in conjunction with electronic end items for the purpose of enhancing or evaluating the capability of the items operation. This kit is not used to repair an item, nor does it permanently modify an item. Excludes REPAIR KIT (1), (as modified; PARTS KIT (1), ELECTRONIC EQUIPMENT; MAINTENANCE KIT (1), ELECTRONIC EQUIPMENT; ACCESSORY KIT ELECTRICAL-ELECTRONIC TEST EQUIPMENT.
What is an Electronic Components Matched Set? 48 Items
An Electronic Components Matched Set (MATCHED SET,ELECTRONIC COMPONENTS) is a grouping of two or more different individual electronic devices, such as a diode and a resistor, transistor and capacitor, or the like. It includes components matched by specific electrical/mechanical characteristics. For a resistor and capacitor mounted on a common board that are inseperable, see CAPACITOR-RESISTOR.
What is an Electronic Equipment Duct Assembly? 103 Items
An Electronic Equipment Duct Assembly (DUCT ASSEMBLY,ELECTRONIC EQUIPMENT) is a hollow body feeding cool air to different parts of electronic equipment. Flanges, brackets, adapters, etc. for mounting purposes can be included.
What is a Shorting Strip? 283 Items
A Shorting Strip (STRIP,SHORTING) is an item specifically designed to facilitate the connection of two or more contacts or terminals within an electrical connector, on a terminal board, on a printed circuit board header or the like for the purpose of making them electrically common. Normally a solid item with holes to accommodate the contacts or terminals. Excludes DUMMY CONNECTOR, PLUG; DUMMY CONNECTOR, RECEPTACLE; LEAD, ELECTRICAL BUS, CONDUCTOR; and TERMINAL STRIP, GROUNDING. For items with studs or threaded holes to accommodate terminals or holes to accommodate wire for solder, or the like see TERMINAL BOARD. For items designed to carry heavy current see BUS, CONDUCTOR.
What is a Cable Assembly Termination Kit? 98 Items
A Cable Assembly Termination Kit (TERMINATION KIT,CABLE ASSEMBLY) is a collection of items used to seal and/or protect electrical conductors by using the cold shrink method.
What is an Electronics Components Set? 82 Items
An Electronics Components Set is a grouping of two or more different individual electronic devices, such as a diode and a resistor, transistor and capacitor or the like. It can include components matched or not matched by specific electrical/mechanical characteristics. For a resistor and capacitor mounted at a common board that are inseparable see CAPACITOR-RESISTOR. Excludes ELECTRONIC COMPONENTS ASSEMBLY.
What is an Electrical And Electronic Equipment Modification Kit? 261 Items
An Electrical And Electronic Equipment Modification Kit (MODIFICATION KIT,ELECTRICAL AND ELECTRONIC EQUIPMENT) is an item or collection of items employed to modify electrical and electronic equipment.
What is a Thermal Release Heater? 2259 Items
A Thermal Release Heater (HEATER,THERMAL RELEASE) is a resistive element which dissipates sufficient heat to melt the fusible material or distort the bimetallic element of an overload protective device when the temperature, as a result of an overload in an electrical circuit, reaches a predetermined value. Excludes COIL (as modified); RESISTANCE ELEMENT; RESISTOR,THERMAL; THERMAL RELEASE,CIRCUIT BREAKER; and items with integral bimetallic element, contacts, or fusible material.
What is a Thermal Release Heater Set? 80 Items
A Thermal Release Heater Set (HEATER SET,THERMAL RELEASE) is two or more unassembled HEATER,THERMAL RELEASE for use in specific equipment and packaged or grouped for issue as a single unit.
What is an Electrical-Electronic Component Heat Sink? 9455 Items
An Electrical-Electronic Component Heat Sink (HEAT SINK,ELECTRICAL-ELECTRONIC COMPONENT) is an item which is specifically designed to absorb, conduct or dissipate heat generated by an electrical and/or electronic component or an external source in order to prevent damage to the component. Do not use if a more specific name applies.
What is an Electrical-Electronic Component Mounting Pad? 6734 Items
An Electrical-Electronic Component Mounting Pad (MOUNTING PAD,ELECTRICAL-ELECTRONIC COMPONENT) is an item fabricated from electrically nonconductive material specifically designed to provide a support for mounting an electrical and/or an electronic component such as a semiconductor device, relay, or resistor into the next higher assembly. It isolates the component from the mounting surface of the next higher assembly, it may act as a strain relief to avoid damage to the component seal, and it may permit soldering of the component to the next higher assembly without damage. It includes holes, notches, or other provisions for physical alignment and spacing of electrical leads and/or other mounting facilities projecting from the component it mounts. It may also afford protection from shock or vibration. It may be either nonthermally conductive which protects the component from temperature changes in the next higher assembly or it may be thermally conductive which permits heat generated in the component to be drained out to a heat sink. For items whose function is electrical insulation only, see INSULATOR, (as modified). Excludes HOLDER, (as modified); RETAINER, (as modified), and SPACER, PLATE.
What is a Dummy Circuit Card Assembly? 66 Items
A Dummy Circuit Card Assembly is an item designed to occupy the space of a CIRCUIT CARD ASSEMBLY. It does not have electrical characteristics.
What is an Electronic Equipment Cooling Unit? 160 Items
An Electronic Equipment Cooling Unit (COOLING UNIT,ELECTRONIC EQUIPMENT) is a unit designed to generate and circulate cool air for the purpose of maintaining electronic equipment at a specific operating temperature. It includes a blower, power conditioner, air plenum, and power housing. It can include an elapsed time indicator to indicate the cumulative number of operating hours. The unit provides status and control via the power supply assembly. Excludes COOLER, AIR, ELECTRONIC EQUIPMENT; COOLER, FLUID, ELECTRONIC EQUIPMENT; and FAN (as modified).
What is an Electronic Equipment Coolant Fluid Reservoir? 17 Items
An Electronic Equipment Coolant Fluid Reservoir (RESERVOIR,COOLANT FLUID,ELECTRONIC EQUIPMENT) is a container which is part of a COOLER, FLUID, ELECTRONIC EQUIPMENT. It is designed to collect excess coolant fluid when the fluid expands due to temperature rise.
What is an Electrical-Electronic Equipment Control-Monitoringunit? 28 Items
An Electrical-Electronic Equipment Control-Monitoringunit (CONTROL-MONITORINGUNIT,ELECTRICAL-ELECTRONIC EQUIPMENT) is an electronic unit designed to control and/or monitor in local or in a remote an electrical and/or electronic equipment. It may have various communication interfaces and be plug-in or rack mounted on a chasis, rack and the like.
What is a Circuit Breaker Contact Set? 219 Items
A Circuit Breaker Contact Set (CONTACT SET,CIRCUIT BREAKER) is a grouping of two or more separate circuit breaker contacts. Excludes CONTACT ASSEMBLY, ELECTRICAL.
What is a Circuit Breaker? 42987 Items
A Circuit Breaker is a device with means other than fuses for automatically opening the circuit in which it is installed when the current varies from the predetermined value for which the device is set. May include provisions for manual operation. At least one set of contacts must be in series with the actuating element(s). A combination of semiconductor and passive devices may be used in lieu of contacts. For automatically operated items in which the actuating (tripping) element and contacts are not in series, see RELAY (as modified). For items which are operated both manually and automatically but the actuating elements and contact are not in series, see RELAY-SWITCH. Excludes CIRCUIT BREAKER BOX and magneto "breaker" assemblies. See also SWITCH (as modified); and CONTROLLER.
What is a Circuit Breaker Subassembly? 773 Items
A Circuit Breaker Subassembly is two or more different types of items, having a common mounting or mounted on each other, which together form a portion of a circuit breaker, but which in itself is not a complete functioning item and cannot be assigned a more definite item name. Excludes COIL, ELECTRICAL; THERMAL RELEASE, CIRCUIT BREAKER; and TRIPPER, CIRCUIT BREAKER.
COVER,CIRCUIT BREAKER 333 Items
What is a Circuit Breaker Armature? 22 Items
A Circuit Breaker Armature (ARMATURE,CIRCUIT BREAKER) is an item which is the pivoted or spring-mounted ferromagnetic portion of a circuit breaker, and which moves to break and/or make an electrical circuit in response to electromagnetic changes.
What is a Circuit Breaker Thermal Release? 213 Items
A Circuit Breaker Thermal Release (THERMAL RELEASE,CIRCUIT BREAKER) is an item containing fusible material which melts when the temperature reaches a predetermined value caused by an overload in an electrical circuit. The melting (fusion) of the material mechanically causes contacts to open and/or close. The item may include an integral heating element, such as a coil or resistor, but does not include contacts. Excludes COIL, CIRCUIT BREAKER; HEATER, THERMAL RELEASE; and TRIPPER, CIRCUIT BREAKER.
BASE,CIRCUIT BREAKER 268 Items
What is a Circuit Breaker Tripper? 1547 Items
A Circuit Breaker Tripper (TRIPPER,CIRCUIT BREAKER) is an electromechanical device which releases the holding mechanism and permits the contacts of a circuit breaker to open. It is a replacement part of a circuit breaker. Does not include relays. See also THERMAL RELEASE, CIRCUIT BREAKER.
What is a Circuit Breaker Box? 1071 Items
A Circuit Breaker Box is an enclosure which includes, mounts, and protects one or more circuit breakers. It is designed for and may include a cover and such accessories as mounting hardware, brackets, and conduit fittings. May include terminal boards and/or bus conductors used as a convenience for terminating the circuit breakers. May include handle tie bars. It is usually used as a load center for the protection of certain electrical devices such as water heaters, motors, etc., or as a service center for homes or offices. For boxes which include only switches, jacks, fuseholders, terminals and/or terminal boards or fuseholders, or any combination of these devices, see SWITCH BOX; JACK BOX; TERMINAL BOX; and DISTRIBUTION BOX. For boxes designed to mount and protect but do not include circuit breakers, see CIRCUIT BREAKER BOX SUBASSEMBLY. See also INTERCONNECTING CABINET; PANEL, POWER DISTRIBUTION; JUNCTION BOX; and CABINET, ELECTRICAL EQUIPMENT.
What is a Ground Fault Interrupter? 712 Items
A Ground Fault Interrupter (INTERRUPTER,GROUND FAULT) is an electrical safety device designed for insertion in a power distribution circuit to provide protection against serious injury or death caused by contact with damaged or defective electrical equipment. It disconnects the ungrounded conductor(s) when its integral circuitry senses an undesirable current flow to earth (ground). It includes a reset feature and may have a test facility. It may be designed for installation in an electrical panel or box, or may be a portable unit with its own enclosure. May include switches, circuit breakers, fuses, and the like; portable units may have connecting cables. Excludes overcurrent protective devices which also provide a ground fault sensing and interrupting capability. See also CIRCUIT BREAKER.
What is a Circuit Breaker Box Subassembly? 123 Items
A Circuit Breaker Box Subassembly is an enclosure which is designed to mount and protect one or more circuit breakers. It does not include the circuit breakers. It is designed for and may include a cover and accessories as mounting hardware, brackets, and conduit fittings. May include terminal boards and/or bus conductors used as a convenience for terminating the circuit breakers. For items which include circuit breakers, see CIRCUIT BREAKER BOX. For boxes not designed to mount and protect circuit breakers, see JUNCTION BOX.
What is a Circuit Breaker Shield? 64 Items
A Circuit Breaker Shield (SHIELD,CIRCUIT BREAKER) is an item specifically designed to be placed around or over one or more CIRCUIT BREAKER in order to prevent or reduce electrical and/or mechanical interference.
What is a Circuit Breaker Locking Device? 113 Items
A Circuit Breaker Locking Device (LOCKING DEVICE,CIRCUIT BREAKER) is an item of various shapes, having an integral locking device or facilities to accommodate an external locking device, which is designed to prevent unauthorized actuation of a CIRCUIT BREAKER. Excludes items designed to protect the actuator from damage or inadvertant throwing, see GUARD, SWITCH.
What is a Circuit Breaker Trip Device? 92 Items
A Circuit Breaker Trip Device (TRIP DEVICE,CIRCUIT BREAKER) is a device used to trip the circuit breakers requiring an ac voltage by using the stored energy in a capacitor.
What is a Circuit Breaker Remote Control? 14 Items
A Circuit Breaker Remote Control (REMOTE CONTROL,CIRCUIT BREAKER) is a device designed to remotely control a CIRCUIT BREAKER (as modified). It is generally mounted on a rail and installed on an electric panel or in a control box. It may include electrical cabling and external connections. The device may be controlled locally.
What is an Electrical Cable Protector? 1663 Items
An Electrical Cable Protector (PROTECTOR,ELECTRICAL CABLE) is an item designed to be interposed between a cable and its support or housing to prevent chafing caused by contraction and expansion due to changes in the ambient temperature or damage or injury from outside sources. Excludes such items as loom, cotton sleeving, rubber blankets, grade clamps and all types of conduit and INSULATION SLEEVING, ELECTRICAL.
What is a Ground Rod? 815 Items
A Ground Rod (ROD,GROUND) is an item designed to be driven into the earth for the purpose of establishing electrical contact. One end is pointed or tapered to facilitate entrance into the earth. See also ROD SECTION, GROUND.
What is a Junction Box Assembly? 303 Items
A Junction Box Assembly is two or more junction boxes on a common mounting or mounted on each other. Do not use for single junction boxes which are complex or unusual in construction, or for a junction box with an extension. See also TERMINAL BOX.
What is a Flexible Metal Conduit Assembly? 1693 Items
A Flexible Metal Conduit Assembly (CONDUIT ASSEMBLY,METAL,FLEXIBLE) is a specific length of CONDUIT, METAL, FLEXIBLE with permanently attached ferrule(s), coupling nut(s), elbow(s), or the like. Excludes detachable fittings such as tee(s), wye(s), or elbow(s). Also, excludes conduit like items that are designed for other than electrical applications. See also CASING (as modified).
What is a Fanning Strip? 416 Items
A Fanning Strip is an item made of rigid or semirigid insulating material for spacing or separating wire(s) and/or cable(s). For items having terminals, see TERMINAL BOARD; and INSULATOR (as modified).
What is a Pothead? 76 Items
A Pothead is a form of terminator, usually used in power and telephone distribution, designed to be hermetically sealed to the cable(s) to exclude moisture. It may have terminals accessible for testing, or a junction block to facilitate the connecting of cable(s) and wire. See also SEALING FITTING, ELECTRICAL CONDUIT.
COVER,INTERCONNECTING BOX 174 Items
What is a Switch Terminal Cover? 258 Items
A Switch Terminal Cover (COVER,SWITCH TERMINAL) is an item generally made of insulating material and used to protect switch terminals against damage, shorting and grounding. Excludes COVER, ELECTRICAL SWITCH; BASE, SWITCH and HOUSING, SENSITIVE SWITCH.
What is a Cable Terminal Chamber? 810 Items
A Cable Terminal Chamber (CHAMBER,CABLE TERMINAL) is an item specifically designed to admit, protect and seal conductor groups or cables and also affords a method of conveniently distributing, terminating and interconnecting the leads.
What is a Stuffing Tube? 5927 Items
A Stuffing Tube is an item specifically designed to pass an electrical cable or tube through a continuous structure with provisions for packing so as to prevent the leakage of liquids and/or gases through the opening. May include packing nut(s), adapter(s), washer(s), gasket(s), bushing(s), packing(s), cap(s), and/or plug(s).
What is a Cord Assembly Fastener? 118 Items
A Cord Assembly Fastener (FASTENER,CORD ASSEMBLY) is a fastener primarily designed to hold and secure a cord assembly so that pulling of the cord will not put a strain on the terminal connections.
What is an Electrical Grounding Plate? 965 Items
An Electrical Grounding Plate (PLATE,ELECTRICAL GROUNDING) is a rigid or semirigid item of electrically conductive material whose thickness is small in comparsion to its length and width. It is designed to be used for electrical grounding, particularly in junction box and power outlet applications. Excludes TERMINAL STRIP, GROUNDING; CONTACT STRIP, RADIO FREQUENCY GROUNDING; and STRIP, ELECTRICAL GROUNDING.
What is a Cable Collar? 562 Items
A Cable Collar (COLLAR,CABLE) is an item designed to be affixed around an electrical cable to limit the axial movement of the cable at the point where it passes through an opening. It has no facilities for retaining the cable to another object. Excludes BUSHING, STRAIN RELEIF, CABLE.
BASE,CHASSIS 610 Items
What is a Crossarm Brace? 69 Items
A Crossarm Brace (BRACE,CROSSARM) is an item specifically designed to provide reinforcement for a crossarm when mounted on a pole.
What is a Cable Hanger? 2113 Items
A Cable Hanger (HANGER,CABLE) is a metallic or nonmetallic item of various shapes, designed to position, suspend, support and/or secure electrical cable(s) to utility poles, bulkheads, messenger wires or other supporting surfaces. It may be fastened to the structure by means of rod(s), bolts(s), screw(s) and the like. Excludes CLAMP (as modified); HANGER, WIRE STRAND; BRACKET PIPE; and SUPPORT, ELECTRICAL CABLE.
What is an Insulator Pin? 51 Items
An Insulator Pin (PIN,INSULATOR) is an item designed to be inserted into a crossarm for the specific purpose of mounting pin type electrical insulators. Excludes BRACKET, INSULATOR.
What is a Stuffing Tube Plug? 296 Items
A Stuffing Tube Plug (PLUG,STUFFING TUBE) is an item designed to be fitted into the body of a STUFFING TUBE in order to prevent the leakage of liquids and/or gases through the opening in the absence of the cable normally passing through the tube.
What is an Electrical Cable Support? 373 Items
An Electrical Cable Support (SUPPORT,ELECTRICAL CABLE) is a collapsible framework specifically designed to be placed on the ground to hold electrical cable above the ground surface. Excludes BRACKET, PIPE.
What is an Electrical Conductor Bushing? 825 Items
An Electrical Conductor Bushing (BUSHING,ELECTRICAL CONDUCTOR) is an item of metal and/or insulating material having a smooth interior with rounded edges to prevent damage to the insulation of the wire or cable emerging there-from, designed to fit through panel(s) or the wall of a JUNCTION BOX. It may be designed to snap into a knockout hole, or designed with an external thread and furnished with or without a locking nut. For items designed to couple conduit to JUNCTION BOX, see BOX CONNECTOR, ELECTRICAL. See also BUSHING, ELECTRICAL CONDUIT and BUSHING, NONMETALLIC. For items having hexagonal shoulders, see CHASE NIPPLE, CONDUIT.
What is an Insulator Bracket? 188 Items
An Insulator Bracket (BRACKET,INSULATOR) is an item designed to be attached to a supporting surface for the specific purpose of positioning and sustaining an electrical insulator(s). Includes brackets specifically designed for transposing electrical lines.
What is a Cable Reinforcing Link? 33 Items
A Cable Reinforcing Link (LINK,REINFORCING,CABLE) is an item fabricated from metal rod bent longitudinally into an oval shape, one end of which is intended to fit a messenger cable or guy wire and the opposite end formed with a mounting hole for a lag screw. This item is designed to relieve the strain where a messenger cable or wire is installed at an angle to a suspension clamp.
What is a Stuffing Tube Adapter? 325 Items
A Stuffing Tube Adapter (ADAPTER,STUFFING TUBE) is a threaded or unthreaded item designed to mate with the mounting threads or mounting surfaces of a STUFFING TUBE, and to mount the STUFFING TUBE to a continuous structure (bulkhead or deck). The adapter may be recessed on the face to accommodate a gasket and/or washer.
What is a Junction Box? 6732 Items
A Junction Box is an enclosure of other than cast metal designed to house, mount, and protect, but does not include wiring connections or electrical device(s) such as terminals and/or terminal boards, switches, jacks, fuseholders, connectors, circuit breakers and the like. It is designed for and may include a cover and such accessories as mounting hardware, brackets, locks, clamps, mounts and conduit fittings. Excludes CONDUIT OUTLET; and CHAMBER, CABLE TERMINAL. For boxes which include electrical device(s) such as terminals and/or terminal boards, switches, fuseholders, jacks, connectors, circuit breakers and the like, or combinations thereof, see SWITCH BOX; FUZE BOX; JACK BOX; TERMINAL BOX; CIRCUIT BREAKER BOX; and DISTRIBUTION BOX. For boxes wired to provide the interconnecting facilities for a specific major group of electronic items outside of the box, see INTERCONNECTING BOX. See also INTERCONNECTING CABINET.
What is an Electrical Cable Nipple? 1728 Items
An Electrical Cable Nipple (CABLE NIPPLE,ELECTRICAL) is a preformed item having high electrical resistance designed for installation on end of cable or lead in order to cover the terminal or termination. It may partially cover the terminal of the item to which the cable or lead is attached. May also provide mechanical protection. Excludes INSULATION SLEEVING, ELECTRICAL.
What is an Electrical Equipment Cabinet? 6332 Items
An Electrical Equipment Cabinet (CABINET,ELECTRICAL EQUIPMENT) is an enclosure generally fabricated of sheet material designed to accommodate (but does not include) electrical/electronic equipment so that the equipment may be operated without removal. It may include wires, cables, terminal boards, connectors, etc., required for equipment operation. For items designed to accommodate equipment mounted on panels, see RACK, ELECTRICAL EQUIPMENT. See also CASE (2) (as modified). Excludes INTERCONNECTING BOX; INTERCONNECTING CABINET; JUNCTION BOX; and TERMINAL BOX.
What is an Electrical Equipment Rack? 10401 Items
An Electrical Equipment Rack (RACK,ELECTRICAL EQUIPMENT) is an open or inclosed frame structure designed to accommodate (but does not include) electrical/electronic equipment mounted on standard width panels so that the equipment may be operated after installation without being removed. It must have panel mounting rails that provide a uniform pattern of mounting holes that will accommodate various combinations of standard width panels. It may include wires, cables, terminal boards, connectors, and the like, required for equipment operation. See also MOUNTING BASE, ELECTRICAL EQUIPMENT; CABINET, ELECTRICAL EQUIPMENT; and CASE (2) (as modified). Excludes MAIN DISTRIBUTING FRAME, TELEPHONE and INTERMEDIATE DISTRIBUTING FRAME, TELEPHONE.
What is an Electrical Entrance Cap? 98 Items
An Electrical Entrance Cap (ENTRANCE CAP,ELECTRICAL) is an item primarily designed to provide for the entrance of electrical wires into a building, structure, or inclosure and to facilitate their connection to feeders or service conductors. It consists of an insulating block and a metallic housing designed to hold the insulating block and to fit an electrical conduit, conduit fitting, or cable of a specified size. This item is primarily intended for use in exposed, wet, or damp locations and is installed so as to preclude the entrance of rain or debris into the conduit. See also CAP, ELECTRICAL.
What is an Electrical Conduit Adapter? 2951 Items
An Electrical Conduit Adapter (ADAPTER,ELECTRICAL CONDUIT) is an item designed to couple or join two different types or sizes of conduits, and/or to be inserted in the opening of a conduit outlet or box to accommodate a conduit of a larger or smaller size; or it may be designed with internal thread on one end for mating with an electrical connector and an external thread on the other end for mating with a conduit coupling nut; or to establish necessary mechanical accommodations between an electrical conduit, conduit assembly and an electrical connector. Excludes REDUCING WASHER, KNOCKOUT and BOX CONNECTOR, ELECTRICAL. See also ADAPTER, CABLE TO CONNECTOR; and CHASE NIPPLE, CONDUIT.
What is an Electrical Conduit Sealing Fitting? 75 Items
An Electrical Conduit Sealing Fitting (SEALING FITTING,ELECTRICAL CONDUIT) is an item of metallic composition with a chamber for sealing compound and two hubs to accommodate electrical conduits of specified sizes. This item is designed with a filler hole and a removable screw plug to enable the pouring of sealing compound into the chamber for the purpose of preventing the passage of explosive gases through a conduit run. The item is primarily designed for use in hazardous locations and may be designed for vertical use, horizontal use, or both. For items which permit the connection or termination of wires, see POTHEAD. See also COUPLING, ELECTRICAL CONDUIT.
What is a Knockout Reducing Washer? 52 Items
A Knockout Reducing Washer (REDUCING WASHER,KNOCKOUT) is an item consisting of a flat, cupped or embossed metallic disk with a centerhole to fit an electrical conduit of a specified size and which is specifically designed to reduce the knockout opening in a box, panel, or wireway for the convenience of terminating electrical conduit of smaller size than the knockout. Excludes ADAPTER, ELECTRICAL CONDUIT.
What is an Electrical Conduit Nipple? 374 Items
An Electrical Conduit Nipple (NIPPLE,ELECTRICAL CONDUIT) is a nipple made of electrical conduit.
What is an Electrical Entrance Elbow? 58 Items
An Electrical Entrance Elbow (ENTRANCE ELBOW,ELECTRICAL) is an item of metallic composition cast in the form of an elbow, which is primarily intended to provide for the angular entrance of wires into a building, structure, or enclosure. This item, specifically designed for installation in exposed locations, has two hubs of a specified size to fit the service entrance conduit and may have a third hub for a driven ground connection. It has a cover which makes it tamper-proof and weather-resistant. It may include facilities for pulling electrical conductors but does not have facilities for mounting wiring devices.
What is an Electrical Conduit Bushing? 488 Items
An Electrical Conduit Bushing (BUSHING,ELECTRICAL CONDUIT) is an item of metal and/or insulating material having internal threads designed to fit over the end of electrical conduit and/or fittings to provide a smooth interior with a rounded edge to prevent damage to the insulation of the wire or cable emerging therefrom. It may be designed to fit over the end of thin wall conduit, and to be fitted with holding (staking) screws, or it may be provided with internal straight threads for attaching to thick wall electrical conduit or fittings. It may be fitted with a temporary knockout cap (bushcap), and grounding or bonding facilities. For externally threaded items, see BOX CONNECTOR, ELECTRICAL; BUSHING, ELECTRICAL CONDUCTOR; CHASE NIPPLE, CONDUIT and BUSHING, STRAIN RELIEF, CABLE. See also FERRULE, ELECTRICAL CONDUIT. Excludes plain sleeve bushings.
What is an Electrical Conduit Bondnut? 58 Items
An Electrical Conduit Bondnut (BONDNUT,ELECTRICAL CONDUIT) is an item of metallic composition, with internal threads, designed to fit the external threads of an electrical conduit or fitting, and which, when installed, provides a method of tightening and locking the connection and completes a positive bond between the conduit and apparatus or fitting to which connected. The bonding or grounding action is accomplished by sharp beveled teeth or by a screw(s). See also LOCKNUT, ELECTRICAL CONDUIT and NUT, COUPLING, ELECTRICAL CONDUIT.
What is an Electrical Conduit Union? 186 Items
An Electrical Conduit Union (UNION,ELECTRICAL CONDUIT) is an item comprising three members, so constructed that one of the members holds the remaining two in a fixed butted position; generally used to connect two conduits, conduit fittings, or a conduit and a conduit fitting in such a manner that they may be disconnected without disturbing the rest of the conduit line. See also COUPLING, ELECTRICAL CONDUIT.
What is an Electrical Conduit Elbow? 565 Items
An Electrical Conduit Elbow (ELBOW,ELECTRICAL CONDUIT) is an item fabricated in the form of an elbow and having both ends threaded female, or with unthreaded connecting facilities on both ends, or connecting facilities on both ends, one of which is a male thread without boss or shoulder. If a locknut or bondnut is included, it shall not be considered as a thread boss or shoulder. It is primarily intended to connect conduit to conduit. It may have a removable cover to facilitate pulling wires, but does not include facilities for mounting wiring devices. For items having a removable cover to facilitate pulling wires and specifically designed for close installation in exposed outdoor locations and which may have facilities for an outside driven ground, see ENTRANCE ELBOW, ELECTRICAL. For items with one end having a male thread with a boss or shoulder, see BOX CONNECTOR, ELECTRICAL. For items having a removable screw cap for pulling wires, with the cap positioned 45 degrees from the connection facilities, see ENTRANCE ELBOW, ELECTRICAL. For items fabricated in the form of an elbow having both ends threaded male, see BEND, ELECTRICAL CONDUIT.
What is a Conduit Outlet? 1567 Items
A Conduit Outlet is an item designed to be used in a conduit system for the purpose of providing outlets or attachments for electrical wiring devices and/or designed to provide access and facilitate installment of wires. It may or may not include a cover(s). It does not include wiring devices. Excludes ENTRANCE ELBOW, ELECTRICAL. See also JUNCTION BOX.
What is an Electrical Conduit Bend? 265 Items
An Electrical Conduit Bend (BEND,ELECTRICAL CONDUIT) is an item fabricated in the form of a curved section specifically designed to mechanically join a conduit or conduit fitting to another conduit or conduit fitting. Items of this type do not have a boss or hub at either end, nor do they have facilities for mounting wiring devices or pulling electrical conductors. See also ELBOW, ELECTRICAL CONDUIT and CONDUIT OUTLET.
What is an Electrical Wall Plate? 1193 Items
An Electrical Wall Plate (PLATE,WALL,ELECTRICAL) is an item designed to mount directly on a bracket or an electrical current carrying wiring device(s) such as switch(es) or outlet(s) (receptacle). The bracket(s) or electrical current carrying device is mounted in a JUNCTION BOX. For trade designated items designed to be attached directly on or through a bracket or electrical wiring device to a CONDUIT OUTLET, see COVER, CONDUIT OUTLET. For items designed for mounting directly on a JUNCTION BOX, see COVER, JUNCTION BOX.
What is an Interconnecting Box? 2665 Items
An Interconnecting Box is an inclosure which includes mounts and protects such items as switches, circuit breakers, jacks, fuseholders, connectors, terminals and/or terminal boards, resistors, capacitors, transformers, and the like. It is primarily designed to interconnect two or more electrical and/or electronic items, except primary power source(s) such as generator(s) and battery(ies). It may include a cover or door. For inclosures which connect one or more primary power source(s) to one or more electrical and/or electronic item(s), see DISTRIBUTION BOX. See also CIRCUIT BREAKER BOX; TERMINAL BOX and INTERCONNECTING CABINET.
What is an Electrical Rosette? 49 Items
An Electrical Rosette (ROSETTE,ELECTRICAL) is an item designed for the connection and support of an electrical drop cord.
What is a Pole Step? 15 Items
A Pole Step (STEP,POLE) is an item designed to be used as a foot rest in ascending and descending utility poles, when attached thereto.
What is an Underground Cable Rack? 14 Items
An Underground Cable Rack (RACK,CABLE,UNDERGROUND) is an item designed for the purpose of supporting cable(s). It is shaped like a channel and has a U like cross section with through holes, slots and the like, along the length. When mounted in the vertical position it will accept hooks which extend out perpindicularly from the surface to support cable(s). The item does not include hooks. See also RACK, CABLE, INTERIOR.
What is an Interior Cable Rack? 588 Items
An Interior Cable Rack (RACK,CABLE,INTERIOR) is an open frame structure primarily designed to support electrical cables in buildings and shelters. Its purpose is to provide, by itself or by joining to similar structures, a path or runway for cable which may connect two or more pieces of electrical equipment. It does not include items designed to hold a single cable. See also RACK, CABLE, UNDERGROUND; and HANGER, CABLE.
What is an Electrical Conduit Ferrule? 497 Items
An Electrical Conduit Ferrule (FERRULE,ELECTRICAL CONDUIT) is an item usually of one piece construction, but which may be comprised of more than one piece, designed to be affixed permanently or temporarily to the end of an electrical conduit to form an end fitting. Unflanged items form a permanent end fitting which affords mechanical protection to emerging conductors. Flanged items are used with another fitting normally a conduit coupling nut, to make the conduit adaptable for connection to an electrical connector, junction box or other conduit accessory or fitting. Excludes RING, ELECTRICAL BONDING; BUSHING, ELECTRICAL CONDUIT; and BUSHING, PLAIN SLEEVE. See also FERRULE-NUT COUPLING, ELECTRICAL CONDUIT.
What is an Underground Cable Rack Hook? 13 Items
An Underground Cable Rack Hook (HOOK,UNDERGROUND CABLE RACK) is a rigid item designed to be perpendicularly attached to an underground cable rack to be used as the supporting arm for cables. May include insulators.
What is an Electrical Conduit End Seal Disk? 34 Items
An Electrical Conduit End Seal Disk (DISK,END SEAL,ELECTRICAL CONDUIT) is a flat circular item fitted on the end of an electrical conduit in order to close the end to prevent the entrance of water or refuse, prior to installation of the wires, during shipment and/or construction. The item may be held in place by means of a conduit bushing and may be easily removed to permit installation of the wires.
What is a Cable Spacer? 122 Items
A Cable Spacer (SPACER,CABLE) is an item constructed specifically to provide a separation between lashed lead covered cable and messenger strand for the prevention of injury to sheath of cable.
What is an Electrical Box Connector? 2049 Items
An Electrical Box Connector (BOX CONNECTOR,ELECTRICAL) is an item designed to mechanically connect in a straight line or an angle electrical conduit, conduit assemblies, wire, wireway, cable, or cable assemblies to a point of termination, such as a junction box, conduit outlet, or the like. The termination end must have an external thread with a boss or shoulder and may be furnished with a locknut or bondnut; or, must have internal thread with which is furnished an externally threaded hub with a wrenching feature; or be of a snap-in type that may be installed from either inside or outside the box and secured with a captive screw. It is not intended to join conduit to conduit. For angle type items having a male thread without a boss or shoulder, see ELBOW, ELECTRICAL CONDUIT. Does not include facilities to mount wiring devices. Excludes CHASE NIPPLE, CONDUIT.
What is an Electrical Conduit Coupling? 641 Items
An Electrical Conduit Coupling (COUPLING,ELECTRICAL CONDUIT) is an item specifically designed and constructed to mechanically connect in a straight line two sections of electrical conduit or like fabrication and of the same size. For three-piece items which may be disassembled without disturbing the rest of the conduit line, see UNION, ELECTRICAL CONDUIT. See also ADAPTER, ELECTRICAL CONDUIT; POTHEAD; and SEALING FITTING, ELECTRICAL CONDUIT.
What is an Electrical Conduit Wye? 202 Items
An Electrical Conduit Wye (WYE,ELECTRICAL CONDUIT) is a type of electrical conduit fitting fabricated in the form of the letter Y, having three hubs permitting conduits and/or conduit fittings to be taken off laterally from the main line of equal degree on each side, or with the main line continuing straight with a branch taking off at an angle. For items of this type having facilities for mounting wiring devices, see CONDUIT OUTLET.
What is a Cable Rack Extension? 68 Items
A Cable Rack Extension (EXTENSION,CABLE RACK) is a metallic irregularly shaped item designed to permit cable racks to be mounted away from the mounting surface to escape obstructions or limited space.
What is an Electrical Bonding Ring? 188 Items
An Electrical Bonding Ring (RING,ELECTRICAL BONDING) is an item of metallic composition, usually round and flat with a center hole or slotted hole designed to accommodate an electrical cable or conduit, and which, when used in conjunction with a cable clamp or similar locking device, completes a positive bond between the cable or conduit fitting, such as connectors, adapters, and couplings, and the cable or conduit shield and/or individual conductor shield(s). See also FERRULE, ELECTRICAL CONDUCTOR.
What is an Electrical Equipment Rack Base? 354 Items
An Electrical Equipment Rack Base (BASE,ELECTRICAL EQUIPMENT RACK) is a structural item which is specifically designed to provide a suitable flat surface to support one or more RACK, ELECTRICAL EQUIPMENT. It may include legs and/or leveling devices. For similar items designed primarily for the purpose of damping shock and/or vibration, see MOUNTING BASE, ELECTRICAL EQUIPMENT. See also STAND, (as modified).
What is an Electrical Cable Splice Protector? 74 Items
An Electrical Cable Splice Protector (PROTECTOR,SPLICE,ELECTRICAL CABLE) is an item specifically designed to be mechanically fastened to an electrical cable on each end of a splice to protect the splice from excessive strain. It usually has provisions for making a waterproof or moisture-proof joint. Excludes INSULATION SLEEVING, ELECTRICAL.
What is an Electrical Conduit Coupling Nut? 343 Items
An Electrical Conduit Coupling Nut (NUT,COUPLING,ELECTRICAL CONDUIT) is an item of metallic composition with internal threads and an internal seat designed to join a ferrule capped conduit to a fitting. See also BONDNUT, ELECTRICAL CONDUIT.
What is an Insulator Bracket Strap? 24 Items
An Insulator Bracket Strap (STRAP,INSULATOR BRACKET) is an item specifically designed to reinforce insulator brackets at their fastenings on a line construction pole when high strength wire or long spans are used.
What is a Junction Box Cover? 1392 Items
A Junction Box Cover (COVER,JUNCTION BOX) is a cover containing facilities for mounting directly on a JUNCTION BOX. It may have provisions for the insertion and/or mounting of electrical devices, such as switches, connectors, additional covers, and jewels. It may include the jewel(s). For covers having facilities for mounting on brackets or on current carrying devices such as switches and receptacle connectors, see PLATE, WALL, ELECTRICAL. See also COVER, CONDUIT OUTLET.
What is a Wire Strand Hanger? 36 Items
A Wire Strand Hanger (HANGER,WIRE STRAND) is a metallic item, grooved to fit a wire strand such as a messenger strand, and designed to be attached to a utility pole or other supporting surface for the purpose of horizontally suspending and firmly securing the wire strand. See also HANGER, CABLE, and CLAMP, ELECTRICAL CONDUCTOR, STRAIN. Excludes BRACKET, PIPE.
What is an Electrical Conduit Cross? 17 Items
An Electrical Conduit Cross (CROSS,ELECTRICAL CONDUIT) is a type of electrical conduit fitting fabricated in the form of a cross having four hubs in the same plane, the axes of which form a right angle, and primarily intended to join electrical conduits and/or conduit fittings. For items of this type having ties for mounting wiring devices, see CONDUIT OUTLET.
What is an Electrical Conduit Tee? 197 Items
An Electrical Conduit Tee (TEE,ELECTRICAL CONDUIT) is a type of electrical conduit fitting fabricated in the form of the letter T having three hubs for joining electrical conduits and/or conduit fittings. For items of this type having facilities for mounting wiring devices, see CONDUIT OUTLET.
What is a Blank Panel? 3689 Items
A Blank Panel (PANEL,BLANK) is a panel designed to fill a space not occupied by actual operating components, and may have instructions, component designations, or component identifications etched or printed thereon.
CASE,ELECTRICAL EQUIPMENT CABINET 246 Items
CASE,SWITCH BOX 253 Items
What is a Ground Rod Section? 46 Items
A Ground Rod Section (ROD SECTION,GROUND) is an item which is part of a multi-section ground rod. Excludes items with driving points. see also ROD, GROUND.
What is a Junction Box Extension? 79 Items
A Junction Box Extension (EXTENSION,JUNCTION BOX) is an item designed to be mounted on a JUNCTION BOX to increase the depth of the box.
What is a Stuffing Tube Packing Nut? 627 Items
A Stuffing Tube Packing Nut (PACKING NUT,STUFFING TUBE) is a threaded or unthreaded device, with an unthreaded center hole to accommodate an electrical cable or tube, designed to mate with the threads or sealing components of a stuffing tube body for the purpose of compressing packing around the electrical cable or tube. A component of a STUFFING TUBE.
What is a Wire Strand Hanger Safety Strap? 10 Items
A Wire Strand Hanger Safety Strap (STRAP,SAFETY,WIRE STRAND HANGER) is an item primarily designed to be attached to a cable suspension clamp mounting bolt, providing a guard or loop below the mounting bolt to support the cable should the messenger fail.
What is a Wire Strand Hanger Support Strap? 14 Items
A Wire Strand Hanger Support Strap (STRAP,SUPPORT,WIRE STRAND HANGER) is an item primarily designed to provide additional support to the end of the clamp mounting bolt by transmitting a portion of the stresses to the pole or supporting member.
What is a Transmission Line Grounding Set? 88 Items
A Transmission Line Grounding Set (GROUNDING SET,TRANSMISSION LINE) is an item consisting of two or more clamp type devices with facilities for the connection of jumpers and/or grounding cables. When installed this item provides for the temporary grounding of de-energized electrical transmission line(s) to protect workmen against injury resulting from accidental re-energization of the lines. Excludes CLAMP, ELECTRICAL.
What is a Cable Marker Sleeve? 13747 Items
A Cable Marker Sleeve (SLEEVE,MARKER,CABLE) is a cylindrical item into which a wire or cable is inserted. It is inscribed for identification, to indicate connections or routing of electrical cables and the like. For unmarked items made of insulation material, see INSULATION SLEEVING, ELECTRICAL. For items secured by crimping, slot and tongue, or other similar methods of fastening, see BAND, MARKER.
What is an Electrical Standardized Components Case? 469 Items
An Electrical Standardized Components Case (CASE,STANDARDIZED COMPONENTS,ELECTRICAL) is a case which by virtue of standardization of equipment dimensions is designed to contain one or more components of different basic names. Do not use for cases designed only for specific items or a specific grouping of items.
What is an Electrical Conduit Ferrule-Nut Coupling? 29 Items
An Electrical Conduit Ferrule-Nut Coupling (FERRULE-NUT COUPLING,ELECTRICAL CONDUIT) is an item consisting of a FERRULE, ELECTRICAL CONDUIT upon which is permanently mounted a NUT, COUPLING, ELECTRICAL CONDUIT. It is designed to be attached to an electrical conduit and used to mechanically connect the conduit to another conduit fitting such as a box connector. Excludes BOX CONNECTOR, ELECTRICAL; ADAPTER, ELECTRICAL CONDUIT; and COUPLING, ELECTRICAL CONDUIT.
What is a Strain Electrical Conductor Clamp? 454 Items
A Strain Electrical Conductor Clamp (CLAMP,ELECTRICAL CONDUCTOR,STRAIN) is a clamp designed to support and/or dead end a suspended conductor(s). Must have a provision for attachment to an insulator. Insulator is not included. Excludes HANGER, WIRE STRAND.
What is an Electrical Entrance Cap Shell? 22 Items
An Electrical Entrance Cap Shell (SHELL,ELECTRICAL ENTRANCE CAP) is an item similar to ENTRANCE CAP, ELECTRICAL, but it does not include an insulating block. See also CAP, ELECTRICAL.
What is a Flexible Metal Conduit? 892 Items
A Flexible Metal Conduit (CONDUIT,METAL,FLEXIBLE) is a conduit constructed of circular flexible metal tubing. It may be shielded with a woven metal wire braid covering, with a packing between the joints, and it may have a rubber and/or synthetic rubber or plastic outer protective covering. It contains no fittings. See also CONDUIT, METAL, RIGID. Excludes conduit like items that are designed for other than electrical applications.
What is a Rigid Metal Conduit? 978 Items
A Rigid Metal Conduit (CONDUIT,METAL,RIGID) is a conduit of one-piece tubular construction, designed as thin wall type (EMT) and thick wall type. The items may be threaded and furnished with a COUPLING, ELECTRICAL CONDUIT and/or thread protection. See also CONDUIT ASSEMBLY,METAL, RIGID. Excludes conduit like items that are designed for other than electrical applications.
What is a Rigid Nonmetallic Conduit? 428 Items
A Rigid Nonmetallic Conduit (CONDUIT,NONMETALLIC,RIGID) is a conduit of one piece construction of asbestos and cement, bituminized fiber, or rigid plastics material. The item may have both ends processed for connection by means of a coupling. One coupling may be furnished for each length of conduit. The conduit may or may not be impregnated with coal tar pitch. Excludes conduit like items that are designed for other than electrical applications.
What is a Radio Frequency Cable Splicing Kit? 56 Items
A Radio Frequency Cable Splicing Kit (SPLICING KIT,RADIO FREQUENCY CABLE) is a collection of items used in splicing a radio frequency cable, such as yokes, plugs, cable, switches, and power transformer.
What is a Drive Ring? 46 Items
A Drive Ring is a metal item having an eye attached or integral with a nail-like item. It is designed for running twisted pair, bridle, or parallel drop wires on building walls, fences, poles and the like. For similar items having threaded ends, see BRIDLE RING. Excludes HOOK, SUPPORT.
What is a Bridle Ring? 16 Items
A Bridle Ring is a metal item having an open eye on one end and a wood screw, or machine thread on the opposite end. The machine thread item may be furnished with a nut or toggle attachment. It is designed for running twisted pair, bridle or parallel drop wires on building walls, fences, poles, and the like. For similar items having a drive nail end, see DRIVE RING. Excludes HOOK, SUPPORT.
What is an Electrical Equipment Leg? 321 Items
An Electrical Equipment Leg (LEG,ELECTRICAL EQUIPMENT) is an item which, in conjunction with one or more similar items, aids in the support of electrical equipment. See also LEG SECTION, ELECTRICAL EQUIPMENT.
What is an Electrical Equipment Leg Section? 129 Items
An Electrical Equipment Leg Section (LEG SECTION,ELECTRICAL EQUIPMENT) is an item which in itself is not a complete functioning item. It consists of parts which, together with other similar parts, form an electrical equipment leg.
What is a Conduit Chase Nipple? 146 Items
A Conduit Chase Nipple (CHASE NIPPLE,CONDUIT) is an externally threaded item having a hexagonal shoulder with a smooth bore. It may be used to connect two junction boxes or to accommodate thin wall conduit or tubing by slip fit to a junction box or conduit outlet. It may or may not be furnished with a locknut. For items externally and internally threaded, see ADAPTER, ELECTRICAL CONDUIT. See also BUSHING, ELECTRICAL CONDUCTOR.
What is a Cable Strain Relief Bushing? 486 Items
A Cable Strain Relief Bushing (BUSHING,STRAIN RELIEF,CABLE) is an insulating item designed to prevent movement along the axis of an electric wire or cable in either direction when placed in the chassis of such items as electric fans, irons, drills, motors, radios, clocks and the like. It may be designed for use in the central column of a gun mount and the like. See also COLLAR, CABLE.
What is an Electrical Nonmetallic Conduit Assembly? 1445 Items
An Electrical Nonmetallic Conduit Assembly (CONDUIT ASSEMBLY,NONMETALLIC,ELECTRICAL) is a specific length of tubing or conduit, nonmetallic, rigid or flexible, with or without electrical rating, and with permanently attached ferrule(s), coupling nut(s), or the like. It may include one or more woven wire braid cover(s). Excludes detachable fittings such as tee(s), wye(s) or elbow(s). Also excludes conduit like items that are designed for other than electrical applications.
What is a Conduit Outlet Cover? 543 Items
A Conduit Outlet Cover (COVER,CONDUIT OUTLET) is an item of any material, with or without threads, designed to mate with a CONDUIT OUTLET or a SEALING FITTING, ELECTRICAL CONDUIT. It may be designed as a removable side plate cover with or without hubs. It may have provisions for draining or venting. It may be designed for the insertion and/or mounting of electrical devices, such as switches, receptacle connectors, and indicator light lenses. It may include mechanisms for the external operation of switches but does not include the wiring devices. For items designed to mount directly on a bracket or an electrical current carrying wiring device, see PLATE, WALL, ELECTRICAL. See also COVER, JUNCTION BOX.
What is an Electrical Conduit Coupling Nut Clamp? 53 Items
An Electrical Conduit Coupling Nut Clamp (CLAMP,COUPLING NUT,ELECTRICAL CONDUIT) is an item designed to be clamped on a conduit. It has extending prongs to engage and lock in position a NUT, COUPLING, ELECTRICAL CONDUIT.
What is an Electrical Equipment Shelf? 1252 Items
An Electrical Equipment Shelf (SHELF,ELECTRICAL EQUIPMENT) is an item relatively thin in its vertical dimension, designed to provide a horizontal working surface on the front of a CABINET, ELECTRICAL EQUIPMENT or a RACK, ELECTRICAL EQUIPMENT. May include wiring, power outlets and similar accessories. May be furnished with slides to permit stowing within the cabinet or rack when not in actual use.
What is a Shop Set Installation Electrical Kit? 51 Items
A Shop Set Installation Electrical Kit (ELECTRICAL KIT,SHOP SET INSTALLATION) is a collection of wiring and fixture items, such as box, cable, connector, cord, cover, cutout, fuse, receptacle, socket, switch, and the like, designed to wire shop set equipment when installing it in a shop truck as part of the basic load.
What is a Line Supporting Strap? 40 Items
A Line Supporting Strap (STRAP,LINE SUPPORTING) is a flexible strap, furnished with a buckle, specificifically designed to support other items, such as cable(s), wire(s), tube(s), and the like. The buckle may be permanently assembled and may be provided with a mounting feature. The strap may be used to bridge a channel by mounting the buckle and strap separately. Excludes CLAMP, LOOP; STRAP, RETAINING; STRAP, LEATHER; and STRAP, WEBBING.
What is an Electrical Conduit Locknut? 476 Items
An Electrical Conduit Locknut (LOCKNUT,ELECTRICAL CONDUIT) is an item having internal threads designed to fit the external threads of an electrical conduit or fitting for connecting to a junction box, panel, wireway, or other point of termination, and which, when installed, provides a method of tightening to lock the connection. The items may be either flat-sided or circular in external shape and must have a specific conduit size designation. SEE BONDNUT, ELECTRICAL CONDUIT and LOCKNUT, TUBE FITTING. Excludes NU T (1), PLAIN HEXAGON.
What is a Flexible Nonmetallic Conduit? 1670 Items
A Flexible Nonmetallic Conduit (CONDUIT,NONMETALLIC,FLEXIBLE) is a conduit of one piece flexible, nonmetallic, tubular construction. The item may have an outer covering for additional mechanical protection, a woven wire braid for interference suppression, and/or wire reinforcement. For items having rated electrical characteristics, see INSULATION SLEEVING, ELECTRICAL. Excludes TUBING, NONMETALLIC; and TUBING, PLASTIC, SPIRAL WRAP. Excludes conduit like items that are designed for other than electrical applications.
What is an Electrical Equipment Drawer? 3773 Items
An Electrical Equipment Drawer (DRAWER,ELECTRICAL EQUIPMENT) is an item designed to slide in and out of a CABINET, ELECTRICAL EQUIPMENT or RACK, ELECTRICAL EQUIPMENT and used to mount and/or store electrical/electronic equipment. It does not include the electrical/electronic equipment, but may include wires, cables, terminal boards, connectors, etc.
What is an Electrical Equipment Mounting Base? 9438 Items
An Electrical Equipment Mounting Base (MOUNTING BASE,ELECTRICAL EQUIPMENT) is a tray or racklike item designed to provide a supporting surface to which electrical/electronic equipment may be secured when installed in aircraft, vehicles, or other types of mobile equipment. It may be equipped with shock or vibration isolation devices and/or wires, cables, terminal boards, connectors, etc. Excludes BASE, ELECTRICAL EQUIPMENT RACK and MOUNT, RESILIENT. See also RACK, ELECTRICAL EQUIPMENT.
What is an Electronic Junction Rack? 980 Items
An Electronic Junction Rack (RACK,ELECTRONIC JUNCTION) is an open frame structure specifically designed to accommodate (but does not include) electronic terminal junctions (TERMINAL BOARD; TERMINAL (1), FEEDTHRU; and the like). The item may consist of separable or nonseparable channels, mounting blocks and fastening devices. Mounting blocks are designed so the assembly can be mounted on panels or bulkheads. Tightening the fastening devices which secure the channels to the mounting blocks will also secure terminal junctions within the frame assembly. Excludes RACK, ELECTRICAL EQUIPMENT; TERMINAL BOARD; JUNCTION BOX; and HARDWARE KIT, ELECTRONIC EQUIPMENT.
What is a Safety Shorting Probe? 23 Items
A Safety Shorting Probe (PROBE,SAFETY SHORTING) is a device used to discharge the voltage stored in cathode ray tubes and other electronic equipment which have capacitor type filtering circuits that retain a voltage charge after the primary power has been removed. See also DISCHARGER, ELECTROSTATIC.
What is an Electrical Tie Down Mounting Base? 985 Items
An Electrical Tie Down Mounting Base (MOUNTING BASE,TIE DOWN,ELECTRICAL) is an item used in conjunction with STRAP, TIEDOWN, ELECTRICAL COMPONENTS to secure wire(s) or cable(s) to a supporting surface.
What is a Raceway Cover? 580 Items
A Raceway Cover (COVER,RACEWAY) is an item used in conjunction with open style raceway for the protection of electrical wires and/or cables. May be attached by snap closure, stud and nut, or similar device. Generally furnished in bulk quantities.
RACEWAY,METALLIC 1662 Items
RACEWAY,NONMETALLIC 1076 Items
What is an Electrical-Electronic Equipment Panel? 9429 Items
An Electrical-Electronic Equipment Panel (PANEL,ELECTRICAL-ELECTRONIC EQUIPMENT) is a panel which is designed to accommodate, but does not include connectors, displays, indicators, jacks, meters, switches, and the like. It may include clinch nuts or fastening devices as part of the item. Excludes PANEL, BLANK.
What is an Electric Cable Joint Box? 168 Items
An Electric Cable Joint Box (JOINT BOX,ELECTRIC CABLE) is a special box made of cast metal, molded or shrinkable plastic which encases the electric connections of two or more electric cables, protects them against tensions and other excessive wear by means of mechanical attachment to the cable covering, and keeps moisture, gasses, and other environmental conditions away from the splicing by means of sealing it with a special casting compound or by heatshrinkage or bonding. The JOINT BOX, ELECTRIC CABLE as a rule is buried in the ground or put on a cable rack and is not reusable. Assembly accessories may be included.
What is an Electric Cable Joint Box Supplementary Equipment? 28 Items
An Electric Cable Joint Box Supplementary Equipment (SUPPLEMENTARY EQUIPMENT,JOINT BOX,ELECTRIC CABLE) is a pre-determined combination of different accessories which are packed as a set and are used as supplement to the normal assembly accessories of the JOINT BOX, ELECTRIC CABLE.
What is an Electrical-Electronic Equipment Chassis? 12584 Items
An Electrical-Electronic Equipment Chassis (CHASSIS,ELECTRICAL-ELECTRONIC EQUIPMENT) is a box, frame, or plate fabricated of electrically conductive material designed to mount, but which does not include, electronic components and their associated circuitry. It may have facilities for attachment to a rack or cabinet or to accommodate specially designed components. It may include a shielding function, integral wiring, and mounting hardware as part of the item. Excludes MOUNTING BASE, ELECTRICAL EQUIPMENT.
What is a Raceway Elbow? 312 Items
A Raceway Elbow (ELBOW,RACEWAY) is an angular section of RACEWAY for making turns in a run of RACEWAY.
What is a Mounting Plate? 715 Items
A Mounting Plate (PLATE,MOUNTING) is a metallic or nonmetallic item which is rigid, flat and generally smooth. Its thickness is small in comparison to its length and width. It is designed for mounting another item and may have drilled or threaded holes or other facilities for mounting to a supporting object or surface. See SUPPORT, as modified. Do not use if a more specific name applies.
What is an Electrical Conduit Ferrule Anchor Plate? 30 Items
An Electrical Conduit Ferrule Anchor Plate (ANCHOR PLATE,ELECTRICAL CONDUIT FERRULE) is a piece of flat material, specially designed to secure a FERRULE, ELECTRICAL CONDUIT.
What is a Nonmetallic Raceway Assembly? 196 Items
A Nonmetallic Raceway Assembly (RACEWAY ASSEMBLY,NONMETALLIC) is a channel consisting of one or more parts with other than circular cross sections. The item forms part of bulk quantities which have been specially treated and provided with miter heads and/or mounting holes, for example. It may also be produced in one piece by special molding processes such as thermoplastic pressure die-casting. The item protects electrical wires and/or cables against mechanical damage. Excludes RACEWAY (1), NONMETALLIC.
What is a Metallic Raceway Assembly? 445 Items
A Metallic Raceway Assembly (RACEWAY ASSEMBLY,METALLIC) is a channel consisting of one or more parts with other than circular cross sections. The item is not supplied in bulk quantities and has a particular shape with specific dimensions conforming to a predetermined cable run (e.g., angular or U-shape). The item protects cables against damage. Excludes RACEWAY (1), METALLIC.
What is a Cable Crosshead? 60 Items
A Cable Crosshead (CROSSHEAD,CABLE) is an item consisting of preformed material, cable clamps, a cover sheet and mounting hardware. It is designed for supporting and securing communication equipment interconnect cables with cable clamps in cases where the communication equipment is mounted in frame-type racks facing each other. The item has fixed dimensions and is prefabricated to a specific shape. It forms part of an INSTALLATION KIT (1), ELECTRONIC EQUIPMENT (e.g., for cabins). Excludes RACEWAY (1), METALLIC; RACEWAY ASSEMBLY, METALLIC; RACEWAY (1), NONMETALLIC; RACEWAY ASSEMBLY, NONMETALLIC.
What is an Electrical Box Sealing Flange? 31 Items
An Electrical Box Sealing Flange (FLANGE,SEALING,ELECTRICAL BOX) is an item designed for tightly sealing those openings of a JUNCTION BOX towards the outside or inside that are neither provided for being connected with other JUNCTION BOX nor for cable entry. Excludes FLANGE, ADAPTER, ELECTRICAL BOX and FLANGE, ELECTRICAL BOX ENTRY.
What is an Electrical Box Entry Flange? 75 Items
An Electrical Box Entry Flange (FLANGE,ELECTRICAL BOX ENTRY) is an item designed for tightly sealing the openings of a JUNCTION BOX, provided for cable entry, towards the inside or outside. It may include openings or knock-out holes with or without threads that are provided for the installation of STUFFING TUBE or other cable entries. Excludes FLANGE, SEALING, ELECTRICAL BOX and FLANGE, ADAPTER, ELECTRICAL BOX.
What is an Electrical Box Adapter Flange? 23 Items
An Electrical Box Adapter Flange (FLANGE,ADAPTER,ELECTRICAL BOX) is an item which, through assembly of two or more JUNCTION BOX, forms a distribution system tightly sealing the junction openings towards the outside. Excludes FLANGE, ELECTRICAL BOX ENTRY and FLANGE, SEALING, ELECTRICAL BOX.
What is an Electrical Box Divider? 61 Items
An Electrical Box Divider (DIVIDER,ELECTRICAL BOX) is a plate mounted vertically to the floor of a JUNCTION BOX which divides the interior of the box thus separating two or more electrical circuits or a plate compartmentalizing or sealing off one or more connection openings which occur when several JUNCTION BOX are connected to form a distribution section. Excludes FLANGE, SEALING, ELECTRICAL BOX.
What is an Electrical Equipment Foot? 272 Items
An Electrical Equipment Foot (FOOT,ELECTRICAL EQUIPMENT) is an item which in conjunction with an electrical equipment leg or the like, aids in the support of electrical equipment. It is a broad based metallic or nonmetallic item which serves as a stabilizer.
What is an Electrical Standardized Components Case Section? 39 Items
An Electrical Standardized Components Case Section (CASE SECTION,STANDARDIZED COMPONENTS,ELECTRICAL) is an item of various shapes or design representing an integral part of a CASE (2), STANDARDIZED COMPONENTS, ELECTRICAL. It may include fastening, sealing, padding and/or locking devices. It does not include components.
What is a Guide Rail? 820 Items
A Guide Rail (RAIL,GUIDE) is an item used for fixing/mounting TERMINAL JUNCTION BLOCK, SECTIONAL.
What is an Electronic Equipment Mounting Tray? 1990 Items
An Electronic Equipment Mounting Tray (TRAY,MOUNTING,ELECTRONIC EQUIPMENT) is an item which facilitates the mounting of electronic/electrical equipment(s) into racks and the like, having holes and/or clamping devices enabling quick replacement of the mounted equipment. does not include the equipment for which designed. may include interconnecting facilities and resilient mountings. excludes DRAWER, ELECTRICAL EQUIPMENT, RACK MOUNTED; DRAWER, ELECTRICAL EQUIPMENT CABINET; CHASSIS, ELECTRICAL EQUIPMENT and PLATE, MOUNTING, ELECTRICAL EQUIPMENT.
What is an Electrical Conductor Protector? 34 Items
An Electrical Conductor Protector (PROTECTOR,ELECTRICAL CONDUCTOR) is an item designed to be interposed between an electrical conductor which may be bare or insulated and its support or housing to prevent chafing caused by contraction and expansion due to changes in the ambient temperature or damage or injury from outside sources. Excludes such items as loom, cotton sleeving, rubber blankets, grade clamps, and all types of conduit and INSULATION SLEEVING, ELECTRICAL.
What is an Electrical Fitting Mounting Base? 272 Items
An Electrical Fitting Mounting Base (BASE,MOUNTING,ELECTRICAL FITTING) is an item serving as a base for electrical pieces such as switches, ceiling roses. It is usually recessed at the base for accommodating wires.
What is an Aircraft Equipment Quick Disconnect Handle? 10 Items
An Aircraft Equipment Quick Disconnect Handle (HANDLE,QUICK DISCONNECT,AIRCRAFT EQUIPMENT) is a specially designed handle having an internal lock mechanism. It has two headed ends which mate two housing equipment apertures. When the trigger is actuated one of these ends moves laterally and locks the handle in the housing electrical/electronic equipment. It is used to facilitate handling of equipment which must be installed or replaced depending on aircraft missions.
What is a Rigid Metal Conduit Assembly? 777 Items
A Rigid Metal Conduit Assembly (CONDUIT ASSEMBLY,METAL,RIGID) is a straight or prebent length of a CONDUIT, METAL, RIGID complete with permanently attached fitting(s), such as flanges, wye(s) and tee(s). See also TUBE ASSEMBLY, METAL and CASING (as modified). Excludes conduit like items that are designed for other than electrical applications.
What is an Interconnecting Cabinet? 264 Items
An Interconnecting Cabinet is an enclosure, the principal purpose of which is to house, protect, and provide a connecting or branching point for one or more electrical circuits. It is wired to provide the interconnecting facilities for a specific group of electrical and/or electronic items outside of the interconnecting cabinet. It may contain parts such as capacitors, resistors, fuses, relays and terminal boards. In addition, it includes panel(s) on which are mounted control and instrumenation devices associated with the internal components of the cabinet. For items not including such panels. See CABINET, ELECTRICAL EQUIPMENT. See also CIRCUIT BREAKER BOX; DISTRIBUTION BOX; INTERCONNECTING BOX; JUNCTION BOX and TERMINAL BOX.
What is an Electrical Cable Assembly Protector? 219 Items
An Electrical Cable Assembly Protector (PROTECTOR,ELECTRICAL CABLE ASSEMBLY) is an item specifically designed to protect an electrical cable assembly from damage by other items during assembly and/or disassembly operations of associated equipment. Excludes such items as loom, cotton sleeving, rubber blankets, all types of conduit, INSULATION SLEEVING, ELECTRICAL and PROTECTOR, ELECTRICAL CABLE.
What is an Electrical Components Tie Down Strap? 3678 Items
An Electrical Components Tie Down Strap (STRAP,TIE DOWN,ELECTRICAL COMPONENTS) is a preformed item of flexible or semiflexible material of various cross-sectional shapes. It may be tapered to a point at one or both ends, or provided with holes, slots, detents, or other locking devices. It is designed to surround wiring harnesses and other electrical/electronic components. It may be preprinted with legendary characters, symbol(s), letter(s), numeral(s), or color coded, and may be provided with means for securing to other objects. Excludes BAND, MARKER; CLAMP, ELECTRICAL; CLAMP, LOOP; MARKER, IDENTIFICATION; and STRAP, RETAINING.
What is an Electric Component Rail Guide Stop? 27 Items
An Electric Component Rail Guide Stop (STOP,RAIL GUIDE,ELECTRIC COMPONENT) is a metallic or nonmetallic item or various shapes designed to be attached at the end of a RAIL,GUIDE to prevent movement of electric component. It may include facilities for a pin, set screw, or the like to allow for adjustment.
What is a Raceway End Cap? 11 Items
A Raceway End Cap (END CAP,RACEWAY) is an item which is used to close right and or left side of RACEWAY (WITH MODIFIER).
What is an Electrical Cable Ground Guard? 21 Items
An Electrical Cable Ground Guard (GUARD,GROUND,ELECTRICAL CABLE) is a metallic or nonmetallic item of various shape designed to be placed on floor to protect onr or several electrical cable or cord from damages caused by the personnel vehicular, equipment and the like. Excludes: PROTECTOR,ELECTRICAL CABLE and PROTECTOR,ELECTRICAL CABLE ASSEMBLY.
What is an Electron Tube? 14268 Items
An Electron Tube is an inclosure, including two or more electrodes, in which a flow of electrons may occur through a vacuum or a contained gas. The electronic conduction takes place either by means of electrons emitted from a cathode or by ionization of the contained gas. Includes phototubes (photoemissive type only), Geiger-Mueller tubes, traveling wave tubes, cathode ray tubes and microwave tubes (Klystron, magnetron, or the like). Excludes items whose primary purpose is to produce light energy. Also excludes PHOTOELECTRIC CELL; and SEMICONDUCTOR DEVICE (as modified).
What is a Cathode Ray Tube Visor? 172 Items
A Cathode Ray Tube Visor (VISOR,CATHODE RAY TUBE) is an item specifically designed to be attached around the face of a cathode ray tube to exclude light, thereby aiding visibility of the image.
What is an Electron Tube Case? 27 Items
An Electron Tube Case (CASE,ELECTRON TUBE) is a case specifically designed to hold one or more electron tubes. For cases specifically designed to inclose magnetic items, such as magnetron type electron tubes, for shipping and storage, see CASE, SHIPPING AND STORAGE, MAGNETICALLY SHIELDED.
What is an Electron Tube Coupler? 35 Items
An Electron Tube Coupler (COUPLER,ELECTRON TUBE) is a coupler specifically designed to be inserted between an electron tube, such as a magnetron, and another item, such as a transmission line.
What is an Electron Tube Shield? 1040 Items
An Electron Tube Shield (SHIELD,ELECTRON TUBE) is an item specifically designed to be placed partially or completely around an electron tube for the purpose of shielding against electrical or mechanical interference or physical damage. May include mounting facilities. See also COVER (as modified); HOUSING (as modified) and VISOR (as modified).
What is a Cathode Ray Tube Ion Trap? 13 Items
A Cathode Ray Tube Ion Trap (ION TRAP,CATHODE RAY TUBE) is a magnetic or electromagnetic device designed to be attached to the outer surface of a cathode ray tube for the specific purpose of preventing the negatively charged ions from reaching the luminescent cathode ray tube screen. It is used as a preventative measure against ion screen discoloration.
What is an Electron Tube Retainer? 1070 Items
An Electron Tube Retainer (RETAINER,ELECTRON TUBE) is an item specifically designed to restrain the movement of an electron tube when the latter is mounted in another item, normally a tube socket. Includes clamps, clips, and similar restraining devices specifically designed for this function.
What is a Multiple Electron Tube Shield? 33 Items
A Multiple Electron Tube Shield (SHIELD,ELECTRON TUBE,MULTIPLE) is an item specifically designed to be placed over two or more ELECTRON TUBE for purpose of shielding against electrical and/or mechanical interferences. See also SHIELD, ELECTRON TUBE.
What is a Matched Electron Tubes? 49 Items
A Matched Electron Tubes (ELECTRON TUBES,MATCHED) is a grouping of two or more separate electron tubes which have been matched together for a given characteristic such as transconductance. The matched values must be equal or within a specified tolerance. Includes only those tubes designed and specifically tested to provide a desired function. Excludes transistors, semiconductor devices and electron tubes which may be of an identical type but do not meet the above requirements.
What is an Electron Tube Shield Insert? 108 Items
An Electron Tube Shield Insert (INSERT,ELECTRON TUBE SHIELD) is a metallic item specifically designed to be inserted into a SHIELD, ELECTRON TUBE and to contact the electron tube envelope for the purpose of dissipating heat by conduction to the tube shield.
What is an Interrupter Contact Set? 64 Items
An Interrupter Contact Set (CONTACT SET,INTERRUPTER) is a grouping of two or more separate interrupter contacts. Excludes CONTACT ASSEMBLY, ELECTRICAL.
What is an Electrical Solenoid? 5967 Items
An Electrical Solenoid (SOLENOID,ELECTRICAL) is an item consisting of one or more coils surrounding an iron core. The coil(s) and the core are moveable in relation to each other. The axial or rotary movement is a result of the magnetic flux of the coil. It is designed to convert electrical energy into mechanical energy. It does not include switch contacts. See also RELAY, ELECTROMAGNETIC, and ELECTROMAGNETIC ACTUATOR.
What is a Relay Assembly? 4159 Items
A Relay Assembly is two or more RELAYS (as modified) having a common mounting or mounted on each other. If item contains electronic components see ELECTRONIC COMPONENT ASSEMBLY. Excludes AMPLIFIER-RELAY ASSEMBLY; RELAY ASSEMBLY GROUP; and RELAY-SWITCH.
What is a Relay Subassembly? 377 Items
A Relay Subassembly is two or more different types of items having a common mounting or mounted on each other, which together form a portion of a relay, but which in itself is not a complete functioning item and cannot be assigned a more definite item name. Excludes CONTACT ASSEMBLY, ELECTRICAL and CONTACT SET, RELAY.
What is an Electromagnetic Actuator Subassembly? 56 Items
An Electromagnetic Actuator Subassembly is two or more different types of items, having a common mounting or mounted on each other, which together form a portion of an ELECTROMAGNETIC ACTUATOR, but which in itself is not a complete functioning item and cannot be assigned a more definite item name.
What is an Electromagnetic Actuator? 354 Items
An Electromagnetic Actuator is an item which develops mechanical energy as a result of momentary or intermittent impulses in a Coil (1) or ELECTROMAGNET and which is used to operate such items as a ratchet or signaling device. For items having a core axially set within a coil and in which the coil and core move with respect to each other, see SOLENOID, ELECTRICAL. See also MOTOR (as modified) and ANNUNCIATOR.
What is an Armature Stop? 89 Items
An Armature Stop (STOP,ARMATURE) is an item designed to check the movement or action of an armature.
What is an Interlock Control? 180 Items
An Interlock Control (CONTROL,INTERLOCK) is a device that determines the mode of operation of an interlock system.
What is a Motor Driven Relay? 498 Items
A Motor Driven Relay (RELAY,MOTOR DRIVEN) is a relay which is actuated by an electrical motor and automatically resets upon interruption of supply current to the relay. Does not include a "switch" that is motor driven.
What is a Thermal Relay? 4835 Items
A Thermal Relay (RELAY,THERMAL) is a relay switch which is actuated by the effect of internal heat generated by the current in its energizing circuit. For items actuated by ambient, rather than internal temperature changes, see SWITCH, THERMOSTATIC.
What is a Meter Movement Relay? 267 Items
A Meter Movement Relay (RELAY,METER MOVEMENT) is a relay which operates by means of a D'Arsonval or similar meter type actuation.
What is a Rotary Relay? 488 Items
A Rotary Relay (RELAY,ROTARY) is a relay whose contact arm may rotate through 360 degrees but not in one operation. Includes rotary relays which automatically reset. For an item having the dual functions of a switch and a relay assembled together on a common mounting, see RELAY-SWITCH. Excludes SWITCH, ROTARY; SWITCH, STEPPING; and SWITCH, TELEPHONE (as modified).
What is a Solenoid Assembly? 461 Items
A Solenoid Assembly is two or more SOLENOID, ELECTRICAL on a common mounting or mounted on each other.
What is a Thermal Flasher? 698 Items
A Thermal Flasher (FLASHER,THERMAL) is an item designed to complete, interrupt or change the connections in one or more electrical lighting circuits in accordance with a predetermined time cycle. It is actuated by the effect of heat generated by current passing through its circuit(s). Excludes CONTROL, DIRECTIONAL SIGNAL LIGHT, AUTOMOTIVE, and SWITCH THERMOSTATIC. See also FLASHER, SOLID STATE.
What is an Electromagnetic Actuator Armature? 106 Items
An Electromagnetic Actuator Armature (ARMATURE,ELECTROMAGNETIC ACTUATOR) is an item which is the pivoted or spring-mounted iron portion of an electromagnetic actuator and which transmits mechanical energy to another item.
What is an Induction Coil Armature? 56 Items
An Induction Coil Armature (ARMATURE,INDUCTION COIL) is an item which is the pivoted or spring-mounted ferromagnetic portion of an induction coil, and which moves to break and/or make an electrical circuit in response to electromagnetic changes.
What is a Relay Armature? 454 Items
A Relay Armature (ARMATURE,RELAY) is an item which is the pivoted or spring-mounted ferromagnetic portion of a relay, and which moves to break and/or make an electrical circuit in response to electromagnetic changes.
What is a Relay Contact Set? 469 Items
A Relay Contact Set (CONTACT SET,RELAY) is a grouping of two or more separate relay contacts.
BRACKET,SOLENOID 223 Items
COVER,ELECTRICAL RELAY 333 Items
LINK,SOLENOID 49 Items
What is an Electronic Chopper? 360 Items
An Electronic Chopper (CHOPPER,ELECTRONIC) is an electromechanical or electronic (includes solid state semiconductor items) device designed to convert an electrical signal into a modified square wave output signal. For items excited by an alternating current, the output signal is the same frequency as, and bears a definite phase relationship to, the excitation voltage. For those electronic items designed to operate on direct current only, the output frequency of the item is dependent upon the inherent properties of the item, or the internal or external circuit constants, or the applied driving coil voltage impressed on the input signal. For an electromechanical item whose coil is designed for direct current only, see VIBRATOR, INTERRUPTER and VIBRATOR, SELF-RECTIFYING.
What is a Solenoid Plunger? 556 Items
A Solenoid Plunger (PLUNGER,SOLENOID) is a metallic item used as a core which reacts to the magnetic flux produced by a surrounding electrical coil(s). It travels on a longitudinal plane with reciprocating motion to perform a mechanical function. It may have facilities for attaching mechanical and/or electrical items such as linkage and/or contacts. It is a maintenance part for such items as RELAY, SOLENOID; RELAY-SOLENOID, ENGINE STARTER, ELECTRICAL; and SOLENOID, ELECTRICAL.
BASE,ELECTRICAL RELAY 1124 Items
What is a Resonant Reed Relay? 97 Items
A Resonant Reed Relay (RELAY,RESONANT REED) is an item consisting of one or more metallic reeds, mechanically resonant at a specific frequency and mounted in a permanent magnetic field. Actuation of the relay occurs when an alternating current signal at the resonant frequency of one of the reeds is introduced into a field winding. Excludes RELAY, ELECTROMAGNETIC.
What is a Reed Relay? 2297 Items
A Reed Relay (RELAY,REED) is a relay consisting of an energizing coil and a metallic reed switch mechanism. The reeds serve as both core and contacts, which are not hinged or pivoted and which move by flexure when acted upon by a magnetic field induced by energization of the coil. It may also include a biasing magnet. The biasing magnet, either aids or opposes the movement of the reeds and the opening or closing of the contacts. For items in which actuation is dependent on the resonant frequency of the reeds see RELAY, RESONANT REED. Excludes RELAY, ELECTROMAGNETIC.
What is a Hybrid Relay? 1693 Items
A Hybrid Relay (RELAY,HYBRID) is a self-contained device that performs the function of opening or closing an electrical circuit in response to electrical changes in an external circuit. It consists of a combination of semiconductor and passive circuit devices, which in turn control an integral electro-magnetic relay. Excludes relays which employ diodes, rectifiers or other passive devices to achieve contact protection or coil modification. Excludes RELAY, SOLID STATE.
What is a Solid State Relay? 3242 Items
A Solid State Relay (RELAY,SOLID STATE) is a self-contained device that performs the function of opening or closing an electrical circuit in response to electrical changes in an external circuit. In lieu of separable contacts and their actuator(s), the switching function is accomplished by means of an arrangement of semiconductors and passive circuit devices. The device is designed to have electrical isolation between control circuit and output circuit. Excludes RELAY, HYBRID.
What is an Electromagnetic Relay? 52744 Items
An Electromagnetic Relay (RELAY,ELECTROMAGNETIC) is a relay which is actuated by the effect of a magnetic field developed by the current in its energizing coil(s). Includes solenoid and armature types. Excludes CONTACTOR, MAGNETIC; RELAY, METER MOVEMENT; RELAY, MOTOR DRIVEN; RELAY, REED; RELAY, RESONANT REED; RELAY, ROTARY; and SWITCH, STEPPING.
PARTS KIT,SOLENOID PLUNGER 22 Items
What is a Solid State Flasher? 437 Items
A Solid State Flasher (FLASHER,SOLID STATE) is an item designed to complete, interrupt or change the connections in one or more electrical lighting circuits in accordance with a predetermined time cycle. It is actuated by means of an arrangement of semiconductors and/or passive circuit devices. Excludes CONTROL, DIRECTIONAL SIGNAL LIGHT, AUTOMOTIVE and SWITCH THERMOSTATIC. See also FLASHER, THERMAL.
What is a Mounting Plate? 715 Items
A Mounting Plate (PLATE,MOUNTING) is a metallic or nonmetallic item which is rigid, flat and generally smooth. Its thickness is small in comparison to its length and width. It is designed for mounting another item and may have drilled or threaded holes or other facilities for mounting to a supporting object or surface. See SUPPORT, as modified. Do not use if a more specific name applies.
What is an Electrical And Electronic Equipment Modification Kit? 261 Items
An Electrical And Electronic Equipment Modification Kit (MODIFICATION KIT,ELECTRICAL AND ELECTRONIC EQUIPMENT) is an item or collection of items employed to modify electrical and electronic equipment.
What is a Relay Assembly Group? 386 Items
A Relay Assembly Group is a group that provides facilities for switching and controlling components of an electronic set, by means of relays and associated components that are in turn programmed by signals derived from another component(s).
What is an Electrical Relay Retainer? 650 Items
An Electrical Relay Retainer (RETAINER,ELECTRICAL RELAY) is an item specifically designed to position and/or restrain the movement of one or more electrical relays in their normal mounting position. It may also include provisions for mounting terminal boards, connectors, and like items. Excludes CLIP, ELECTRICAL and CLAMP, LOOP.
What is a Solenoid Subassembly? 25 Items
A Solenoid Subassembly is two or more different types of items, which together form a portion of a SOLENOID, ELECTRICAL. These items have a common mounting or are mounted on each other, but do not form a complete functioning item and therefore cannot be assigned a more definite name.
What is a Control-Monitoring Relay? 126 Items
A Control-Monitoring Relay (RELAY,CONTROL-MONITORING) is an electronic relay that manages simple automation systems. It may be directly programmed using front panel and pushbutton, or operate by remote controlby addition of communication or connection interface. It may be easily upgraded for enhanced performance by adding various extensions for communication networks or for increasing the number or inputs/outputs.
What is a Control-Monitoring Relay Expander Module? 28 Items
A Control-Monitoring Relay Expander Module (EXPANDER MODULE,RELAY,CONTROL-MONITORING) is an auxillary component used to increase the communication capabilities and/or number of discrete inputs/outputs of the RELAY, CONTROL MONITORING. It may be mounted and wired next to relay or plug into the relay.
What is a Demagnetizer? 71 Items
A Demagnetizer is an item specifically designed to remove magnetism from another item. For items specifically designed to disorientate the magnetic signal induced on tape or wire in preparation for the recording of another signal, see ERASER, MAGNETIC.
What is a Magnet Charger? 22 Items
A Magnet Charger (CHARGER,MAGNET) is an item specifically designed to restore or establish the field strength of a permanent magnet by energizing it with an electrical current.
What is a Pulse Transformer? 4608 Items
A Pulse Transformer (TRANSFORMER,PULSE) is a transformer designed to transfer pulses of nonsinusoidal wave forms between circuits without basically changing the wave forms.
What is an Electrical Goniometer? 87 Items
An Electrical Goniometer (GONIOMETER,ELECTRICAL) is an item designed to calculate and resolve, continuously and electrically, mathematical problems or electrical functions, and to establish directional phase differences between two transmitted or received signals. Two windings are crossed and fixed at a 90 degree angle; the third winding is rotatable with respect to the other windings. Excludes RESOLVER, ELECTRICAL; and SYNCHRO (as advised).
What is a Radio Frequency Coil Assembly? 642 Items
A Radio Frequency Coil Assembly (COIL ASSEMBLY,RADIO FREQUENCY) is two or more coils on a common mounting or mounted on each other. Excludes items inductively coupled.
What is a Transformer Assembly? 1540 Items
A Transformer Assembly is two or more separable TRANSFORMER (as modified) on a common mounting or mounted on each other.
What is a Potential Transformer? 903 Items
A Potential Transformer (TRANSFORMER,POTENTIAL) is a transformer designed to connect an electrical instrument to a power line or other high potential alternating current source for the purpose of voltage measurement or control.
What is a Coil Form? 688 Items
A Coil Form (FORM,COIL) is an item specifically designed to form the foundation on which a coil is wound.
COVER,COIL 120 Items
COVER,ELECTRICAL TRANSFORMER 140 Items
What is a Reactor? 22211 Items
A Reactor is a coil or coils usually constructed with cores having low magnetic reluctance, whose primary purpose is to furnish an inductive impedance in power or audio frequency circuit ranging from zero to 20 kilohertz (kilocycles). Includes audio frequency and power filter chokes, audio reactors and swinging chokes. Does not include transformers or coils used above audio frequency range. Excludes SATURABLE REACTOR. For reactors with air cores, see COIL (as modified).
What is a Current Transformer? 6580 Items
A Current Transformer (TRANSFORMER,CURRENT) is an item consisting of one or more windings, designed to be placed near or connected in series with an alternating current power line to measure the current passing through the line by means of a meter; or to control the current passing through the line by means of a control device. Excludes TRANSFORMER, POWER, CURRENT REGULATING.
What is a Radio Frequency Transformer? 17892 Items
A Radio Frequency Transformer (TRANSFORMER,RADIO FREQUENCY) is an item having either a single tapped winding (autotransformer type), or two or more windings designed to furnish inductive reactance and/or transfer electrical energy in circuits by means of a magnetic field. It is so designed that its entire intended range of operations is above 20 Kilohertz (Kilocycles). The minimum value may extend into the audio frequency range (below 20 Kilohertz). It may include integral capacitors, coils, resistors, and adjustable tuning cores. For items having only two active terminals see COIL, RADIO FREQUENCY. Includes types having windings which may be moved with respect to each other. Excludes TRANSFORMER, DISCRIMINATOR.
What is an Audio Frequency Transformer? 12169 Items
An Audio Frequency Transformer (TRANSFORMER,AUDIO FREQUENCY) is a transformer which is designed so that part or all of its range of operating frequencies is 20 kilohertz (kilocycles) and below. The maximum value may extend into the radio frequency range. It is generally used in the input, output, amplifier, or oscillator stages of audio and sonar devices.
What is a Vibrator Power Transformer? 173 Items
A Vibrator Power Transformer (TRANSFORMER,POWER,VIBRATOR) is a transformer consisting of two or more windings designed for use with a vibrator for stepping up or down pulsating direct current voltages. May also have provisions for alternating current input voltages. Excludes TRANSFORMER, PULSE.
What is a Coil Shield? 172 Items
A Coil Shield (SHIELD,COIL) is an item specifically designed to be placed around a coil for the purpose of shielding against electrical or mechanical interference. May include mounting facilities. See also COVER (as modified); HOUSING (as modified) and VISOR (as modified).
What is an Electromagnet? 1257 Items
An Electromagnet is a winding with a soft, laminated, or pressed powdered iron core, which generates an extremely strong field of magnetic force when current is passed through the winding. The field dissipates almost completely when the current is interrupted. For electric magnets used for lifting, see MAGNET, LIFTING, ELECTRIC.
What is a Reactor-Transformer? 281 Items
A Reactor-Transformer is a component consisting of two or more electrically distinct items. One or more items are made of one or more coils which function as a reactor; at least one other item is made of a tapped coil or two or more coils which function as a transformer. The items may have a common core, but are not magnetically coupled.
What is a Radio Frequency Coil? 41070 Items
A Radio Frequency Coil (COIL,RADIO FREQUENCY) is an item consisting of a partial turn as one or more turns of wire or other conductive material which constitutes one continuous untapped winding. It may be wound or formed in other than a circular manner and may be self-supporting, requiring no coil form. It is specifically designed to furnish inductive reactance in a circuit carrying radio frequency current ranging from 20 kilohertz (kilocycles) and above. It may include tuning devices, integral resistors and capacitors; however, excludes FILTER (as modified). The coil has only two electrical terminals. For items having tapped winding or more than one winding - see TRANSFORMER, RADIO FREQUENCY. For coils wound on resistors, which are designed to be inserted in the circuit of a radio frequency stage to suppress high frequency parasitic oscillations, see SUPPRESSOR, PARASITIC.
What is a Coil Case? 49 Items
A Coil Case (CASE,COIL) is a case specifically designed to hold one or more coils.
What is a Saturable Reactor? 672 Items
A Saturable Reactor is an item whose inductance value is controlled by electrical means. It depends on the action of the electromagnet flux produced by the control winding upon the effective permeability of the core. It contains two or more windings, at least one of which must be a control winding. For items designed to be used in conjunction with a rectifier(s) for amplification purposes, see AMPLIFIER, MAGNETIC.
What is a Discriminator Transformer? 390 Items
A Discriminator Transformer (TRANSFORMER,DISCRIMINATOR) is a transformer designed to be used in a stage where frequency modulation signals are converted directly to audio frequency signals or in a stage where frequency changes are converted to corresponding voltage changes. May include capacitors, resistors and/or coils as integral parts.
What is a Transformer Set? 79 Items
A Transformer Set is a grouping of two or more individual TRANSFORMER (as modified). Includes matched pairs. For items which are mounted on a common mounting or mounted on each other, see TRANSFORMER ASSEMBLY.
CASE,ELECTRICAL TRANSFORMER 65 Items
What is an Electrical Coil? 17263 Items
An Electrical Coil (COIL,ELECTRICAL) is an item generally consisting of one or more turns of wire or similar conductive material (in special cases it may be considered as a partial turn). It is specifically designed to concentrate magnetic flux generated by the flow of an electric current, to induce in itself an electromotive force, and to add or subtract inductive reactance in a circuit. It may include tuning devices, integral resistors and capacitors; however, excludes FILTER (as modified). For coils wound on resistors which are designed to be inserted into the circuit of a radio frequency stage to suppress high frequency parasitic oscillations, see SUPPRESSOR, PARASITIC..
What is a Telephone Coil? 254 Items
A Telephone Coil (COIL,TELEPHONE) is an item consisting of one or more turns of wire or similar conductive material. It is specifically designed for use in telephone circuitry for reducing cross talk by balancing capacitances, or impedance matching or providing inductive reactance for overcoming inherent capacitance, or inductive coupling where direct coupling is undesirable or discriminating against the flow of alternating current in favor of direct current.
What is a Power Transformer? 55475 Items
A Power Transformer (TRANSFORMER,POWER) is a transformer consisting of one or more primary winding(s) and one or more secondary winding(s). It may be designed for direct connection to an alternating current source for purposes of changing the secondary volts and amperes or designed to eliminate metallic interconnection between circuits in an overall one to one voltage ratio, with or without additional output windings, or items designed to automatically maintain a constant output voltage within specified limits under varying input or load conditions. Also includes items having a provision for mechanically changing the turns ratio or inductive coupling in progressive increments by means of voltage taps, ratio adjuster, or devices oe similar design. For transformers having winding(s) common to both input and output circuits, see TRANSFORMER (1), POWER, AUTOTRANSFORMER. Excludes TRANSFORMER (1), PULSE.
What is a Power Autotransformer Transformer? 2083 Items
A Power Autotransformer Transformer (TRANSFORMER,POWER AUTOTRANSFORMER) is a transformer which incorporates the primary and secondary functions into a single winding, which is common to both input and output circuits, and is designed to change the relationship of volts and amperes between the entire winding and its taps. Includes multiple winding transformers of like design and items in which a variation of the turns ratio or inductive ratio of inductive coupling is accomplished by connection to fixed terminals. Also, includes items having a provision for mechanically changing the turns ratio in progressive increments, by means of a shaft, voltage taps, ratio adjuster, or devices of similar design. Excludes TRANSFORMER (1), POWER; TRANSFORMER (1), PULSE.
What is an Electrical Coil Assembly? 762 Items
An Electrical Coil Assembly (COIL ASSEMBLY,ELECTRICAL) is two or more COIL, ELECTRICAL on a common mounting or mounted on each other. Excludes items inductively coupled. For items inductively coupled, see TRANSFORMER (as modified).
What is a Mounting Plate? 715 Items
A Mounting Plate (PLATE,MOUNTING) is a metallic or nonmetallic item which is rigid, flat and generally smooth. Its thickness is small in comparison to its length and width. It is designed for mounting another item and may have drilled or threaded holes or other facilities for mounting to a supporting object or surface. See SUPPORT, as modified. Do not use if a more specific name applies.
What is a Transformer Shield? 40 Items
A Transformer Shield (SHIELD,TRANSFORMER) is an item specifically designed to be placed around or over one or more TRANSFORMER (as modified) in order to prevent or reduce electrical and/or mechanical interference.
What is an Electromagnetic Component Core? 1479 Items
An Electromagnetic Component Core (CORE,ELECTROMAGNETIC COMPONENT) is a solid or assembled item made of ferromagnetic material and designed to be used for the construction of a COIL (as modified), a TRANSFORMER (as modified), a REACTOR (as modified) or a ELECTROMAGNET. the item increases the magnetic flux within those components.
What is a Synchro Overload Transformer? 28 Items
A Synchro Overload Transformer (TRANSFORMER,SYNCHRO OVERLOAD) is a transformer consisting of two or more windings specifically designed for use in synchro systems with an external indicator for the detection of overloads. May include rectifiers, resistors and/or capacitors as integral parts.
What is an Electronic Shielding Bead? 786 Items
An Electronic Shielding Bead (SHIELDING BEAD,ELECTRONIC) is a high permeability item designed to be threaded on the supply leads of electronic items for the purpose of damping parasitic resonances. See also SUPPRESSOR, PARASITIC.
What is a Telephone Dummy Plug? 68 Items
A Telephone Dummy Plug (DUMMY PLUG,TELEPHONE) is an item designed to be inserted into a JACK, TELEPHONE for the purpose of shorting, loading, or to occupy the space of a PLUG, TELEPHONE. It is not designed for direct attachment to a cable, conduit, or wire, and cannot be used as a PLUG, TELEPHONE.
What is a Telephone Jack Assembly? 213 Items
A Telephone Jack Assembly (JACK ASSEMBLY,TELEPHONE) is an item consisting of two or more telephone jacks on a common mounting or mounted on each other. May include wiring or associated parts such as designation strips. Connection to related circuitry is not automatic with mounting. For items which connect to related circuitry automatically, see TELEPHONE CIRCUIT, LINE JACK.
What is a Telephone Jack? 1282 Items
A Telephone Jack (JACK,TELEPHONE) is a contact spring type electrical fitting of two or more conductors, which is arranged for the insertion of a PLUG, TELEPHONE. One conductor may be grounded. Does not include separable telephone jacks which are termed, JACK ASSEMBLY, TELEPHONE. Excludes JACK, TIP.
What is a Telephone Plug? 507 Items
A Telephone Plug (PLUG,TELEPHONE) is a concentric type electrical fitting consisting of two or more conductors on a common shank. The contacts on two or three conductor plugs are termed sleeve, tip, or ring. It includes multiple shank plugs of this type. Excludes PLUG, TIP.
What is an Indicator Adapter? 101 Items
An Indicator Adapter (ADAPTER,INDICATOR) is an adapter which permits a remote indicator to be connected to an electronic set with which it was not normally intended to be used. Do not use if a more specific name exists. See also COUPLER (as modified).
COVER,TELEPHONE JACK ASSEMBLY 14 Items
What is an Electrical Plug Connector? 111300 Items
An Electrical Plug Connector (CONNECTOR,PLUG,ELECTRICAL) is an electrical fitting with electrical contacts, constructed to be affixed to the end of a cable, conduit, coaxial line, cord or wiring for convenience in joining with other electrical connector(s) or PRINTED WIRING BOARD and is not designed to be mounted on a bulkhead, chasses, panel, PRINTED WIRING BOARD, or the like. Excludes JACK, TELEPHONE; JACK, TIP; PLUG, TELEPHONE; PLUG TIP; INSERT, ELECTRICAL CONNECTOR; CONNECTOR BODY (as modified); and SOCKET, PLUG-IN, ELECTRONIC COMPONENTS. See also LEAD ASSEMBLY, ELECTRICAL; WIRING HARNESS (as modified); and CABLE ASSEMBLY (as modified). For items without inserts, see SHELL, ELECTRICAL CONNECTOR.
What is a Telephone Jack Assembly Shell? 32 Items
A Telephone Jack Assembly Shell (SHELL,TELEPHONE JACK ASSEMBLY) is the inclosing case which houses the electrical elements of a telephone jack assembly.
What is an Electrical Connector Retainer? 1849 Items
An Electrical Connector Retainer (RETAINER,ELECTRICAL CONNECTOR) is an item specifically designed to restrain the movement of an electrical connector, when the latter is mounted in another item. Includes clamps, clips, and similar restraining devices specifically designed for this function. Excludes CLIP, ELECTRICAL and CLAMP, LOOP.
What is a Connector To Lamp Base Adapter? 29 Items
A Connector To Lamp Base Adapter (ADAPTER,CONNECTOR TO LAMP BASE) is an electrical fitting designed to connect one or more lamps or lampbases to an electrical CONNECTOR (as modified). May include integral switch or side wire outlet. Excludes ADAPTER, LAMPHOLDER TO CONNECTOR.
What is a Lampholder To Connector Adapter? 37 Items
A Lampholder To Connector Adapter (ADAPTER,LAMPHOLDER TO CONNECTOR) is an electrical fitting designed to provide the necessary accommodations to attach a LAMPHOLDER to one or more electrical CONNECTOR (as modified). May include a fuse and/or integral switch; may also accommodate one or more LAMP (as modified). Excludes ADAPTER, CONNECTOR TO LAMPBASE.
What is a Tip Plug? 1992 Items
A Tip Plug (PLUG,TIP) is a banana or pin type termination applied to the end of a single electrical conductor and designed to be inserted in a jack or binding post. May be insulated or uninsulated. Excludes TIP, TEST PROD and PLUG, TELEPHONE.
What is an Electrical Connector Cover? 15158 Items
An Electrical Connector Cover (COVER,ELECTRICAL CONNECTOR) is a device specifically designed to fully or partially inclose an electrical connector to protect its mating end from mechanical damage. Excludes CAP, ELECTRICAL; CAP, PROTECTIVE, DUST AND MOISTURE SEAL; and GUARD, ELECTRICAL CONNECTOR. See also COVER AND GUARD, ELECTRICAL CONNECTOR; SHELL, ELECTRICAL CONNECTOR; and SHIELD, ELECTRICAL CONNECTOR.
What is a Tip Jack? 4460 Items
A Tip Jack (JACK,TIP) is an electrical fitting with a female contact arranged for the insertion of a PLUG, TIP or a TIP, TEST PROD. It has a single facility for attachment of a conductor or facility for circuit connection through its mounting provisions. The item may or may not be insulated. Excludes multisection types each section of which consists of a single contact spring or telephone-type jack. Excludes CONNECTOR, RECEPTACLE ELECTRICAL; JACK, TELEPHONE; JACK ASSEMBLY, TIP; and POST, BINDING.
What is a Tip Jack Assembly? 226 Items
A Tip Jack Assembly (JACK ASSEMBLY,TIP) is two or more JACK, TIP on a common mounting. The jacks must be separable and capable of operating individually. For items in which the jacks are inseparable, see CONNECTOR, RECEPTACLE, ELECTRICAL.
What is a Tip Plug Assembly? 108 Items
A Tip Plug Assembly (PLUG ASSEMBLY,TIP) is an item consisting of two or more PLUG, TIP on a common mounting. The plugs must be separable and capable of operating individually. For items in which the plugs are inseparable, see CONNECTOR (as modified).
What is a Connector Adapter? 13210 Items
A Connector Adapter (ADAPTER,CONNECTOR) is an adapter with electrical contacts which provides facilities for joining two or more electrical connectors, whose design or function will not normally warrant their junction.It is not designed for permanent attachment to a cable, cord, coaxial line, or wire.The physical shape of an electrical connector should not be the determining factor of its name.Tee, angle, straight, and Y-shaped adapters are all ADAPTER, CONNECTOR.Excludes ADAPTER, CONNECTOR TO LAMPBASE; ADAPTER, LAMPHOLDER TO CONNECTOR; ADAPTER (1), CABLE CLAMP TO CONNECTOR; and ADAPTER, LAMPHOLDER.For items designed as a mechanical connection between an electrical conduit and an electrical connector, see ADAPTER (1), ELECTRICAL CONDUIT.
What is a Receptacle Dummy Connector? 1669 Items
A Receptacle Dummy Connector (DUMMY CONNECTOR,RECEPTACLE) is an item specifically designed to mate with a plug connector to perform one or more special functions, such as to support a plug connector when not in use, short contacts, or open or close electrical circuits, in or on another connector. It does not have provisions for attaching a wire, cable, or contact. It is designed to mount on a panel, bulkhead, wall, or chassis. It does not include connector shells which are merely used to position a plug connector on a panel.
What is an Electrical Receptacle Connector? 143006 Items
An Electrical Receptacle Connector (CONNECTOR,RECEPTACLE,ELECTRICAL) is an electrical fitting with electrical contacts constructed to be affixed to the end of a cable, conduit, coaxial line, cord, wire (includes printed/etched), PRINTED WIRING BOARD, or the like for convenience in joining with another electrical connector(s) or PRINTED WIRING BOARD. It is designed to be mounted on a bulkhead, chassis, panel, wall, PRINTED WIRING BOARD, or the like. Excludes LAMPHOLDER; JACK, TELEPHONE; JACK, TIP; INSERT ELECTRICAL CONNECTOR; INSERT MODULE, ELECTRICAL CONNECTOR; CONNECTOR BODY (as modified) and SOCKET, PLUG-IN ELECTRONIC COMPONENTS. See also WIRING HARNESS (as modified) and CABLE ASSEMBLY (as modified). For items with termination wires of more than four inches in length, see LEAD ASSEMBLY, ELECTRICAL. For items without inserts, see SHELL, ELECTRICAL CONNECTOR.
What is a Plug Dummy Connector? 5705 Items
A Plug Dummy Connector (DUMMY CONNECTOR,PLUG) is an item specifically designed to mate with another connector to perform one or more special functions, such as to act as a cover or shield, to short contacts, or to open or close electrical circuits, in or on another connector. It cannot be used as a CONNECTOR, PLUG, ELECTRICAL. Excludes DUMMY PLUG,TELEPHONE.
What is a Jack Box? 334 Items
A Jack Box is an enclosure which includes, mounts, and protects one or more jacks. It is designed for and may include the cover and such accessories as mounting hardware, brackets, locks, and conduit fittings. May include terminal boards specifically used as a convenience for terminating the jacks. For boxes which include combinations of different electrical devices such as switches, fuseholders, jacks, circuit breakers, terminal boards and the like, see DISTRIBUTION BOX. For boxes which are designed to mount, but which do not include jacks, see JUNCTION BOX.
What is an Electrical Connector Set? 1280 Items
An Electrical Connector Set (CONNECTOR SET,ELECTRICAL) is two or more separate CONNECTOR, PLUG, ELECTRICAL; CONNECTOR, RECEPTACLE, ELECTRICAL; ADAPTER, CONNECTOR; JACK, TELEPHONE; JACK, TIP; PLUG, TELEPHONE; PLUG, TIP; DUMMY CONNECTOR, PLUG; or DUMMY CONNECTOR, RECEPTACLE designed to be mated together. The set may include connectors of different item name mated together, such as one CONNECTOR, PLUG, ELECTRICAL and one DUMMY CONNECTOR, RECEPTACLE; or one DUMMY CONNECTOR, PLUG and one CONNECTOR, RECEPTACLE, ELECTRICAL. Excludes CONNECTOR ASSEMBLY, ELECTRICAL; DUMMY CONNECTOR SET, ELECTRICAL; JACK ASSEMBLY, TELEPHONE; JACK ASSEMBLY, TIP; and PLUG ASSEMBLY, TIP.
What is an Electrical Dummy Connector Set? 43 Items
An Electrical Dummy Connector Set (DUMMY CONNECTOR SET,ELECTRICAL) is a grouping of two or more separate DUMMY CONNECTOR, PLUG and/or DUMMY CONNECTOR, RECEPTACLE. Includes matched or mated pairs. Excludes DUMMY CONNECTOR ASSEMBLY, ELECTRICAL.
What is an Electrical Connector Bushing Retainer Nut? 521 Items
An Electrical Connector Bushing Retainer Nut (NUT,BUSHING RETAINER,ELECTRICAL CONNECTOR) is a metallic item having internal threads and an internal seat designed to retain and compress a resilient sealing medium such as a backing grommet or bushing in the shell of an electrical connector. For items which may perform the same function but have a facility for attachment of another fitting(s) see ADAPTER, CABLE CLAMP TO CONNECTOR. See also PACKING NUT; and PACKING NUT, STUFFING TUBE.
What is an Electron Tube Connector? 107 Items
An Electron Tube Connector (CONNECTOR,ELECTRON TUBE) is an electrical fitting designed to be attached to the grid and/or plate connections of an electron tube by integral fastening devices (e. g., setscrew) to provide electrical connection and heat dissipating facilities. Excludes items which affix the tube elements by spring action of the body. See also CLIP, ELECTRICAL. Excludes CONTACT, ELECTRICAL and CLAMP, ELECTRICAL.
What is an Electrical Connector Retaining Plate? 4452 Items
An Electrical Connector Retaining Plate (PLATE,RETAINING,ELECTRICAL CONNECTOR) is a flat metallic item varied in shape with an opening(s) to accommodate an electrical connector(s). It must have facilities for mounting. Used to position an electrical connector. See also PLATE, MOUNTING (as modified). Excludes PLATE, WALL, ELECTRICAL and ESCUTCHEON PLATE.
What is an Electrical Connector Potting Mold? 352 Items
An Electrical Connector Potting Mold (MOLD,POTTING,ELECTRICAL CONNECTOR) is an item, solid or split, designed to be used as a hollow form into which potting compound is injected and allowed to cure or set to seal the back of an electrical connector. The potting eliminates the need for a back shell of the connector. The form may or may not be removable after potting. See also SHIELD, ELECTRICAL CONNECTOR.
What is an Electrical Connector Assembly? 5730 Items
An Electrical Connector Assembly (CONNECTOR ASSEMBLY,ELECTRICAL) is two or more CONNECTOR, PLUG, ELECTRICAL; CONNECTOR, RECEPTACLE, ELECTRICAL; ADAPTER, CONNECTOR; JACK, TELEPHONE; JACK, TIP; PLUG, TELEPHONE; PLUG, TIP; DUMMY CONNECTOR, PLUG; or DUMMY CONNECTOR, RECEPTACLE in any combination, having a common mounting or mounted on each other, each one capable of being independently replaced. It may be interconnected by means of wire or solder bridgings. For items furnished as mated pairs or sets, see CONNECTOR SET, ELECTRICAL. Excludes DUMMY CONNECTOR SET, ELECTRICAL; JACK ASSEMBLY, TELEPHONE; JACK ASSEMBLY, TIP; PLUG ASSEMBLY, TIP; and CABLE ASSEMBLY (as modified).
What is an Electrical Dummy Connector Assembly? 214 Items
An Electrical Dummy Connector Assembly (DUMMY CONNECTOR ASSEMBLY,ELECTRICAL) is two or more DUMMY CONNECTOR, PLUG and/or DUMMY CONNECTOR, RECEPTACLE having a common mounting or mounted on each other. Each component is capable of being independently replaced. Excludes DUMMY CONNECTOR SET, ELECTRICAL and items furnished as matched or mated pairs.
What is an Electrical Connector Cable Clamp? 5870 Items
An Electrical Connector Cable Clamp (CLAMP,CABLE,ELECTRICAL CONNECTOR) is a clamp specifically designed to hold an electrical cable firmly in a connector. Must include provisions for attachment to an electrical connector. Excludes ADAPTER (1), CABLE TO CONNECTOR.
What is an Electrical Connector Guard? 571 Items
An Electrical Connector Guard (GUARD,ELECTRICAL CONNECTOR) is an item specifically designed to prevent damage to the mating end of an electrical connector. The contacts of the connector mating end are left exposed for connection. Excludes COVER, ELECTRICAL CONNECTOR. See also COVER AND GUARD, ELECTRICAL CONNECTOR.
What is an Electrical Connector End Seal Plug? 785 Items
An Electrical Connector End Seal Plug (PLUG,END SEAL,ELECTRICAL CONNECTOR) is a small, thin, cylindrically shaped item having a straight, smooth, solid, nonmetallic body. It may have a boss on one or both ends. It is specifically designed for sealing contact holes against moisture, dust, and the like, in electrical connectors. Excludes PLUG, END SEAL, ELECTRICAL CONDUIT; and PIN, STRAIGHT, HEADLESS.
MAINTENANCE KIT,ELECTRICAL CONNECTOR 1031 Items
What is a Plug-In Electronic Components Socket? 11835 Items
A Plug-In Electronic Components Socket (SOCKET,PLUG-IN ELECTRONIC COMPONENTS) is an item designed to electrically connect and mechanically position the base of an item having plug-in-type contacts, and to facilitate replacement of the item accommodated. It includes sockets which accommodate the contacts of capacitors, coils, crystals, electron tubes, relays, semiconductor devices and vibrators. Excludes sockets or receptacles designed to accommodate plug-in component circuit boards (printed circuit boards) and electronic modules or sub-assemblies. Also excludes heat-dissipating (not heat-sinks) sockets for mounting "power transistors".
What is a Plug-In Electronic Components Socket Strap Nut? 678 Items
A Plug-In Electronic Components Socket Strap Nut (STRAP NUT,PLUG-IN ELECTRONIC COMPONENTS SOCKET) is a fastening device used in assembling and mounting SOCKET, PLUG-IN ELECTRONIC COMPONENTS to a chassis. It is made in one piece with tapped mounting holes spaced to coincide with the spacing of standard electronic plug-in components socket mounting holes. It is semicircular shaped to provide electrical contact clearance of the socket.
What is a Nonplug-In Electronic Components Socket? 1090 Items
A Nonplug-In Electronic Components Socket (SOCKET,NONPLUG-IN ELECTRONIC COMPONENTS) is a device under the form of a plate or having a complex geometric form, in an isolating or non-isolating material. It is designed to electrically connect and mechanically position either by welding or by fastening made with the help of clamps, studs, nuts, and the like, an electrical or electronic component which cannot be mounted on a SOCKET, PLUG-IN ELECTRONIC COMPONENTS. Do not use if a more specific item name is available.
What is an Electrical Connector Polarizing Key? 1044 Items
An Electrical Connector Polarizing Key (POLARIZING KEY,ELECTRICAL CONNECTOR) is an item specifically designed to be placed in a contact location or between two adjacent contacts of an electrical plug or receptacle to prohibit mismating or cross-mating of contacts.
What is a Plug-In Electronic Components Socket Adapter? 414 Items
A Plug-In Electronic Components Socket Adapter (ADAPTER,SOCKET,PLUG-IN ELECTRONIC COMPONENTS) is an item constructed to establish the necessary accommodations to connect two or more items, one or both being a plug-in electronic components socket, whose physical design or function will not normally warrant their connection. Does not include ADAPTER, CONNECTOR. If terminations are provided for dynamic testing while an electronic component is inserted, see ADAPTER, TEST.
What is a Plug-In Electronic Components Socket Retainer? 126 Items
A Plug-In Electronic Components Socket Retainer (RETAINER,SOCKET,PLUG-IN ELECTRONIC COMPONENTS) is an item designed to position and/or restrain the movement of one or more plug-in electronic component sockets in their normal mounting position. The retainer is not an integral part of the socket. Excludes ADAPTER, SOCKET, PLUG-IN ELECTRONIC COMPONENTS.
What is a Plug-In Electronic Components Socket Assembly? 331 Items
A Plug-In Electronic Components Socket Assembly (SOCKET ASSEMBLY,PLUG-IN ELECTRONIC COMPONENTS) is a grouping of two or more plug-in electronic component sockets mounted on a common mounting or each other. A single socket is termed SOCKET, PLUG-IN ELECTRONIC COMPONENTS regardless of its complexity. See also CONNECTOR ASSEMBLY, ELECTRICAL; JACK ASSEMBLY, TELEPHONE, AND JACK ASSEMBLY, TIP.
What is an Electrical Connector Jackscrew? 786 Items
An Electrical Connector Jackscrew (JACKSCREW,ELECTRICAL CONNECTOR) is a locking device specifically designed to secure engaged electrical connectors. Its mating end is either internally or externally threaded. It is designed to be installed in an ADAPTER (2), CONNECTOR; CONNECTOR BODY, PLUG, ELECTRICAL; CONNECTOR BODY, RECEPTACLE, ELECTRICAL; CONNECTOR, PLUG, ELECTRICAL; CONNECTOR, RECEPTACLE, ELECTRICAL; COVER, ELECTRICAL CONNECTOR; DUMMY CONNECTOR, PLUG; DUMMY CONNECTOR, RECEPTACLE; INSERT, ELECTRICAL CONNECTOR; SHELL, ELECTRICAL CONNECTOR; or a SHIELD, ELECTRICAL CONNECTOR. It may be used for polarization. It may be equipped with a knob, slotted head, knurled head, or the like.
What is an Electrical Connector Guide? 647 Items
An Electrical Connector Guide (GUIDE,ELECTRICAL CONNECTOR) is an aligning device specifically designed to insure proper mating of electrical connectors. Its mating end is unthreaded. It is designed to be installed in an ADAPTER (2), CONNECTOR; CONNECTOR BODY, PLUG, RECEPTACLE, ELECTRICAL; CONNECTOR BODY, RECEPTACLE, ELECTRICAL; CONNECTOR, PLUG, ELECTRICAL; CONNECTOR, RECEPTACLE, ELECTRICAL; COVER, ELECTRICAL CONNECTOR; DUMMY CONNECTOR, PLUG; DUMMY CONNECTOR, RECEPTACLE; INSERT, ELECTRICAL CONNECTOR; SHELL, ELECTRICAL CONNECTOR; or a SHIELD, ELECTRICAL CONNECTOR. It may be used for polarization. Its mounting facilities may include threads, press fit, or the like.
SHIELD,SOCKET,PLUG-IN ELECTRONIC COMPONENTS 46 Items
What is an Electrical Modular Plug Connector Body? 166 Items
An Electrical Modular Plug Connector Body (CONNECTOR BODY,MODULAR PLUG,ELECTRICAL) is the main or principal part of a CONNECTOR, MODULAR PLUG, ELECTRICAL which includes insert(s) but does not include removable contact(s) and having one or more cavitites into which an INSERT MODULE, ELECTRICAL CONNECTOR can be installed. It may have a hood or shell, a jackscrew and jacksocket, or other means for polarizing and aligning. It is not designed to be mounted on a bulkhead, chassis, panel or the like. Excludes CONNECTOR BODY, PLUG, ELECTRICAL. For items without inserts, see SHELL, ELECTRICAL CONNECTOR.
What is an Electrical Modular Receptacle Connector Body? 213 Items
An Electrical Modular Receptacle Connector Body (CONNECTOR BODY,MODULAR RECEPTACLE,ELECTRICAL) is the main or principal part of a CONNECTOR, MODULAR RECEPTACLE, ELECTRICAL which includes insert(s) but does not include removable contact(s) and having one or more cavities into which an INSERT MODULE, ELECTRICAL CONNECTOR can be installed. It may have a hood or shell, a jackscrew and jacksocket, or other means for polarizing and aligning. It is designed to be mounted on a bulkhead, chassis, panel, wall, or the like. Excludes CONNECTOR BODY, RECEPTACLE, ELECTRICAL. For items without inserts, see SHELL, ELECTRICAL CONNECTOR.
What is an Electrical Modular Plug Connector? 497 Items
An Electrical Modular Plug Connector (CONNECTOR,MODULAR PLUG,ELECTRICAL) is an electrical fitting with contacts and having one or more cavities into which an INSERT MODULE, ELECTRICAL CONNECTOR can be installed. The insert modules may/may not be included with the item. The item is constructed to be affixed to the end of a cable, conduit, coaxial line, core, wire, or the like for convenience in joining with another electrical connector(s) or PRINTED WIRING BOARD. It is not designed to be mounted on a bulkhead, chassis, or the like. Excludes JACK, TELEPHONE; JACK, TIP; PLUG, TELEPHONE; PLUG, TIP; INSERT, ELECTRICAL CONNECTOR; INSERT MODULE, ELECTRICAL CONNECTOR; CONNECTOR BODY (as modified); CONNECTOR, PLUG, ELECTRICAL and SOCKET, PLUG-IN ELECTRONIC COMPONENTS. See also LEAD ASSEMBLY, ELECTRICAL; WIRING HARNESS (as modified); and CABLE ASSEMBLY (as modified). For items without inserts, see SHELL, ELECTRICAL CONNECTOR.
What is an Electrical Modular Receptacle Connector? 431 Items
An Electrical Modular Receptacle Connector (CONNECTOR,MODULAR RECEPTACLE,ELECTRICAL) is an electrical fitting with contacts and having one or more cavities into which an INSERT MODULE, ELECTRICAL CONNECTOR can be installed. The insert modules may or may not be included with the item. The item is constructed to be affixed to the end of a cable, conduit, coaxial line, cord, wire (includes printed/etched), PRINTED WIRING BOARD, or the like for convenience in joining with another electrical connector(s), or PRINTED WIRING BOARD. It is designed to be mounted on a bulkhead, chassis, panel, wall, PRINTED WIRNIG BOARD, or the like. Excludes LAMPHOLDER; JACK, TELEPHONE; JACK, TIP; INSERT, ELECTRICAL CONNECTOR; INSERT MODULE, ELECTRICAL CONNECTOR; CONNECTOR BODY (as modified); CONNECTOR, RECEPTACLE, ELECTRICAL and SOCKET, PLUG-IN ELECTRONIC COMPONENTS. See also LEAD ASSEMBLY, ELECTRICAL; WIRING HARNESS (as modified); and CABEL ASSEMBLY (as modified). For items without inserts see SHELL, ELECTRICAL CONNECTOR.
What is an Electrical Connector Insert Module? 358 Items
An Electrical Connector Insert Module (INSERT MODULE,ELECTRICAL CONNECTOR) is an insulating element with or without contacts which form a portion of an INSERT, ELECTRICAL CONNECTOR but in itself is not a complete functioning insert. It is designed to fit into a CONNECTOR BODY, MODULAR PLUG, ELECTRICAL; CONNECTOR BODY, MODULAR RECEPTACLE, ELECTRICAL; CONNECTOR, MODULAR PLUG, ELECTRICAL; or CONNECTOR, MODULAR RECEPTACLE, ELECTRICAL. Excludes INSULATOR (1), DISK; INSULATOR (1). PLATE; TERMINAL (1), FEEDTRHU; and TERMINAL BOARD. See also connector (as modified); CONNECTOR BODY (as modified); and INSERT, ELECTRICAL CONNECTOR.
COVER,SOCKET PLUG-IN ELECTRONIC COMPONENT 82 Items
What is a Dummy Connector Backshell? 612 Items
A Dummy Connector Backshell (BACKSHELL,DUMMY CONNECTOR) is an item specifically designed to fully or partially enclose the termination end of a DUMMY CONNECTOR (as modified). Excludes COVER, ELECTRICAL CONNECTOR and COVER AND GUARD, ELECTRICAL CONNECTOR.
What is an Electrical Connector Shield Termination? 438 Items
An Electrical Connector Shield Termination (TERMINATION,SHIELD,ELECTRICAL CONNECTOR) is an item specifically designed to facilitate the connection of a CABLE, (as modified) to a CONNECTOR, PLUG, ELECTRICAL; CONNECTOR, RECEPTACLE, ELECTRICAL; ADAPTER, CONNECTOR; DUMMY, CONNECTOR, PLUG; DUMMY CONNECTOR, RECEPTACLE; or the like, and provide for a grounded connection between the two items. It excludes SHIELD, ELECTRICAL CONNECTOR and CLAMP, CABLE, ELECTRICAL CONNECTOR.
What is an Electrical Connector Guide Kit? 19 Items
An Electrical Connector Guide Kit (GUIDE KIT,ELECTRICAL CONNECTOR) is two or more items, which may or may not be a mated pair, designed to prevent the mismatching or misalignment of a connector, electrical. Items may also serve as a connector locking device (i.e., jackscrew). May include the mounting hardware. For single items see POLARIZING KEY, ELECTRICAL CONNECTOR; GUIDE, ELECTRICAL CONNECTOR; JACKSCREW ELECTRICAL CONNECTOR.
What is a Telephone Adapter? 46 Items
A Telephone Adapter (ADAPTER,TELEPHONE) is an item specifically designed to facilitate the connection of one or more PLUG, TELEPHONE(S) to one or more JACK, TELEPHONE(S) where the items could not normally be connected or one or more PLUG, TELEPHONE(S) to another PLUG TELEPHONE or one or more JACK, TELEPHONE(S) to another JACK, TELEPHONE or any combination of the above. For items designed to adapt a telephone plug or jack to an electrical connector see ADAPTER, CONNECTOR. For connectors designed to connect a handset to a telephone base or a telephone base to a wall outlet see CONNECTOR, (as modified).
What is an Electrical Connector Coupling Nut? 185 Items
An Electrical Connector Coupling Nut (NUT,COUPLING,ELECTRICAL CONNECTOR) is an item with internal threads and an integral seat, specifically designed to hold together mated electrical connector components.
What is a Circuit Breaker Adapter Kit? 21 Items
A Circuit Breaker Adapter Kit (ADAPTER KIT,CIRCUIT BREAKER) is an adapter kit containing conductors for mounting on a breaker, plug-in mounting blocks, rear studs and mounting hardware. Used for rear connected applications such as switchboards. It facilitates ease of installation and front removal of a CIRCUIT BREAKER.
What is a Cable Breakout Adapter? 78 Items
A Cable Breakout Adapter (ADAPTER,CABLE BREAKOUT) is an item designed to electrically and physically accommodate cable connectors and the terminations to which the cable would normally be connected, and thereby provide facilities for the insertion of test equipment leads, probes, and the like, for test and/or monitoring of power, intelligence, and the like, that may be on the wire complement of the cable. The item may provide facilities for either series, shunt, or interwire tests of the cable under actual operating conditions.
What is a Cable Breakout Adapter Set? 24 Items
A Cable Breakout Adapter Set (ADAPTER SET,CABLE BREAKOUT) is a set consisting of two or more ADAPTER, CABLE BREAKOUT with associated connecting cables that provide facilities for the insertion of test equipment leads, probes, and the like, for test and/or monitoring of power, intelligence, and the like, that may be on the wire complement of the cable. The item may provide facilities for either series, shunt, or interwire tests of the cable while under actual operating conditions.
What is a Connector Adapter Set? 174 Items
A Connector Adapter Set (ADAPTER SET,CONNECTOR) is a grouping of items consisting of two or more ADAPTER, CONNECTOR. It may include a container or other facility for shipping and/or storage.
What is an Electrical Connector Bracket? 3746 Items
An Electrical Connector Bracket (BRACKET,ELECTRICAL CONNECTOR) is a bracket designed to be attached to a supporting surface for the specific purpose of positioning and sustaining an electrical connector(s). Excludes BRACKET, ANGLE. See also PLATE, RETAINING, ELECTRICAL CONNECTOR.
COVER,TELEPHONE JACK 74 Items
What is an Electrical Connector Cover And Shell? 88 Items
An Electrical Connector Cover And Shell (COVER AND SHELL,ELECTRICAL CONNECTOR) is an item consisting of a COVER, ELECTRICAL CONNECTOR and a SHELL, ELECTRICAL CONNECTOR.
What is an Electrical Connector Insert? 3125 Items
An Electrical Connector Insert (INSERT,ELECTRICAL CONNECTOR) is an insulating element with or without contact(s) designed to fit into an ADAPTER (2), CONNECTOR; CONNECTOR BODY, PLUG, ELECTRICAL; CONNECTOR BODY, RECEPTACLE, ELECTRICAL; CONNECTOR, PLUG, ELECTRICAL; or CONNECTOR, RECEPTACLE, ELECTRICAL forming an integral liner or seat. Excludes INSULATOR (1), DISK; INSULATOR (1) PLATE; TERMINAL (1), FEEDTHRU and TERMINAL BOARD. See also CONNECTOR (as modified); CONNECTOR BODY (as modified); and INSERT MODULE, ELECTRICAL CONNECTOR.
What is a Jack Box Assembly? 13 Items
A Jack Box Assembly is two or more JACK BOX on a common mounting or mounted on each other.
What is an Electrical Connector Shell? 3897 Items
An Electrical Connector Shell (SHELL,ELECTRICAL CONNECTOR) is the outside case of one or more connectors into which the dielectric materials and contacts are assembled. Also includes shell for ADAPTER, CONNECTOR. See also SHIELD, ELECTRICAL CONNECTOR and COVER, ELECTRICAL CONNECTOR.
What is a Quick Disconnect Electrical Plug Adapter? 251 Items
A Quick Disconnect Electrical Plug Adapter (ADAPTER,ELECTRICAL PLUG,QUICK DISCONNECT) is an item which attaches to or over a connector plug and provides the necessary mechanical accommodations for the quick connect and disconnect of two electrical connectors. It does not include dielectric materials or contacts. Excludes ADAPTER, CONNECTOR&#59; COUPLING HALF, QUICK DISCONNECT and SHELL, ELECTRICAL CONNECTOR. See also ADAPTER, ELECTRICAL RECEPTACLE, QUICK DISCONNECT.
What is a Quick Disconnect Electrical Receptacle Adapter? 292 Items
A Quick Disconnect Electrical Receptacle Adapter (ADAPTER,ELECTRICAL RECEPTACLE,QUICK DISCONNECT) is an item which attaches to or over a connector receptacle and provides the necessary mechanical accommodations for the quick connect and disconnect of two electrical connectors. It does not include dielectric materials or contacts. See also ADAPTER, CONNECTOR&#59; ADAPTER, ELECTRICAL PLUG, QUICK DISCONNECT&#59; COUPLING HALF, QUICK DISCONNECT&#59; and SHELL, ELECTRICAL CONNECTOR.
What is an Electrical Connector Cover And Guard? 251 Items
An Electrical Connector Cover And Guard (COVER AND GUARD,ELECTRICAL CONNECTOR) is an item consisting of a COVER, ELECTRICAL CONNECTOR, and a GUARD, ELECTRICAL CONNECTOR. They are usually attached to each other by means of a chain, or the like.
What is an Electrical Connector Locking Sleeve? 209 Items
An Electrical Connector Locking Sleeve (SLEEVE,LOCKING,ELECTRICAL CONNECTOR) is an item which is designed to be installed within the shell of an electrical connector. It serves as an inner mounting device to align and secure into place the various internal components, such as rings, washers, seals, and the like, which together make up that portion of an electrical connector which is inclosed by the shell.
What is an Electrical Plug Connector Body? 10434 Items
An Electrical Plug Connector Body (CONNECTOR BODY,PLUG,ELECTRICAL) is the main or principal part of a CONNECTOR, PLUG, ELECTRICAL which includes insert(s) designed to accommodate but does not include removable contacts. It may have a hood or shell, a jackscrew and jacksocket, or other means for polarizing and aligning. It is not designed to be mounted on a bulkhead, chassis, panel, wall, or the like. Excludes CONNECTOR BODY, MODULAR PLUG, ELECTRICAL. For items without insert(s), see SHELL, ELECTRICAL CONNECTOR.
What is an Electrical Receptacle Connector Body? 12275 Items
An Electrical Receptacle Connector Body (CONNECTOR BODY,RECEPTACLE,ELECTRICAL) is the main or principal part of a CONNECTOR, RECEPTACLE, ELECTRICAL which includes insert(s) designed to accommodate but does not include removable contacts. It may have a hood or shell, a jackscrew and jacksocket, or other means for polarizing and aligning. It is designed to be mounted on a bulkhead, chassis, panel, wall, or the like. Excludes CONNECTOR BODY, MODULAR RECEPTACLE, ELECTRICAL. For items without inserts, see SHELL, ELECTRICAL CONNECTOR.
What is an Electrical Connector Backshell? 31785 Items
An Electrical Connector Backshell (BACKSHELL,ELECTRICAL CONNECTOR) is an item specifically designed to be placed around that portion of a CONNECTOR, RECEPTABLE, ELECTRICAL or CONNECTOR, PLUG, ELECTRICAL which contains the facilities for attaching wires or cables.It may be designed to provide the necessary accomodations between an electrical cable clamping device and an electrical connector shell, or it may include the clamping device.It may be used for shielding against electrical interference, mechanical injury, or physical damage due to environmental conditions.
What is an Electrical Plug Connector Seal Ring? 23 Items
An Electrical Plug Connector Seal Ring (SEAL RING,ELECTRICAL PLUG CONNECTOR) is conical shaped item which it is a portion of a CONNECTOR, PLUG, ELECTRICAL designed to fit into the connector.
What is an Electrical Bulkhead Connector? 256 Items
An Electrical Bulkhead Connector (CONNECTOR,BULKHEAD,ELECTRICAL) is an electrical fitting with electrical contacts designed to be mounted on a bulkhead, chassis, panel, wall, or the like. It allows electrical continuity of CABLE ASSEMBLY ELECTRICAL (with modifier) through bulkhead or the like. It may have insulating elements, a hood or shell, screws and means for polarizing and aligning.
What is an Electrical Connector Cover Assembly? 51 Items
An Electrical Connector Cover Assembly (COVER ASSEMBLY,ELECTRICAL CONNECTOR) is two or more COVER(s), ELECTRICAL CONNECTOR fastened together, mounted on each other, or connected by other means such as a strap, cable, chain or the like.
What is an Electrical Test Connector? 81 Items
An Electrical Test Connector (TEST CONNECTOR,ELECTRICAL) is an electrical component specifically designed to mate with another connector to perform one or more special functions, such as to act as a shield, to short contacts, or to open or close electrical circuits. Connector may be mounted either on an interconnecting device, attached to a cable, or may be part of a test set.
What is a Trigger Pulse Amplifier? 206 Items
A Trigger Pulse Amplifier (AMPLIFIER,TRIGGER PULSE) is an electronic device whose input signals control power from a source independent of the input signals and delivers output signals of greater amplitude with respect to current and/or voltage. The output signals characteristics are uniformly related to the input signals. It is controlled by triggering pulses of electrical energy.
What is a Video Amplifier? 980 Items
A Video Amplifier (AMPLIFIER,VIDEO) is an electronic device whose video frequency input signals control power from a source independent of the input signals, and delivers output signals of greater amplitude with respect to current and/or voltage. The output signals characteristics are uniformly related to the input signals. It is generally used in equipment in which the electrical impulses are converted into visual presentation by means of cathode ray tubes or other items.
What is an Electronic Control Amplifier? 2721 Items
An Electronic Control Amplifier (AMPLIFIER,ELECTRONIC CONTROL) is an electronic device which enables input signals to control a local source of power and deliver output signals of greater amplitude with respect to current and/or voltage. The output signals characteristics are uniformly related to the input signals, and are suitable for controlling or supplying power for exciting electric motors or similar devices. It includes devices commonly referred to as servo amplifiers, torque amplifiers and similar equipment only if these devices do not employ synchros nor incorporate servomechanisms. It does not include items which are properly classified as audio frequency, radio frequency, direct current or video amplifiers. For amplifiers that incorporate servomechanisms and employ synchros, see AMPLIFIER, SYNCHRO SIGNAL.
What is a Radio Frequency Amplifier? 7613 Items
A Radio Frequency Amplifier (AMPLIFIER,RADIO FREQUENCY) is an electronic device whose radio frequency input signals control power from a source independent of the input signals, and delivers radio frequency output signals of greater amplitude with respect to current and/or voltage. The output signals characteristics are uniformly related to the input signals. It operates at frequencies above 20 kilohertz.
What is an Audio Frequency Amplifier? 2452 Items
An Audio Frequency Amplifier (AMPLIFIER,AUDIO FREQUENCY) is an electronic device whose audio frequency input signals control power from a source independant of the input signal and delivers audio frequency output signals of greater amplitude with respect to current and/or voltage. The output signals characteristics are uniformly related to the input signals. It operates at frequencies of 20 kilohertzs and below. It may or may not have signal switching capabilities.
What is an Intermediate Frequency Amplifier? 1172 Items
An Intermediate Frequency Amplifier (AMPLIFIER,INTERMEDIATE FREQUENCY) is an electronic device whose input signals controls a local source of power and delivers an output signal of greater amplitude with respect to current and/or voltage. The output signals characteristics are uniformly related to the input signals. It is tuned to a single fixed frequency which is the resultant of heterodyne action between a local oscillator frequency and a signal frequency introduced from an external source.
What is an Amplifier Assembly? 1138 Items
An Amplifier Assembly is two or more independent amplifiers having a common mounting or mounted on each other.
What is a Trigger Pulse-Video Amplifier? 15 Items
A Trigger Pulse-Video Amplifier (AMPLIFIER,TRIGGER PULSE-VIDEO) is an electronic device whose input signals control power from a source independent of the input signals and delivers output signals of greater amplitude with respect to current and/or voltage. The output signals characteristics are uniformly related to the input signals. It incorporates two or more channels of which at least one is controlled by triggering pulses of electrical energy, and another is for electrical impulses which are video frequency signals which are converted into visual presentations (pictures) by means of a cathode ray tube or other items.
What is a Magnetic Amplifier? 666 Items
A Magnetic Amplifier (AMPLIFIER,MAGNETIC) is an item consisting of a saturable reactor which is specially designed to be used in conjunction with a rectifier(s) for amplification purposes. The rectifier(s) may or may not be an integral part of the item of supply. The item may include resistors, capacitors, and/or other electrical components.
What is an Amplifier Subassembly? 1803 Items
An Amplifier Subassembly is two or more different types of items having a common mounting or mounted on each other which together form a portion of an amplifier but which in itself is not a complete functioning item and cannot be assigned a more definite item name.
What is a Direct Current Amplifier? 495 Items
A Direct Current Amplifier (AMPLIFIER,DIRECT CURRENT) is an electronic device whose input signals control power from a source independent of the input signals and delivers output signals of greater amplitude with respect to current and/or voltage. The output signals characteristics are uniformly related to the input signals. It is used for small variations in direct current electrical impulses, and generally employs direct coupling between stages through resistors.
What is an Audio-Radio Frequency Amplifier? 534 Items
An Audio-Radio Frequency Amplifier (AMPLIFIER,AUDIO-RADIO FREQUENCY) is an electronic device whose audio and radio frequency input signals control power from a source independent of the input signals and delivers audio and radio frequency output signals of greater amplitude with respect to current and/or voltage. The output signals characteristics are uniformly related to the input signals. It operates at frequencies above and below 20 kilohertz.
What is an Accelerometer Signal Amplifier? 44 Items
An Accelerometer Signal Amplifier (AMPLIFIER,ACCELEROMETER SIGNAL) is an amplifier which amplifies the input and/or output signal voltage(s) of an accelerometer. Excludes AMPLIFIER, ELECTRONIC CONTROL; and AMPLIFIER, SYNCHRO SIGNAL.
What is a Parametric Amplifier? 75 Items
A Parametric Amplifier (AMPLIFIER,PARAMETRIC) is an item, the output characteristics of which are uniformly related to the input signal, but of greater amplitude with respect to current and/or voltage. It consists basically of an input signal inductance, an output signal inductance, and a semiconductor diode device. An external source of radio frequency power, commonly referred to as the "pump frequency" is injected across the diode at a frequency fundamentally or harmonically related to the input signal frequency. The diode, operating as a type of frequency-controlled capacitor, increases the amplitude of the input signal by an appreciable value, at an almost zero noise level. The characteristic of extremely low noise level at very high operating frequencies, makes the amplifier suitable for use with radar receivers, missile detection and tracking equipments, radio astronomy research, and the like. Excludes AMPLIFIER, RADIO FREQUENCY.
What is a Synchro Signal Amplifier? 343 Items
A Synchro Signal Amplifier (AMPLIFIER,SYNCHRO SIGNAL) is a device designed to increase the capacity of a synchro transmission system and to isolate reflected oscillations from the input synchro signal. It includes a control transformer, an electronic or magnetic amplifier, a servomechanism and one or more synchro transmitters. May include synchro receiver(s). For amplifiers that do not include synchros and do not incorporate servomechanisms, see AMPLIFIER, ELECTRONIC CONTROL.
What is a Data Acquisition System Amplifier? 75 Items
A Data Acquisition System Amplifier (AMPLIFIER,DATA ACQUISITION SYSTEM) is a specifically designed amplifier unit which amplifies low-level analog signals derived from a quantity of sources, such as strain gages, thermocouples, transducers, and the like, to useful levels for measurement, conditioning, monitoring, recording, indication, digital conversion, and the like. It may consist of single or multiple channels.
What is an Adjustable Resistor? 4489 Items
An Adjustable Resistor (RESISTOR,ADJUSTABLE) is a resistor whose overall ohmic value is fixed; in addition, it has one or more movable terminals which are designed to be set and fixed prior to use, to include any desired value of resistance within the range of the complete resistor. The opposition to the flow of current is an inherent property of the material used and is manifest in the heat dissipated in the item itself.
What is a Wire Wound Fixed Resistor? 41338 Items
A Wire Wound Fixed Resistor (RESISTOR,FIXED,WIRE WOUND) is a resistor whose ohmic value cannot be adjusted or varied. The resistance element consists of high resistance wire (or ribbon) either wound on an insulated form or constructed so as to be self supporting. Opposition to the flow of current is an inherent property of the resistance wire and is manifest by the heat dissipation in the resistor. Excludes SUPPRESSOR, IGNITION INTERFERENCE.
What is a Composition Fixed Resistor? 18242 Items
A Composition Fixed Resistor (RESISTOR,FIXED,COMPOSITION) is a resistor whose ohmic value cannot be adjusted or varied. The resistance element consists of a mixture of carbon, an insulating material, and suitable binders, either molded together or applied as a thin layer of conducting material on an insulated form. The opposition to the flow of current is an inherent property of the materials used and is manifest by the heat dissipation in the item itself. See also ATTENUATOR, FIXED; RESISTOR, FIXED, FILM; and RESISTOR, THERMAL. Excludes SUPPRESSOR, IGNITION INTERFERENCE.
DUMMY RESISTOR 86 Items
What is a Thermal Resistor? 7175 Items
A Thermal Resistor (RESISTOR,THERMAL) is a thermally sensitive resistor whose primary function is to exhibit a change in electrical resistance with a change in body temperature. Item may be mounted in a probe or housing. For ballast tube type resistors, see RESISTOR (1), CURRENT REGULATING. Excludes TRANSMITTER (1), TEMPERATURE, ELECTRICAL RESISTANCE and TEMPERATURE ELEMENT, RESISTANCE METEOROLOGICAL.
What is a Resistor Assembly? 5403 Items
A Resistor Assembly is two or more individual fixed, variable, thermal, or adjustable resistors on a common mounting or mounted on each other. The resistors must be separable and each must be capable of functioning in accordance with its applicable item name. For variable resistors mounted in tandem with a common or dual concentric shaft, see RESISTOR, VARIABLE (as modified) and ATTENUATOR, VARIABLE. For inseparable resistors permanently cased, sealed or potted together to form a multisection unit, see RESISTOR ASSORTMENT; RESISTOR SET, MATCHED; and items which have wire leads temporarily twisted together, or are otherwise physically attached solely for convenience in handling or shipping.
What is a Resistor Subassembly? 207 Items
A Resistor Subassembly is two or more different types of items having a common mounting or mounted on each other which together form a portion of a resistor, but which in itself is not a complete functioning item and cannot be assigned a definite item name.
What is a Resistor Shield? 82 Items
A Resistor Shield (SHIELD,RESISTOR) is an item specifically designed to be placed around a resistor for the purpose of shielding against electrical or mechanical interference. May include mounting facilities. See also COVER (as modified); HOUSING (as modified); VISOR (as modified).
What is a Resistance Element? 1540 Items
A Resistance Element is an item of electrically resistive material in the form of a grid, ribbon, or wire designed to be used singly or built into groups to form a resistance unit. It is usually a maintenance part for a RESISTOR (as modified), a RHEOSTAT, or similar item. Includes items which can be used as "heaters" (heating elements) but which are rated in terms of resistance and resistance tolerance. Excludes ABSORBER, RADIO FREQUENCY RADIATION; HEATER, THERMAL RELEASE; HEATING ELEMENT, ELECTRICAL (as modified); and RESISTOR (as modified).
What is a Film Fixed Resistor? 167788 Items
A Film Fixed Resistor (RESISTOR,FIXED,FILM) is a resistor whose ohmic value cannot be adjusted or varied. The resistance element consists of either a thin layer of conductive material, containing either binders or insulating materials, deposited on an insulated form; or an alloy of metal and ceramic materials, usually fused to an insulated form. Opposition to the flow of current is an inherent property of the materials used and is manifest by the heat dissipation in the resistor. See also ATTENUATOR, FIXED and RESISTOR, FIXED, COMPOSITION. Excludes carbon composition type resistors.
What is a Voltage Sensitive Resistor? 1639 Items
A Voltage Sensitive Resistor (RESISTOR,VOLTAGE SENSITIVE) is a resistor specifically designed so that its ohms value decreases with increasing applied voltage over at least a portion of its rated ohmic range. See also ABSORBER, OVERVOLTAGE.
What is a Current Regulating Resistor? 308 Items
A Current Regulating Resistor (RESISTOR,CURRENT REGULATING) is a resistor with its resistive element contained in a gas filled inclosure, specifically designed to maintain a relatively constant current flow in a circuit by compensating for variations in voltage. See also RESISTOR, THERMAL and RESISTOR, VOLTAGE SENSITIVE.
What is a Resistor Holder? 557 Items
A Resistor Holder (HOLDER,RESISTOR) is an item designed primarily to mechanically and/or electrically accommodate one or more resistors in such a way that they may be readily inserted or removed. For items in which the resistors are to be mounted by using screw type terminals or solder lugs, see TERMINAL BOARD. If the holder will accommodate either fuses or resistors, use item name FUSEHOLDER. For items designed to accommodate lamp base type resistors, see LAMPHOLDER and LAMPHOLDER ASSEMBLY.
What is a Resistor Assortment? 608 Items
A Resistor Assortment is two or more of the same or different types of resistors of different known values grouped together in a single package and intended for individual replacement and wide selectivity range.
What is a Matched Resistor Set? 767 Items
A Matched Resistor Set (RESISTOR SET,MATCHED) is a grouping of two or more separate fixed resistors which, when connected in series or parallel, will produce a specified total resistance, or whose resistance values are equal to each other within a specified tolerance. For items which are connected as required for use, and/or which are mounted on a common mounting or on each other, see RESISTOR ASSEMBLY. Excludes NETWORK, IMPEDANCE MATCHING.
What is a Film Fixed Resistor Network? 10848 Items
A Film Fixed Resistor Network (RESISTOR NETWORK,FIXED,FILM) is an arrangement of multiple fixed resistive elements or discrete resistors permanently encased, encapsulated, or potted together, to form an inseparable unit. The resistive elements, consisting of a thin layer of conductive material deposited on or fused to an insulating base, usually are electrically connected to each other and may be arranged in any circuit configuration. Excludes RESISTOR, FIXED (as modified); RESISTOR ASSEMBLY; RESISTOR NETWORK, FIXED-VARIABLE; and RESISTOR SET, MATCHED.
What is a Wire Wound Fixed Resistor Network? 416 Items
A Wire Wound Fixed Resistor Network (RESISTOR NETWORK,FIXED,WIRE WOUND) is an arrangement of multiple fixed resistive elements or discrete resistors permanently encased, encapsulated, or potted together, to form an inseparable unit. The resistive elements, consisting of high resistance wire (or ribbon), usually are electrically connected to each other and may be arranged in any circuit configuration. Excludes RESISTOR, FIXED (as modified); RESISTOR ASSEMBLY; RESISTOR NETWORK, FIXED-VARIABLE; and RESISTOR SET, MATCHED.
What is a Fixed-Variable Resistor Network? 93 Items
A Fixed-Variable Resistor Network (RESISTOR NETWORK,FIXED-VARIABLE) is an arrangement of multiple fixed and variable resistive elements or discrete resistors permanently encased, encapsulated, or potted together to form an inseparable unit. The resistive elements may consist of a thin layer of conductive material deposited on or fused to an insulating base, or may consist of high resistance wire (or ribbon). The elements usually are electrically connected to each other and may be arranged in any circuit configuration. Excludes RESISTOR, FIXED, (as modified); RESISTOR, VARIABLE, (as modified); RESISTOR ASSEMBLY; and RESISTOR SET, MATCHED. See also RESISTOR NETWORK, FIXED, FILM; RESISTOR NETWORK, FIXED, WIREWOUND.
What is a Hybrid Variable Resistor? 261 Items
A Hybrid Variable Resistor (RESISTOR,VARIABLE,HYBRID) is a resistor in which a sliding or rolling contact moves over an exposed area of the resistive element. Uniform contact pressure on the resistance element is maintained by positive pressure to permit smooth electrical and mechanical control of the resistor over the entire resistance range. The resistive element is constructed of a combination of two materials usually consisting of a wirewound element with a coating of conductive plastic applied over the resistance wire where the slider makes contact. May be constructed of a single or multiturns of wire supported on an insulating structure on which the wiper contacts the coated wire continuously in the direction of wiper travel. The opposition to the flow of current is an inherent property of the wire used and is manifested in the heat dissipated in the resistor itself. For items having manually positioned taps designed to be set and fixed prior to use, see RESISTOR, ADJUSTABLE. For items with step by step variation, see RHEOSTAT; and RESISTOR, STEP BY STEP. For tandem-mounted items designed to function together as an attenuator (and rated accordingly), see ATTENUATOR, VARIABLE. Excludes other RESISTOR (1), VARIABLE, (as modified).
What is an Inductive Wire Wound Fixed Resistor? 35637 Items
An Inductive Wire Wound Fixed Resistor (RESISTOR,FIXED,WIRE WOUND,INDUCTIVE) is a resistor whose ohmic value cannot be adjusted or varied. The resistance element consists of high resistance wire (or ribbon) either wound on an insulated form or constructed so as to be self-supporting. The item must have inherent characteristics of inducing self-inductance. Opposition to current flow is an inherent property of the resistance wire and is manifested by the heat dissipation in the resistor. Exclut s SUPPRESSOR, IGNITION INTERFERENCE. See also RESISTOR (1), FIXED, WIRE WOUND, NONINDUCTIVE.
What is a Noninductive Wire Wound Fixed Resistor? 3278 Items
A Noninductive Wire Wound Fixed Resistor (RESISTOR,FIXED,WIRE WOUND,NONINDUCTIVE) is a resistor whose ohmic value cannot be adjusted or varied. The resistance element consists of high resistance wire (or ribbon) either wound on an insulated form or constructed so as to be self-supporting. The items must have inherent characteristics of inducing little or no self-inductance. Opposition to current flowo s an inherent property of the resistance wire and is manifested by the heat dissipation in the resistor. Excludes SUPPRESSOR, IGNITION INTERFERENCE. See also RESISTOR (1), FIXENTEWIRE WOUND, INDUCTIVE.
What is a Nonprecision Nonwire Wound Variable Resistor? 26598 Items
A Nonprecision Nonwire Wound Variable Resistor (RESISTOR,VARIABLE,NONWIRE WOUND,NONPRECISION) is a resistor in which a sliding or rolling contact moves over an exposed area of the resistive element to change the ohmic value of the output. The functional tolerance (linearity), if given, of the output is greater than plus or minus 1 percent on linear outputs. Specified outputs such as sine, cosine, tangent, etc., shall be considered to be precision. For items having manually positioned taps designed to be set and fixed prior to use, see RESISTOR, ADJUSTABLE. For items with step by step variation, see RHEOSTAT and RESISTOR, STEP BY STEP. For tandem-mounted items designed to function together as an attenuator (and rated accordingly), see ATTENUATOR, VARIABLE. Excludes RESISTOR (1), VARIABLE, WIRE WOUND, NONPRECISION; RESISTOR (1), VARIABLE, NONWIRE WOUND PRECISION; and RESISTOR (1), VARIABLE, WIRE WOUND, PRECISION.
What is a Nonprecision Wire Wound Variable Resistor? 19992 Items
A Nonprecision Wire Wound Variable Resistor (RESISTOR,VARIABLE,WIRE WOUND,NONPRECISION) is a resistor in which a sliding or rolling contact moves over an exposed area of the resistive element to change the ohmic value of the output. The functional tolerance (linearity), if given, of the output is greater than plus of minus 1 percent on linear outputs. Specified outputs such as sine, cosine, tangent, etc., shall be considered to be precision. For items having manually positioned taps designed to be set and fixed prior to use, see RESISTOR, ADJUSTABLE. For items with step by step variation, see RHEOSTAT and RESISTOR, STEP BY STEP. For tandem-mounted items designed to function together as an attenuator (and rated accordingly), see ATTENUATOR, VARIABLE. Excludes RESISTOR (1), VARIABLE, NONWIRE WOUND, NONPRECISION; RESISTOR (1), VARIABLE, NONWIRE WOUND, PRECISION; and RESISTOR (1), VARIABLE, WIRE WOUND, PRECISION.
What is a Precision Nonwire Wound Variable Resistor? 1438 Items
A Precision Nonwire Wound Variable Resistor (RESISTOR,VARIABLE,NONWIRE WOUND,PRECISION) is a resistor in which a sliding or rolling contact moves over an exposed area of the resistive element to change the ohmic value of the output. The finctional tolerance (linearity) of the output is equal to or less than plus or minus 1 percent on linear outputs. Specified outputs such as sine, cosine, tangent, etc., shall be considered to be precision. For items having manually postioned taps designed to be set and fixed prior to use, see RESISTOR, ADJUSTABLE. For items with step by step variation, see REHOSTAT and RESISTOR, STEP BY STEP. For tandem-mounted items designed to function together as an attenuator (and rated accordingly), see ATTENUATOR, VARIABLE. Excludes RESISTOR (1), VARIABLE, WIRE WOUND, NONPRECISION; RESISTOR (1), VARIABLE NONWIRE WOUND, NONPRECISION; and RESISTOR (1), VARIABLE, WIRE WOUND, PRECISION.
What is a Precision Wire Wound Variable Resistor? 4987 Items
A Precision Wire Wound Variable Resistor (RESISTOR,VARIABLE,WIRE WOUND,PRECISION) is a resistor in which a sliding or rolling contact moves over an exposed area of the resistive element to change the ohmic value of the output. The functional tolerance (linearity) of the output is equal to or less than plus or munus 1 percent on linear outputs. Specified outputs such as sine, cosine, tangent, etc., shall be considered to be precision. For items having manually positioned taps designed to be set and fixed prior to use, see RESISTOR, ADJUSTABLE, For items with step by step variation, see RHEOSTAT and RESISTOR, STEP BY STEP. For tandem-mounted items designed to function together as an attenuator (and rated accordingly), see ATTENUATOR, VARIABLE. Excludes RESISTOR (1), VARIABLE, NONWIRE WOUND, NONPRECISION; RESISTOR (1), VARIABLE, NONWIRE WOUND, PRECISION; and RESISTOR (1), VARIABLE, WIRE WOUND, NONPRECISION.
What is a Mounting Plate? 715 Items
A Mounting Plate (PLATE,MOUNTING) is a metallic or nonmetallic item which is rigid, flat and generally smooth. Its thickness is small in comparison to its length and width. It is designed for mounting another item and may have drilled or threaded holes or other facilities for mounting to a supporting object or surface. See SUPPORT, as modified. Do not use if a more specific name applies.
What is a Voltage Sensitive Resistor Network? 110 Items
A Voltage Sensitive Resistor Network (RESISTOR NETWORK,VOLTAGE SENSITIVE) is an arrangement of multiple voltage sensitive resistors permanently, encased, encapsulated or potted together to form an inseparable unit. The voltage sensitive resistors usually are electrically connected to each other and may be arranged in any circuit configuration. Excludes RESISTOR, FIXED (as modified); RESISTOR VARIABLE (as modified); RESISTOR ASSEMBLY and RESISTOR SET, MATCHED. See also RESISTOR NETWORK, FIXED, FILM; RESISTOR NETWORK, FIXED, WIREWOUND and RESISTOR NETWORK, THERMAL.
What is a Thermal Resistor Network? 14 Items
A Thermal Resistor Network (RESISTOR NETWORK,THERMAL) is an arrangement of multiple thermally sensitive resistors permanently encased, encapsulated, or potted together to form an inseparable unit. The thermally sensitive resistors usually are electrically connected to each other and may be arranged in any circuit configuration. Excludes RESISTOR, FIXED (as modified); RESISTOR, VARIABLE (as modified); RESISTOR ASSEMBLY; and RESISTOR SET, MATCHED. See also RESISTOR NETWORK, FIXED, FILM; RESISTOR NETWORK, FIXED WIREWOUND; and RESISTOR NETOWRK, VOLTAGE SENSITIVE.
What is a Motor Driven Variable Resistor? 168 Items
A Motor Driven Variable Resistor (RESISTOR,VARIABLE,MOTOR DRIVEN) is a resistor, whose resistance value is controlled by an electric motor, which is coupled to the resistor shaft by a friction type clutch.
What is a Film Fixed Chip Resistor? 13057 Items
A Film Fixed Chip Resistor (RESISTOR,CHIP,FIXED,FILM) is a resistor whose ohmic value cannot be adjusted or varied. The resistor element consists of either a thin layer or conductive material, containing neither binders or insulating materials, deposited on an insulated form, or an alloy of metal and ceramic materials, usually fused to an insulated form. Opposition to the flow of current is an inherent property of the materials used and is manifest by the heat dissipation in the resistor. Primarily intended for incorporation into microelectronic circuits and surface mounted applications.
What is a Paper Dielectric Fixed Capacitor? 15431 Items
A Paper Dielectric Fixed Capacitor (CAPACITOR,FIXED,PAPER DIELECTRIC) is a capacitor whose capacitance value cannot be adjusted or varied, having paper as the dielectric material. It may be a single unit or consist of two or more fixed units which cannot be seperated. For items whose dielectric material consist of plasticized (plastic impregnated) paper or paper-plastic combinations, see CAPACITOR, FIXED, PLASTIC DIELECTRIC. For items whose electrodes consist of a metallic film deposited (metallized) on the dielectric material, see CAPACITOR, FIXED, METALIZED, PAPER-PLASTIC DIELECTRIC.
What is a Glass Dielectric Fixed Capacitor? 3637 Items
A Glass Dielectric Fixed Capacitor (CAPACITOR,FIXED,GLASS DIELECTRIC) is a capacitor, whose capacitance value cannot be adjusted or varied, having a glass (silicas) or glass like substance (e.g., porcelain, vitreous enamel) as the dielectric material. It may be a single unit, or consist of two or more fixed units which cannot be separated.
What is a Mica Dielectric Fixed Capacitor? 22030 Items
A Mica Dielectric Fixed Capacitor (CAPACITOR,FIXED,MICA DIELECTRIC) is a capacitor, whose capacitance value cannot be adjusted or varied, having natural sheet mica or reconstituted flaked mica formed into sheets as the dielectric material. It may be a single unit, or consist of two or more fixed units which cannot be separated.
What is a Plastic Dielectric Fixed Capacitor? 22134 Items
A Plastic Dielectric Fixed Capacitor (CAPACITOR,FIXED,PLASTIC DIELECTRIC) is a capacitor whose capacitance value cannot be adjusted or varied, having a plastic, plastic film, plasticized (plastic impregnated) paper, or any combination of plastic and paper or plastic and paper films as the dielectric material. The plastic may be one or more types of synthetic compounds such as polyesters, polyfluorides, polycabonates, and the like. It may be a single unit, or consist of two or more fixed units which cannot be separated. For items whose electrodes consist of a metallic film deposited (metallized) on the dielectric material, see CAPACITOR, FIXED, METALLIZED, PAPER-PLASTIC DIELECTRIC.
What is a Ceramic Dielectric Fixed Capacitor? 60014 Items
A Ceramic Dielectric Fixed Capacitor (CAPACITOR,FIXED,CERAMIC DIELECTRIC) is a capacitor, whose capacitance value cannot be adjusted or varied, having a ceramic dielectric.It may be a single unit, or consist of two or more fixed units which cannot be separated.
What is an Electrolytic Fixed Capacitor? 54626 Items
An Electrolytic Fixed Capacitor (CAPACITOR,FIXED,ELECTROLYTIC) is a capacitor, whose capacitance value cannot be adjusted or varied, having a chemically formed film as the dielectric. It may be a single unit, or consist of two or more fixed units which cannot be separated.
What is an Air Dielectric Fixed Capacitor? 147 Items
An Air Dielectric Fixed Capacitor (CAPACITOR,FIXED,AIR DIELECTRIC) is a capacitor, whose capacitance value cannot be adjusted or varied, having only air as a dielectric. It may be a single unit, or consist of two or more fixed units which cannot be separated. It excludes CAPACITOR,FIXED,GAS DIELECTRIC.
What is a Capacitor Assembly? 2461 Items
A Capacitor Assembly is two or more separable CAPACITOR, FIXED (as modified) and/or CAPACITOR, VARIABLE (as modified) having a common mounting or mounted on each other. Excludes single fixed capacitors with multiple sections; single variable capacitors with integral trimmers or with multiple sections actuated by a single shaft; CAPACITOR ASSORTMENT; and CAPACITOR SET, MATCHED.
What is an Air Dielectric Variable Capacitor? 2544 Items
An Air Dielectric Variable Capacitor (CAPACITOR,VARIABLE,AIR DIELECTRIC) is a capacitor whose capacitance value is controlled by a mechanical means which effects a continuous variation of its capacitance. It includes items consisting of two or more variable capacitors which are inseparable.
What is a Glass Dielectric Variable Capacitor? 567 Items
A Glass Dielectric Variable Capacitor (CAPACITOR,VARIABLE,GLASS DIELECTRIC) is a capacitor whose capacitance value is controlled by a mechanical means which effects a continuous variation of its capacitance. It includes items consisting of two or more variable capacitors which are inseparable.
What is an Oil Dielectric Variable Capacitor? 14 Items
An Oil Dielectric Variable Capacitor (CAPACITOR,VARIABLE,OIL DIELECTRIC) is a capacitor whose capacitance value is controlled by a mechanical means which effects a continuous variation of its capacitance. It includes items consisting of two or more variable capacitors which are inseparable.
What is a Ceramic Dielectric Variable Capacitor? 1728 Items
A Ceramic Dielectric Variable Capacitor (CAPACITOR,VARIABLE,CERAMIC DIELECTRIC) is a capacitor whose capacitance value is controlled by a mechanical means which effects a continuous variation of its capacitance. It includes items consisting of two or more variable capacitors which are inseparable.
What is a Mica Dielectric Variable Capacitor? 246 Items
A Mica Dielectric Variable Capacitor (CAPACITOR,VARIABLE,MICA DIELECTRIC) is a capacitor whose capacitance value is controlled by a mechanical means which effects a continuous variation of its capacitance. It includes items consisting of two or more variable capacitors which are inseparable.
What is a Plastic Dielectric Variable Capacitor? 326 Items
A Plastic Dielectric Variable Capacitor (CAPACITOR,VARIABLE,PLASTIC DIELECTRIC) is a capacitor whose capacitance value is controlled by a mechanical means which effects a continuous variation of its capacitance. It includes items consisting of two or more variable capacitors which are inseparable.
What is a Capacitor Shield? 101 Items
A Capacitor Shield (SHIELD,CAPACITOR) is an item specifically designed to be placed around a capacitor for the purpose of shielding against electrical or mechanical interference. May include mounting facilities. See also COVER (as modified); HOUSING (as modified) and VISOR (as modified).
What is a Capacitor Rotor? 56 Items
A Capacitor Rotor (ROTOR,CAPACITOR) is the rotatable shaft and the shaft mounted plates of a variable capacitor.
What is a Capacitor Plate? 138 Items
A Capacitor Plate (PLATE,CAPACITOR) is one of the electrodes of a capacitor.
What is a Gas Dielectric Fixed Capacitor? 121 Items
A Gas Dielectric Fixed Capacitor (CAPACITOR,FIXED,GAS DIELECTRIC) is a capacitor, whose capacitance value cannot be adjusted or varied. It may be a single unit, or consist of two or more fixed untis which cannot be separated. Its dielectric may be either gas or vacuum.
What is a Quartz Dielectric Fixed Capacitor? 17 Items
A Quartz Dielectric Fixed Capacitor (CAPACITOR,FIXED,QUARTZ DIELECTRIC) is a capacitor, whose capacitance value cannot be adjusted or varied, having natural quartz as the dielectric material. It may be single unit, or consist of two or more fixed units which cannot be separated.
What is a Capacitor Retainer? 1469 Items
A Capacitor Retainer (RETAINER,CAPACITOR) is an item primarily designed to position and/or restrain the movement of one or more capacitors in their normal mounting position. Excludes CLIP, ELECTRICAL and CLAMP, LOOP.
What is a Capacitor Assortment? 215 Items
A Capacitor Assortment is two or more of the same or different types of capacitors of different known values grouped together in a single package and intended for individual replacement and wide selectivity range.
What is a Quartz Dielectric Variable Capacitor? 58 Items
A Quartz Dielectric Variable Capacitor (CAPACITOR,VARIABLE,QUARTZ DIELECTRIC) is a capacitor whose capacitance value is controlled by a mechanical means which effects a continuous variation of its capacitance. It includes items consisting of two or more variable capacitors which are inseparable.
What is a Gas Dielectric Variable Capacitor? 219 Items
A Gas Dielectric Variable Capacitor (CAPACITOR,VARIABLE,GAS DIELECTRIC) is a capacitor whose capacitance value is controlled by a mechanical means which effects a continuous variation of its capacitance. It includes items consisting of two or more variable capacitors which are inseparable. Its dielectric may be either gas or vacuum.
What is a Matched Capacitor Set? 171 Items
A Matched Capacitor Set (CAPACITOR SET,MATCHED) is a grouping of two or more separate CAPACITOR, FIXED (as modified) which, when connected in series or parallel, provide a specific total capacitance, or whose capacitance values are equal to each other within a specified tolerance. For items having a common mounting or mounted on each other, see CAPACITOR ASSEMBLY. Excludes single capacitors having multiple sections.
What is a Paper-Plastic Dielectric Metallized Fixed Capacitor? 23778 Items
A Paper-Plastic Dielectric Metallized Fixed Capacitor (CAPACITOR,FIXED,METALLIZED,PAPER-PLASTIC DIELECTRIC) is a capacitor whose capacitance value cannot be adjusted or varied having paper, plastic, or any combination of paper and plastic as the dielectric material with a metallic film deposited thereon. It may be a single unit or consist of two or more units which cannot be separated.
What is a Capacitor Case? 14 Items
A Capacitor Case (CASE,CAPACITOR) is a case specifically designed to hold a capacitor.
What is a Conductor Splice? 4373 Items
A Conductor Splice (SPLICE,CONDUCTOR) is an item designed to expedite or simplify the connection of two or more electrical conductors without bringing them to a fixed point such as a binding post or terminal. It may have a separate tubular shaped piece of nonmetallic, flexible material designed to be slipped over the crimped first piece to seal the conductor joint through heat sealing.
What is a Battery Terminal Adapter? 423 Items
A Battery Terminal Adapter (ADAPTER,BATTERY TERMINAL) is an adapter constructed to accommodate electrically and physically a cable lug to a battery terminal whose physical design will not normally warrant their connection.
What is a Radio Frequency Cable Adapter? 435 Items
A Radio Frequency Cable Adapter (ADAPTER,RADIO FREQUENCY CABLE) is an adapter specifically designed to electrically connect two or more radio frequency cables, such as a CABLE ASSEMBLY, RADIO FREQUENCY or CABLE ASSEMBLY, RADIO FREQUENCY, BRANCHED&#59; or one radio frequency cable and a PRINTED WIRING BOARD. It does not include cable(s) or items that provide mating facilities for joining to an electrical connector(s). For items designed to mate with another electrical connector(s), see ADAPTER (2), CONNECTOR and CONNECTOR (as modified). Excludes ADAPTER, WAVEGUIDE and FERRULE, METALLIC SHIELDED CABLE, GROUNDING.
What is a Terminal Board? 32455 Items
A Terminal Board is an item consisting of insulating material, which is specifically designed to have fastened thereon, or on which are fastened terminal(s), such as screws, solder lugs, solder studs, solderless connectors, clips, and the like. It is usually used for junctions or terminations of wire or cable assemblies. It does not include items as defined above with parts, such as resistors and capacitors mounted thereon. Do not use if a more specific name exists, such as FUSEHOLDER; HOLDER, RESISTOR; FANNING STRIP; CONTACT ASSEMBLY, ELECTRICAL; JACK ASSEMBLY, TIP; CHAMBER, CABLE TERMINAL; PANEL (2) (as modified); CONNECTOR (as modified). Excludes TERMINAL, STUD; TERMINAL, FEEDTHRU, INSULATED; POST, BINDING, ELECTRICAL; and CHASSIS, ELECTRICAL-ELECTRONIC EQUIPMENT. For items having printed electrical conductor paths, see PRINTED WIRING BOARD.
What is a Terminal Box? 3972 Items
A Terminal Box is an enclosure which includes, mounts and protects one or more terminals and/or terminal boards. It is designed for and may include a cover and such accessories as mounting hardware, brackets, locks, and conduit fittings. For boxes which include combinations of different electrical devices such as terminals and/or terminal boards, fuseholders, switches, jacks, circuit breakers, connectors and the like, see DISTRIBUTION BOX. For boxes which are designed to mount, but which do not include terminals and/or terminal boards, see JUNCTION BOX. Excludes TERMINAL BOARD ASSEMBLY. See also CHAMBER, CABLE TERMINAL; and INTERCONNECTING CABINET.
What is a Terminal Board Cover? 1842 Items
A Terminal Board Cover (COVER,TERMINAL BOARD) is a cover designed to protect electrical terminals against damage, shorting and/or grounding. May have provisions for the passage of wire or cable. Excludes SHIELD, TERMINAL and SHIELD, TERMINAL BOARD.
COVER,TERMINAL BOX 504 Items
What is a Lug Terminal? 22257 Items
A Lug Terminal (TERMINAL,LUG) is a terminal designed to be affixed, usually at one end, to a post, stud, chassis, or the like for mounting. It has provisions for attachment of wire(s) or similar electrical conductor(s) in order to establish an electrical connection and could require the use of tool(s) for attachment of wire. For post like terminals, see TERMINAL STUD. Excludes CLIP, ELECTRICAL; TERMINAL, QUICK DISCONNECT and TERMINAL FEEDTHRU.
What is a Binding Post Shield? 116 Items
A Binding Post Shield (SHIELD,BINDING POST) is an item specifically designed to be placed around or mounted on a binding post for the purpose of preventing electrical or mechanical interference. May include mounting facilities and provide means for the passage of wire.
What is an Electrical Binding Post? 3301 Items
An Electrical Binding Post (POST,BINDING,ELECTRICAL) is a metallic postlike terminal, insulated or uninsulated, which is mounted on a board, chassis, panel, or other similar supporting surface. It is designed for frequent manual connections and disconnections of at least one electrical conductor, such as a wire, alligator clip, or spade lug. It may have additional tip jack features for the acceptance of banana plugs, phone tips, and the like. It may also have provisions for permanently attaching an electrical conductor(s). For items which require all electrical conductors to be permanently attached (soldered, crimped, and the like), see TERMINAL, STUD. See also JACK, TIP.
What is a Stud Terminal? 8240 Items
A Stud Terminal (TERMINAL,STUD) is a terminal, generally postlike, having an axial portion of its body designed for projecting through or into a panel, or the like, for mounting. Requires the use of tool(s) for attachment of wire. The conductor connection may be insulated from the mounting. Excludes TERMINAL, FEEDTHRU. See also TERMINAL, QUICK DISCONNECT and TERMINAL SET, QUICK DISCONNECT.
What is an Electrical Conductor Ferrule? 1355 Items
An Electrical Conductor Ferrule (FERRULE,ELECTRICAL CONDUCTOR) is an item of one piece construction designed to be permanently fastened to the end of an electrical wire or cable in order to facilitate the insertion of the conductor into devices such as clamps, splices, and terminals. It may also be used to water seal insulated wires. Excludes items designed to mate with a specific connector or jack. See also PLUG, TIP; and JACK TIP. Excludes FERRULE, METALLIC SHIELDED CABLE, GROUNDING. For items with other than cylindrical mating end, see TERMINAL, QUICK DISCONNECT.
What is a Terminal Board Assembly? 897 Items
A Terminal Board Assembly is two or more terminal boards having a common mounting or mounted on each other.
What is a Grounding Terminal Strip? 1666 Items
A Grounding Terminal Strip (TERMINAL STRIP,GROUNDING) is a rigid metallic item of electrically conductive material. It is designed with terminal(s) and/or wire-accommodating holes on one end and facilities for connection to another conductive surface on the other end. For items without terminals or wire-accommodating facilities, see PLATE, ELECTRICAL GROUNDING; CONTACT STRIP, RADIO FREQUENCY GROUNDING; and STRIP, ELECTRICAL GROUNDING.
What is a Terminal Shield? 130 Items
A Terminal Shield (SHIELD,TERMINAL) is a metallic item specifically designed to inclose one or more TERMINAL (1) (as modified) which is not an integral part of the shield. It is designed to be attached to a component at a point where external electrical connections are made, and provides the means for attaching and/or completing the electrostatic shielding of an electrical system. It may have provisions for the passage of wire or cable and may include a cover. Excludes CHAMBER, CABLE TERMINAL; COVER, ELECTRICAL CONNECTOR; COVER, TERMINAL BOARD; SHIELD, ELECTRICAL CONNECTOR; and SHIELD, TERMINAL BOARD.
What is a Terminal Board Shield? 146 Items
A Terminal Board Shield (SHIELD,TERMINAL BOARD) is a metallic item specifically designed to inclose one or more TERMINAL BOARD which is not an integral part of the shield. It is designed to be attached to a component at a point where external electrical connections are made, and provides the means for attaching and/or completing the electrostatic shielding of an electrical system. It may have provisions for the passage of wire or cable and may include a cover. Excludes COVER, TERMINAL BOARD and SHIELD, TERMINAL.
What is a Radio Frequency Grounding Contact Strip? 696 Items
A Radio Frequency Grounding Contact Strip (CONTACT STRIP,RADIO FREQUENCY GROUNDING) is a semirigid metallic item of electrically conductive material designed for the specific purpose of grounding and/or bonding radio frequency equipment. It is normally attached to one item to give spring action to form a ground and/or bond with another item. Excludes TERMINAL STRIP, GROUNDING; CONTACT, ELECTRICAL; and STRIP, ELECTRICAL GROUNDING.
What is a Sectional Terminal Junction Block? 2460 Items
A Sectional Terminal Junction Block (TERMINAL JUNCTION BLOCK,SECTIONAL) is an electrical item with multiple socket contacts which may or may not be interconnected by bussing, to form one or more circuits. Item may be of feedback, feedthrough and/or terminating design and may afford a convenient method of interconnection. It may or may not include a sealing grommet. Sectional blocks are normally retained in a track or channel mounting. Excludes CHAMBER, CABLE TERMINAL; CONTACT ASSEMBLY, ELECTRICAL; INSERT, ELECTRICAL CONNECTOR; JUNTION BOX ; TERMINAL BOARD; and TERMINAL BOX.
What is a Terminal Junction Parts Kit? 57 Items
A Terminal Junction Parts Kit (PARTS KIT,TERMINAL JUNCTION) is a group of electrical items not having the same item name, but consisting of one or more insulated terminal junctions and a number of terminal fittings in each unit. The kit may include plug, end seal, and electrical connector(s).
What is a Feedthru Terminal? 2605 Items
A Feedthru Terminal (TERMINAL,FEEDTHRU) is a terminal designed to be mounted on a chassis or other partition, and having through connected wire mounting facilities. It may or may not be insulated. It is fabricated into a single item whose parts are not separable. For items whose parts are separable, see INSULATOR, FEEDTHRU.
What is a Grounding Metallic Shielded Cable Ferrule? 739 Items
A Grounding Metallic Shielded Cable Ferrule (FERRULE,METALLIC SHIELDED CABLE,GROUNDING) is an item of one or more piece construction designed to be affixed to the outer, or shielding, conductor of CABLE (as modified) to simplify grounding of the outer conductor and/or to anchor the cable to prevent fraying or slipping. For items used with other than shielded cable, see FERRULE, ELECTRICAL CONDUCTOR.
What is a Terminal Board Marker Strip? 1484 Items
A Terminal Board Marker Strip (MARKER STRIP,TERMINAL BOARD) is an item, generally of insulating material, designed to identify terminal position on terminal boards. Its thickness is small in comparison to its length and width. They can be printed to show terminal designations by numbers, letters, symbols, or any combination thereof. It may serve as insulation between terminal board and chassis. Excludes MARKER, IDENTIFICATION and PLATE, DESIGNATION.
What is a Terminal Board Marker Strip Holder? 33 Items
A Terminal Board Marker Strip Holder (HOLDER,MARKER STRIP,TERMINAL BOARD) is a holder designed to mount a MARKER STRIP, TERMINAL BOARD.
What is a Terminal Cover? 328 Items
A Terminal Cover (COVER,TERMINAL) is a cover specifically designed to enclose one or more TERMINAL (as modified) against damage, shorting and/or grounding. May have provisions for the passage of wire or cable. For covers designed to enclose or protect a terminal board, see COVER, TERMINAL BOARD. Excludes COVER, ELECTRICAL CONNECTOR; COVER, SWITCH TERMINAL; and COVER, TERMINAL BOX.
What is a Quick Disconnect Splice Set? 122 Items
A Quick Disconnect Splice Set (SPLICE SET,QUICK DISCONNECT) is a group of items consisting of mating terminals, or terminals with a joining device, designed to expedite or simplify the connection of two or more electrical wires without bringing them to a fixed point such as a binding post or terminal. It allows for simple, rapid separation of the spliced wires without the use of tools. May include an insulation sleeve. See also SPLICE, CONDUCTOR.
What is a Quick Disconnect Terminal? 3392 Items
A Quick Disconnect Terminal (TERMINAL,QUICK DISCONNECT) is a terminal which is a component of a TERMINAL SET, QUICK DISCONNECT or a SPLICE SET, QUICK DISCONNECT, and incorporates a means permitting its rapid engagement and disengagement, without the use of tools, to a mating part(s). It is designed either for attachment to a stud, post, chassis, or the like, or for permanent attachment to an electrical wire or cable. For items with cylindrical mating ends, see FERRULE, ELECTRICAL CONDUCTOR.
What is a Quick Disconnect Terminal Set? 123 Items
A Quick Disconnect Terminal Set (TERMINAL SET,QUICK DISCONNECT) is a group of items which, when combined, conform with the definition of TERMINAL, LUG or TERMINAL, STUD. It also provides the additional feature of allowing the conductor accommodation facility(ies) of the lug or stud to be simply and rapidly separated from the mounted (fixed) position of the lug or stud without the use of tools. See also TERMINAL, LUG and TERMINAL, STUD.
TERMINAL,TAPER PIN,ELECTRICAL 139 Items
What is an Electrical Taper Receptacle Terminal? 85 Items
An Electrical Taper Receptacle Terminal (TERMINAL,TAPER RECEPTACLE,ELECTRICAL) is a female terminal having a formed tapered internal longitudinal center. It is designed for the entrance of a mating TERMINAL, TAPER PIN, ELECTRICAL. The receptacle is generally used for in-line connection. Excludes JACK, TIP; and TERMINAL STUD.
What is a Lug Terminal Set? 38 Items
A Lug Terminal Set (TERMINAL SET,LUG) is a collection of two or more TERMINAL,LUG having different characteristics. It may or may not include a CRIMPING TOOL,TERMINAL,HAND.
What is an Acoustical Headset? 219 Items
An Acoustical Headset (HEADSET,ACOUSTICAL) is a nonelectrical item consisting of sound conducting tubing and receivers which are attached to the end(s) of the tubing. The receivers are shaped to fit the ear of the wearer. It is designed to carry sound, produced by another item, to the ear. May include diaphragm, resonant chambers, yoke and/or headband. Excludes STETHOSCOPE.
What is an Earphone Element? 346 Items
An Earphone Element is the internal fabrication of an earphone. It may include a diaphragm but does not include shell, earpiece, or a connecting cord.
What is a Loudspeaker Horn? 231 Items
A Loudspeaker Horn (HORN,LOUDSPEAKER) is an acoustic transformer with varying cross-sectional area designed to effectively radiate acoustic energy for reception at a distance. Includes multicellular types. Does not include a diaphragm or driver.
What is an Earphone? 585 Items
An Earphone is an item which converts electrical current variations into sound waves and which is designed to be placed against the ear or against the opening of the auditory canal. For one or two earphones mounted on a headband, see HEADSET, ELECTRICAL.
What is an Acoustical Filter? 197 Items
An Acoustical Filter (FILTER,ACOUSTICAL) is an item specifically designed to absorb certain audio frequencies.
What is a Loudspeaker-Microphone? 445 Items
A Loudspeaker-Microphone is an item consisting of a loudspeaker and a microphone housed in a common case. It may or may not include electronic circuitry to control its operation. Transmit-receive switching may be controlled by automatic, manual or remote operation. For a loudspeaker used as a microphone, see LOUDSPEAKER, (as modified).
What is a Loudspeaker Cone? 31 Items
A Loudspeaker Cone (CONE,LOUDSPEAKER) is a conical-shaped diaphragm of a loudspeaker. It may include a voice coil. See also DIAPHRAGM, LOUDSPEAKER DRIVER.
What is a Loudspeaker Assembly? 688 Items
A Loudspeaker Assembly is two or more loudspeakers on a common mounting or mounted on each other. It does not include one loudspeaker with accessories such as transformer, case or resistors. For coaxial loudspeakers which are not readily separable, see LOUDSPEAKER (as modified).
What is a Microphone Element? 663 Items
A Microphone Element is a complete fabrication of the essential internal operating parts of a microphone.
What is a Capacitor Microphone? 478 Items
A Capacitor Microphone (MICROPHONE,CAPACITOR) is a microphone which depends for its operation upon variation of its electrostatic capacitance.
What is a Carbon Microphone? 103 Items
A Carbon Microphone (MICROPHONE,CARBON) is a microphone which depends for its operation upon the variation in resistance of carbon granules.
What is a Ceramic Microphone? 33 Items
A Ceramic Microphone (MICROPHONE,CERAMIC) is a microphone which depends upon the generation of an electrical charge by the deformation of a ceramic element for its operation.
What is a Crystal Microphone? 122 Items
A Crystal Microphone (MICROPHONE,CRYSTAL) is a microphone which depends for its operation upon the generation of an electrical charge by the deformation of a crystal having piezoelectric properties.
What is a Dynamic Microphone? 1711 Items
A Dynamic Microphone (MICROPHONE,DYNAMIC) is a microphone which depends for its operation upon the generation of an electromotive force by the motion of a moving coil within a magnetic field.
What is a Magnetic Microphone? 355 Items
A Magnetic Microphone (MICROPHONE,MAGNETIC) is a microphone which depends for its operation upon variations in reluctance of a magnetic circuit.
What is a Ribbon Microphone? 13 Items
A Ribbon Microphone (MICROPHONE,RIBBON) is a microphone which depends for its operation upon variations in the electromotive force generated in a metallic ribbon within a magnetic field or the change in resistance of a suspended hot wire due to the change in temperature caused by the cooling effect of the particle velocity of a sound wave.
COVER,LOUDSPEAKER 214 Items
COVER,MICROPHONE 145 Items
What is a Microphone Mouthpiece? 119 Items
A Microphone Mouthpiece (MOUTHPIECE,MICROPHONE) is an item attached to a microphone for the purpose of directing sound waves into the microphone element. It is usually tubular or cupped shaped. For items which are essentially flat and which have no specific directional properties, see CAP, ELECTRICAL.
What is a Microphone Shield? 164 Items
A Microphone Shield (SHIELD,MICROPHONE) is an item designed to be added to a MICROPHONE (1) (as modified) to protect the microphone diaphragm from condensed moisture originating from the operator's breath when in use, and/or to protect the microphone elements from dust or other foreign particles.
What is an Electrical Headset-Chest Set? 80 Items
An Electrical Headset-Chest Set (HEADSET-CHEST SET,ELECTRICAL) is a device consisting of one or two earphones with necessary supporting means, a chest harness and a chest mounted microphone. Includes connecting cords. May include junction box, switches, and/or connectors. See also HEADSET-MICROPHONE.
What is an Electromagnetic Loudspeaker? 977 Items
An Electromagnetic Loudspeaker (LOUDSPEAKER,ELECTROMAGNETIC) is a loudspeaker whose diaphragm movements are produced by a coil or iron armature moving in the field of an electromagnet or a fixed coil.
What is an Electrical Headset? 1803 Items
An Electrical Headset (HEADSET,ELECTRICAL) is an item consisting of one or two earphones with a connecting cord and with or without a headband. Single headphone type must include facilities as required for use. For items without earphones designed to protect the ears from noise, see PROTECTOR, HEARING.
What is a Handset? 1776 Items
A Handset is a hand-held device in which are inclosed a telephone type earphone and a telephone type microphone. May include cords, connectors and switches. See also HANDLE, HANDSET.
What is a Microphone Hanger? 40 Items
A Microphone Hanger (HANGER,MICROPHONE) is an item primarily designed to suspend and support a microphone when not in use.
What is a Handset Holder? 432 Items
A Handset Holder (HOLDER,HANDSET) is an item specifically designed to mechanically accommodate, suspend, and/or position a handset when not in use. May include locking device. Does not establish switching facilities.
What is a Headset Holder? 107 Items
A Headset Holder (HOLDER,HEADSET) is an item specifically designed to mechanically accommodate, suspend, and/or position one or more headsets when not in use. May include locking device. Does not inclose headset. See also BOX, HEADSET STORAGE.
HOLDER,MOUTHPIECE 25 Items
What is an Earphone Diaphragm? 19 Items
An Earphone Diaphragm (DIAPHRAGM,EARPHONE) is an item in the form of a thin flexible sheet which is part of an earphone and is used to convert magnetic or mechanical energy into sound waves.
What is a Microphone Diaphragm? 29 Items
A Microphone Diaphragm (DIAPHRAGM,MICROPHONE) is an item in the form of a thin flexible sheet which can be flexed by sound waves impressed upon it directly or indirectly utilizing this action in a microphone to convert sound waves into corresponding audio frequency electrical energy.
What is an Earphone Shell? 313 Items
An Earphone Shell (SHELL,EARPHONE) is the inclosing case which houses the electrical and acoustical elements of a headphone. May include the acoustical elements.
What is a Microphone Shell? 78 Items
A Microphone Shell (SHELL,MICROPHONE) is the inclosing case which houses the elements of a microphone.
BASE,STAND 233 Items
What is a Microphone Bracket? 99 Items
A Microphone Bracket (BRACKET,MICROPHONE) is see also ARM, MICROPHONE; BOOM, MICROPHONE; HOLDER, MICROPHONE and STAND, MICROPHONE.
HOLDER,MICROPHONE 209 Items
What is a Headset-Microphone? 3328 Items
A Headset-Microphone is an item consisting of a HEADSET, ELECTRICAL and a MICROPHONE (as modified) mounted on or supported from the head. It may include connecting cords, plugs, jacks, and switches. See also HEADSET-CHEST SET, ELECTRICAL.
What is a Headset Storage Box? 36 Items
A Headset Storage Box (BOX,HEADSET STORAGE) is a box designed for the protection and storage of one or more headsets and accessories.
CASE,LOUDSPEAKER 83 Items
CASE,MICROPHONE 36 Items
What is a Handset Handle? 150 Items
A Handset Handle (HANDLE,HANDSET) is that portion of a handset which is shaped to be grasped during use, and which contains provisions for mounting or inclosing the electrical elements. It may include items such as contacts, capacitors, resistors, switch, or have dial and/or switch, or have dial and/or switch mounting facilities. May include transmitting or earphone element but not both. See also HANDSET.
What is a Headset Headband? 255 Items
A Headset Headband (HEADBAND,HEADSET) is an item which adjusts to the head and is designed to accommodate one or more telephone receivers. It may include cords and facilities for mounting a microphone or a telephone type transmitter but does not include receivers, microphones, or transmitters. See also HEADSET, ELECTRICAL and HARNESS (as modified).
What is a Microphone Boom? 156 Items
A Microphone Boom (BOOM,MICROPHONE) is a projecting spar or outrigger-like structure which is used to suspend, position and/or support a microphone. May be adjustable. See also ARM, MICROPHONE; and STAND, MICROPHONE.
What is a Loudspeaker Driver Diaphragm? 40 Items
A Loudspeaker Driver Diaphragm (DIAPHRAGM,LOUDSPEAKER DRIVER) is an item which is a part of a loudspeaker driver and which is vibrated by mechanical, magnetic or electrical means to produce air waves at audio frequencies. It may include a voice coil. See also CONE, LOUDSPEAKER.
What is a Permanent Magnet Loudspeaker? 2930 Items
A Permanent Magnet Loudspeaker (LOUDSPEAKER,PERMANENT MAGNET) is a loudspeaker whose diaphragm movements are produced by a coil or iron armature moving in the field of a permanent magnet.
What is a Loudspeaker Driver? 108 Items
A Loudspeaker Driver (DRIVER,LOUDSPEAKER) is a device which converts electrical energy of audio frequencies into audible sound energy and is primarily designed to be used as the actuating mechanism of a LOUDSPEAKER (as modified).
What is an Electrical Chest Set? 34 Items
An Electrical Chest Set (CHEST SET,ELECTRICAL) is a microphone designed to be worn on the chest of the user. It may include connectors, cords, jacks, and harness. A chest set with a headset is termed a HEADSET-CHEST SET, ELECTRICAL.
What is a Microphone Arm? 87 Items
A Microphone Arm (ARM,MICROPHONE) is a rigid piece or part designed to be attached to another item or to other than a horizontal mounting surface for the purpose of supporting, suspending or positioning a microphone. May be adjustable. See also BOOM, MICROPHONE; and STAND, MICROPHONE.
What is a Loudspeaker Stand? 109 Items
A Loudspeaker Stand (STAND,LOUDSPEAKER) is an item specifically designed to mount and/or support a loudspeaker(s) in a desired position from a horizontal mounting surface.
What is a Microphone Stand? 186 Items
A Microphone Stand (STAND,MICROPHONE) is an item specifically designed to mount and/or support a microphone in a desired position from a horizontal surface. May be adjustable. See also BOOM, MICROPHONE; and ARM, MICROPHONE.
What is a Chest Set Harness? 37 Items
A Chest Set Harness (HARNESS,CHEST SET) is an item consisting of adjustable straps or bands specially designed for supporting and positioning a chest set. See also HARNESS, MICROPHONE.
What is a Microphone Harness? 32 Items
A Microphone Harness (HARNESS,MICROPHONE) is an item consisting of adjustable straps or bands specially designed for supporting and positioning a microphone. For items used with chest supported microphones, see HARNESS, CHEST SET.
What is a Handset Adapter? 29 Items
A Handset Adapter (ADAPTER,HANDSET) is an item constructed to establish the necessary accommodations to connect two or more items, one or both being a handset, whose physical design or function will not normally warrant their connection. Does not include ADAPTER, CONNECTOR.
What is a Headset Adapter? 145 Items
A Headset Adapter (ADAPTER,HEADSET) is an adapter designed to connect two or more items, one or both being a headset. Does not include ADAPTER, CONNECTOR.
What is a Headset-Microphone Adapter? 133 Items
A Headset-Microphone Adapter (ADAPTER,HEADSET-MICROPHONE) is an adapter designed to connect two or more items, one or both being a headset-microphone whose design or function will not normally warrant their connection. Excludes ADAPTER, CONNECTOR.
What is a Microphone Adapter? 97 Items
A Microphone Adapter (ADAPTER,MICROPHONE) is an adapter designed to connect two or more items, one or both being a microphone. Does not include ADAPTER, CONNECTOR.
What is an Ear Cushion? 556 Items
An Ear Cushion (CUSHION,EAR) is an item made of soft material(s) designed to fit on an earphone shell of an electrical headset or on the muff of a hearing protector by a positive means of attachment, such as an elastic band or a clamp ring. Its purpose is to prevent external noises from reaching the ears of the user and to lessen physical discomfort occasioned by continuous use.
What is a Crystal Loudspeaker? 40 Items
A Crystal Loudspeaker (LOUDSPEAKER,CRYSTAL) is a loudspeaker whose diaphragm movements are produced by the piezoelectric (crystal) element through which audio frequency current is flowing.
What is a Loudspeaker-Control Unit? 23 Items
A Loudspeaker-Control Unit is a LOUDSPEAKER, CRYSTAL which has a control unit that allows a radio set to be turned on and off from a remote area.
What is a Handset Storage Box? 27 Items
A Handset Storage Box (BOX,HANDSET STORAGE) is a box designed for the protection and storage of one or more telephone handsets when not in use. May include handset holder.
What is a Loudspeaker-Amplifier? 373 Items
A Loudspeaker-Amplifier is an item having the dual functions of a LOUDSPEAKER (as modified) and an AMPLIFIER, AUDIO FREQUENCY. May include volume control, on/off switch, connecting facilities, mounting hardware and/or an enclosure.
What is an Electrical And Electronic Equipment Modification Kit? 261 Items
An Electrical And Electronic Equipment Modification Kit (MODIFICATION KIT,ELECTRICAL AND ELECTRONIC EQUIPMENT) is an item or collection of items employed to modify electrical and electronic equipment.
What is a Stealthy Electrical Headset-Microphone? 27 Items
A Stealthy Electrical Headset-Microphone (HEADSET-MICROPHONE,ELECTRICAL,STEALTHY) is a device generally consisting of one earphone with a coiled acoustic tube, adiscreet microphone which may be operated by a PTT button, a junction box and the necessary connecting wires. The microphone may be attached to a clothing clip. This item may include a carrying poach, foam earbud covers, and a set of different types of earphones. Some models include two earphones. This item provides a discreet means of communication for bodyguards, agents or military personnel participating in covert operations. Excludes HEADSET-CHEST SET, ELECTRICAL (00710); and HEADSET-MICROPHONE (02928).
What is a Quartz Crystal Unit Set? 208 Items
A Quartz Crystal Unit Set (CRYSTAL UNIT SET,QUARTZ) is a grouping of two or more individual quartz crystal units.
What is a Quartz Crystal Unit? 42978 Items
A Quartz Crystal Unit (CRYSTAL UNIT,QUARTZ) is an item which consists of a quartz crystal resonator(s), suitably mounted in a HOLDER, QUARTZ CRYSTAL.
What is a Quartz Crystal Holder? 33 Items
A Quartz Crystal Holder (HOLDER,QUARTZ CRYSTAL) is an item designed to mechanically and electrically accommodate one or more crystal plates. It may include integral facilities for temperature control and/or capacitor(s). See also HOLDER, SEMICONDUCTOR DEVICE.
What is a Pulse Delay Oscillator? 74 Items
A Pulse Delay Oscillator (OSCILLATOR,PULSE DELAY) is an electronic device which generates alternating current power at a frequency(ies) determined by the values of certain constants in its circuits. It is characterized by a network in the input and/or output circuits which causes a delay in transmission of a trigger pulse of predetermined width for a definite time interval. See also DELAY LINE.
COVER,OSCILLATOR 79 Items
What is a Crystal Holder Retainer? 88 Items
A Crystal Holder Retainer (RETAINER,CRYSTAL HOLDER) is an item of unusual or unique construction specifically designed to restrain the movement of a HOLDER (1), CRYSTAL UNIT when mounted in another item.
What is a Crystal Unit Holder? 121 Items
A Crystal Unit Holder (HOLDER,CRYSTAL UNIT) is a holder designed to be used with a crystal unit. For those items which contain provisions for gripping terminals, see SOCKET (as modified). See also HOLDER, SEMICONDUCTOR DEVICE.
What is an Oscillator Subassembly? 497 Items
An Oscillator Subassembly is two or more different types of items, having a common mounting or mounted on each other, which together form a portion of an oscillator but which in itself is not a complete functioning item and cannot be assigned a more definite item name.
What is an Oscillating Group? 228 Items
An Oscillating Group is a collection of items, which when used with an electronic set provide facilities for a complete OSCILLATOR (1), CRYSTAL CONTROLLED OR OSCILLATOR (1) NON-CRYSTAL CONTROLLED.
What is a Crystal Controlled Oscillator? 7317 Items
A Crystal Controlled Oscillator (OSCILLATOR,CRYSTAL CONTROLLED) is an oscillator whose operating frequency(ies) is controlled by a CRYSTAL UNIT, QUARTZ. For an oscillator controlled by a device other than a crystal, see OSCILLATOR (1), NONCRYSTAL CONTROLLED. See also GENERATOR, SIGNAL; and CALIBRATOR, FREQUENCY. Excludes FREQUENCY SUPPLY, TELEPHONE CARRIER; RESONATOR, TUNING FORK; and OSCILLATOR, PULSE DELAY.
What is a Noncrystal Controlled Oscillator? 2332 Items
A Noncrystal Controlled Oscillator (OSCILLATOR,NONCRYSTAL CONTROLLED) is an oscillator whose operating frequency(ies) is controlled by an electronic device other than a CRYSTAL UNIT, QUARTZ. For an oscillator controlled by a crystal, see OSCILLATOR (1), CRYSTAL CONTROLLED. See also GENERATOR, SIGNAL; and CALIBRATOR, FREQUENCY. Excludes FREQUENCY SUPPLY, TELEPHONE CARRIER; RESONATOR, TUNING FORK; and OSCILLATOR, PULSE DELAY.
What is an Electrical-Electronic Components Oven? 350 Items
An Electrical-Electronic Components Oven (OVEN,ELECTRICAL-ELECTRONIC COMPONENTS) is an electrically heated compartment designed to accommodate and maintain at an essentially constant temperature, one or more components, such as, CRYSTAL UNIT(S), QUARTZ; tuned circuits; integrated circuit devices; and semiconductors. It prevents frequency drift and changes in teperature.
COVER,QUARTZ CRYSTAL HOLDER 13 Items
What is an Inductive Proximity Detector? 161 Items
An Inductive Proximity Detector (DETECTOR,PROXIMITY,INDUCTIVE) is a device which uses an oscillator generated alternating magnetic field to detect the presence and/or position of foreign objects within a limited field of view. The item's field of view is very small when compared to security type motion detectors. See also; TRANSDUCER, MOTIONAL PICKUP (6695); and MOTION DETECTOR (6350).
What is a Transducer Ceramic Crystal? 61 Items
A Transducer Ceramic Crystal (CRYSTAL,CERAMIC,TRANSDUCER) is a synthetic fabricated piezoelectric item which, upon completion of all manufacturing processes is designed for use in an electromechanical transducer. It may include electrodes adherent to the crystal.
ADAPTER,SYNCHRO 113 Items
COVER,SYNCHRO RECEIVER MOUNT 36 Items
What is a Differential Receiver Synchro? 98 Items
A Differential Receiver Synchro (SYNCHRO,DIFFERENTIAL RECEIVER) is a synchro, the rotor of which is free to turn, which will assume a position in accordance with the sum or difference of the electrical angular information received from two transmitter synchros. Does not include variable resistors, goniometers, variable transformers, or items with dials.
What is a Differential Transmitter Synchro? 448 Items
A Differential Transmitter Synchro (SYNCHRO,DIFFERENTIAL TRANSMITTER) is a synchro, the rotor of which is mechanically positioned for modifying electrical angular information, received from a transmitter synchro and transmitting to receiver synchro or control transformer synchro electrical information corresponding to the sum or difference of the electrical input angle and its rotor position angle. Does not include variable resistors, goniometers, variable transformers, or items with dials.
What is a Receiver Synchro? 564 Items
A Receiver Synchro (SYNCHRO,RECEIVER) is a synchro consisting of a stator and rotor inductively coupled. The rotor is free to turn in accordance with the electrical input from a transmitter synchro or a differential synchro. Does not include variable resistors, goniometers, variable transformers, or items with dials.
What is a Transmitter Synchro? 1377 Items
A Transmitter Synchro (SYNCHRO,TRANSMITTER) is a synchro consisting of a stator and rotor inductively coupled. The electrical output of the stator into a receiver synchro, a control transformer or differential synchro is dependent upon the position of its rotor. Does not include variable resistors, goniometers, variable transformers, or items with dials.
What is a Control Transformer Synchro? 933 Items
A Control Transformer Synchro (SYNCHRO,CONTROL TRANSFORMER) is a synchro consisting of a stator and rotor inductively coupled. The electrical output of the rotor is dependent upon both the position of the rotor and the electrical input to the stator from a transmitter synchro or a differential synchro. Does not include variable resistors, goniometers, or variable transformers.
What is an Electrical Resolver? 1311 Items
An Electrical Resolver (RESOLVER,ELECTRICAL) is an item consisting of a rotor and a stator inductively coupled. It usually has two rotor windings displaced from each other by 90 degrees and two stator windings similarly displaced. The output voltage(s) is a trigonometric function of the input voltage(s) and the angular displacement of the rotor with respect to the stator. See also SYNCHRO (as modified) and GONIOMETER, ELECTRICAL. Excludes TRANSOLVER, ELECTRICAL and potentiometer sine/cosine electrical resolvers.
What is a Receiver-Transmitter Synchro? 96 Items
A Receiver-Transmitter Synchro (SYNCHRO,RECEIVER-TRANSMITTER) is a synchro having a dual purpose. It may be used in applications requiring either a receiver or transmitter. For synchros having a single purpose, see SYNCHRO, RECEIVER and SYNCHRO, TRANSMITTER.
What is a Linear Electrical Resolver? 148 Items
A Linear Electrical Resolver (RESOLVER,ELECTRICAL,LINEAR) is an item consisting of a stator and rotor inductively coupled which provides accurate linear indication of shaft rotation about a reference position in the form of a polarized voltage whose magnitude is proportional to angular displacement and phase relationship indicates direction of shaft rotation. Its windings and slots are not uniformly distributed, but instead are deliberately modified to produce a linear output which is usually limited to less than plus or minus 90 degrees of effective electrical travel. Normally it has only one energization winding and one output winding. See also RESOLVER, ELECTRICAL.
What is an Electrical Transolver? 45 Items
An Electrical Transolver (TRANSOLVER,ELECTRICAL) is an item consisting of a rotor and a stator inductively coupled. It has wye connected and quadrature windings, either of which can be stator or the rotor and serve as the Primary for input voltages. The output voltages are trigonometric functions of the input voltages and the angular displacement of the rotor with respect to the stator. See also SYNCHRO (as modified). Excludes RESOLVER, ELECTRICAL and potentiometer sine/cosine electrical resolvers.
What is a Shaft Angle To Digital Encoder? 687 Items
A Shaft Angle To Digital Encoder (ENCODER,SHAFT ANGLE TO DIGITAL) is an electromechanical device, the electrical output of which represents in digital form a mathematical function of the angular position of the input shaft. See also CONVERTER, ANALOGUE TO DIGITAL.
What is a Synchro Rotor? 81 Items
A Synchro Rotor (ROTOR,SYNCHRO) is a rotor which is part of a synchro.
What is a Synchro Stator? 100 Items
A Synchro Stator (STATOR,SYNCHRO) is a stator which is a part of a synchro.
What is a Synchro Assembly? 271 Items
A Synchro Assembly is two or more synchros on a common mounting or mounted on each other. Do not use this name for single synchros mounted with common synchro accessories such as pulleys, gear reduction units, starting mechanisms.
What is a Telephone Cable Assembly? 2653 Items
A Telephone Cable Assembly (CABLE ASSEMBLY,TELEPHONE) is a definite continuous length of CABLE, TELEPHONE having one or both ends processed and/or terminated in fittings which provide for connection to other items. Excludes items having branches or forks. See also CORD ASSEMBLY, ELECTRICAL.
What is a Wiring Harness? 12685 Items
A Wiring Harness is an item consisting of two or more individually insulated conductors (solid, stranded, or tinsel) of a definite length, with or without shielding, held together by lacing cord, metal bands, or similar type binding. The individual conductors are usually identified by color, or by alphabetic or numeric codes or symbols. The item may include fittings which provide for connection to other items. Excludes items which are branched, forked, jacketed, sleeved, or contained in a common covering. Also excludes CABLE ASSEMBLY (as modified); HARNESS, ELECTRICAL EQUIPMENT; LEAD ASSEMBLY, ELECTRICAL; and WIRING HARNESS, BRANCHED.
What is an Electrical Power Cable Assembly? 12746 Items
An Electrical Power Cable Assembly (CABLE ASSEMBLY,POWER,ELECTRICAL) is a definite continuous length of CABLE, POWER, ELECTRICAL having one or both ends processed and/or terminated in fittings which provide for connection to other items. Excludes CABLE AND CONDUIT ASSEMBLY, ELECTRICAL and items having branches or forks. See also WIRING HARNESS.
What is an Electrical Special Purpose Cable Assembly? 119971 Items
An Electrical Special Purpose Cable Assembly (CABLE ASSEMBLY,SPECIAL PURPOSE,ELECTRICAL) is a definite continuous length of CABLE, SPECIAL PURPOSE, ELECTRICAL, having one or more ends processed or terminated in fittings which provide for connection to other items. Excludes items having branches or forks. Excludes LEAD, TEST and CABLE AND CONDUIT ASSEMBLY, ELECTRICAL.
What is an Electrical Cord Assembly? 5051 Items
An Electrical Cord Assembly (CORD ASSEMBLY,ELECTRICAL) is a definite length of CORD, ELECTRICAL having one or both ends processed and/or terminated in fittings which provide for connection to another item. It is generally used with telephone and communication equipment, such as headsets, category cable and switchboard patch cable. See also CABLE ASSEMBLY, (as modified and LEAD (as modified.)
What is a Radio Frequency Cable Assembly? 91999 Items
A Radio Frequency Cable Assembly (CABLE ASSEMBLY,RADIO FREQUENCY) is a definite length of CABLE, RADIO FREQUENCY having one or both ends processed and/or terminated in fittings which provide for connection to other items. Includes multiple cable assemblies in a common jacket or shield. Excludes items having branches or forks and LEAD, TEST. See also CABLE ASSEMBLY, RADIO FREQUENCY, BRANCHED.
What is an Antenna Patching Panel? 118 Items
An Antenna Patching Panel (PANEL,PATCHING,ANTENNA) is an item on which are mounted plugs, sockets, and the like, and which are provided a point at which a radio set may be connected to various antennas or antenna arrays by means of patch cords, U-links, or similar methods. May include an indicator for display of output power from the radio transmitter.
What is an Electrical Lead? 6601 Items
An Electrical Lead (LEAD,ELECTRICAL) is a definite length of one-conductor electrical wire, wire braid, or other conductive material, except cable or cord, one or both ends of which are processed or terminated. The lead may be of any size or shape, insulated or uninsulated. See also LEAD, TEST and BUS CONDUCTOR. Excludes LEAD, STORAGE BATTERY; LEAD, IGNITION, ENGINE, and items having attached switches, lampholders, suppressors, resistors, and the like.
What is a Cable Assembly Case? 181 Items
A Cable Assembly Case (CASE,CABLE ASSEMBLY) is a case specifically designed to hold one or more cable assemblies.
What is an Electrical Cable Assembly Set? 2745 Items
An Electrical Cable Assembly Set (CABLE ASSEMBLY SET,ELECTRICAL) is a grouping of items having the same basic name for use in connection with, or the performance of, a closely related operation having two or more separate electrical cable assemblies. It may include cable reels and holders. It may or may not be inclosed in separate cases. See also CABLE ASSEMBLY, POWER ELECTRICAL; CABLE ASSEMBLY, SPECIAL PURPOSE, ELECTRICAL; and WIRING HARNESS (as modified).
What is a Cable Assembly And Reel? 597 Items
A Cable Assembly And Reel is an item consisting of a CABLE ASSEMBLY (as modified) and a REEL, CABLE. Designed to facilitate rapid interconnection of dispersed electrical and/or electronic components and for cable storage during transit.
What is an Electrical Lead Set? 160 Items
An Electrical Lead Set (LEAD SET,ELECTRICAL) is two or more different LEAD, ELECTRICAL. For two or more identical items, use LEAD, ELECTRICAL. Excludes LEAD SET, TEST.
What is a Flexible Printed Cable Assembly? 1940 Items
A Flexible Printed Cable Assembly (CABLE ASSEMBLY,PRINTED,FLEXIBLE) is a definite continuous length of flat electrical cable consisting of two or more deposited, etched, or printed conductive paths laminated between insulating films and having one or more ends processed or terminated with facilities which provide for connection to other items. It may also provide facilities for connections to other items at locations other than the ends of the cable. For items with solid and/or stranded conductors, see CABLE (as modified); CABLE ASSEMBLY (as modified); and WIRING HARNESS (as modified). For rigid items consisting only of electrical conductor paths and two or more connectors, see BACKPLANE ASSEMBLY. See also PRINTED CIRCUIT BOARD and PRINTED WIRING BOARD.
What is a Radio Frequency Cable Assembly Set? 913 Items
A Radio Frequency Cable Assembly Set (CABLE ASSEMBLY SET,RADIO FREQUENCY) is a grouping of items having the same basic name for use in connection with, or the performance of a closely related operation having two or more separate CABLE ASSEMBLY, RADIO FREQUENCY. It may or may not be enclosed in separate cases. Excludes CABLE ASSEMBLY, RADIO FREQUENCY; CABLE ASSEMBLY, RADIO FREQUENCY, BRANCHED and WIRING HARNESS (as modified).
What is an Electrical Wiring Harness Set? 210 Items
An Electrical Wiring Harness Set (WIRING HARNESS SET,ELECTRICAL) is a grouping of items having the same basic name for use in connection with, or the performance of a closely related operation having two or more separate WIRING HARNESS. It may or may not be inclosed in separate cases. Excludes WIRING HARNESS; WIRING HARNESS, BRANCHED.
What is an Electronic Supplementary Equipment? 50 Items
An Electronic Supplementary Equipment (SUPPLEMENTARY EQUIPMENT,ELECTRONIC) is a collection of various electronic equipment such as CABLE ASSEMBLY, (as modified); ADAPTER, (as modified); CONVERTERS, (as modified); LEAD SET, ELECTRICAL; DISPLAY UNIT; PRINTER, AUTOMATIC DATA PROCESSING; and the like. Designed to provide inter-connectivity and or intraconnectivity between various configuration of command and control modules, such as COMMAND POST AUTOMATION SYSTEM and COMBAT SUPPORT SYSTEM, CRYPTOLOGIC in the battle field functional area. Excludes INSTALLATION KIT, ELECTRONIC EQUIPMENT. See alsoMODIFICATION KIT, (as modified) and PARTS KIT, (as modified).
What is a Cable Assembly And Reel Cover? 19 Items
A Cable Assembly And Reel Cover (COVER,CABLE ASSEMBLY AND REEL) is a preformed, detachable item made of textiles or plastics and designed to protect a CABLE ASSEMBLY AND REEL against damaging effects such as humidity, soilage and the like. It may also serve as camoflage. The item may consist of several parts and be equipped with fixtures such as straps, ropes and the like. Excludes TARPAULIN.
What is a Branched Radio Frequency Cable Assembly? 1890 Items
A Branched Radio Frequency Cable Assembly (CABLE ASSEMBLY,RADIO FREQUENCY,BRANCHED) is a definite continuous length of CABLE, RADIO FREQUENCY with branches (forks), and having one or more ends processed and/or terminated in fittings which provide for connection to other items. Excludes LEAD, TEST. See also WIRING HARNESS.
What is a Branched Electrical Special Purpose Cable Assembly? 17929 Items
A Branched Electrical Special Purpose Cable Assembly (CABLE ASSEMBLY,SPECIAL PURPOSE,ELECTRICAL,BRANCHED) is a definite continuous length of CABLE, SPECIAL PURPOSE, ELECTRICAL with branches (forks), and having one or more ends processed and/or terminated in fittings to provide for connection to other items. Excludes LEAD, TEST. See also wiring harness.
What is a Branched Telephone Cable Assembly? 120 Items
A Branched Telephone Cable Assembly (CABLE ASSEMBLY,TELEPHONE,BRANCHED) is a definite continuous length of CABLE, TELEPHONE with branches (forks), and having one or both ends processed and/or terminated in fittings which provide for connection to other items. See also CORD ASSEMBLY, ELECTRICAL, BRANCHED.
What is a Branched Electrical Cord Assembly? 302 Items
A Branched Electrical Cord Assembly (CORD ASSEMBLY,ELECTRICAL,BRANCHED) is a definite continuous length of CORD, ELECTRICAL with branches (forks), and having one or more ends processed and/or terminated with fittings which provide for connection to other items. See also WIRING HARNESS, BRANCHED.
What is a Branched Wiring Harness? 7617 Items
A Branched Wiring Harness (WIRING HARNESS,BRANCHED) is an item conforming to the definition of WIRING HARNESS with branches (forks). See also CABLE ASSEMBLY, SPECIAL PURPOSE, ELECTRICAL, BRANCHED, Excludes LEAD ASSEMBLY, ELECTRICAL; and LEAD, TEST.
What is a Branched Electrical Dummy Cable Assembly? 10 Items
A Branched Electrical Dummy Cable Assembly (DUMMY CABLE ASSEMBLY,ELECTRICAL,BRANCHED) is an item designed to occupy the space of a branched electrical power or special purpose cable assembly, without having the electrical characteristics of either cable assembly.
What is an Electrical Ribbon Cable Assembly? 802 Items
An Electrical Ribbon Cable Assembly (CABLE ASSEMBLY,RIBBON,ELECTRICAL) is a definite continuous length of ribbon type CABLE, SPECIAL PURPOSE, ELECTRICAL, having one or more ends (may or may not be branched) and/or intermediate positions processed or terminated with facilities which provide for electrical connections to other items. Excludes CABLE ASSEMBLY, PRINTED, FLEXIBLE; CABLE ASSEMBLY, SPECIAL PURPOSE, ELECTRICAL; AND CABLE ASSEMBY, SPECIAL PURPOSE, ELECTRICAL BRANCHED.
COVER,PHOTOELECTRIC CELL 19 Items
HOLDER,PHOTOELECTRIC CELL 39 Items
What is a Photo Semiconductor Device? 1231 Items
A Photo Semiconductor Device (SEMICONDUCTOR DEVICE,PHOTO) is a Semiconductor Device (1) which is responsive to visible or infrared radiant energy. May or may not include mounting hardware and/or heat sink. Excludes SEMICONDUCTOR DEVICE (1), DIODE; SEMICONDUCTOR DEVICE (1), THYRISTOR AND TRANSISTOR. For solid state devices which emit visible or infrared radiant energy, see LIGHT EMITTING DIODE.
What is a Light Emitting Diode? 7790 Items
A Light Emitting Diode is a two electrode, solid state, optoelectronic device that emits visible or infrared radiant energy when electrically energized. May or may not include mounting hardware and/or heat sink. Excludes LAMP, CARTRIDGE; and LIGHT, INDICATOR. For solid state devices which are responsive to infrared or radiant energy, see SEMICONDUCTOR DEVICE (1), PHOTO.
What is a Semiconductor Device Assembly? 2574 Items
A Semiconductor Device Assembly is a grouping of two or more semiconducting devices such as LIGHT EMITTING DIODE; SEMICONDUCTOR DEVICE, DIODE; SEMICONDUCTOR DEVICE, PHOTO; SEMICONDUCTOR DEVICE, THYRISTOR; and/or TRANSISTOR mounted on a common mounting or mounted on each other. The devices must be separable and each item must be capable of functioning in accordance with its given name. For assemblies consisting of semiconducting devices permanently cased, encapsulated, or potted together to form a single unit, see RECTIFIER, SEMICONDUCTOR DEVICE, UNITIZED and SEMICONDUCTOR DEVICES, UNITIZED. Excludes SEMICONDUCTOR DEVICE SET; MICROCIRCUIT ASSEMBLY; and MICROCIRCUIT SET. See also ABSORBER, OVERVOLTAGE.
What is an Optoelectronic Display? 3247 Items
An Optoelectronic Display (DISPLAY,OPTOELECTRONIC) is a component capable of displaying numeric, alphanumeric, symbolic, or graphic characters utilizing light emitting diode, plasma gas discharge, vacuum fluorescent, or liquid crystal display technology. For items designed to display information of a specific type, see INDICATOR, (as modified).
What is an Optoelectronic Display Control? 88 Items
An Optoelectronic Display Control (CONTROL,OPTOELECTRONIC DISPLAY) is a control that determines the mode of operation of an optoelectronic display.
What is an Optoelectronic Control-Display? 421 Items
An Optoelectronic Control-Display (CONTROL-DISPLAY,OPTOELECTRONIC) is a item composed of a DISPLAY, OPTOELECTRONIC and an integral CONTROL, OPTOELECTRONIC, that performs the dual function of controlling the operational mode of, and presenting numeric, alphanumeric, symbolic, or graphic characters on an optoelectronic display. For items that do not include a control device, see DISPLAY, OPTOELECTRONIC. For items which are designed to display quantitative information in a specific format, see INDICATOR (as modified), and CONTROL-INDICATOR.
What is an Optoelectronic Switch? 262 Items
An Optoelectronic Switch (SWITCH,OPTOELECTRONIC) is a switch designed to perform the function of opening and/or closing one or more electrical circuits. In lieu of seperable contacts, the switching function is accomplished by means of an arrangement of one or more light emitters and one or more photosensitive devices. The item functions in response to changes in its own electrical circuit caused by the emitted light being reflected to the photosensitive device or the emitted light being interrupted before it reaches the photosensitive device. The item has no other form of actuation.
What is an Amplifier-Photoelectric Cell? 17 Items
An Amplifier-Photoelectric Cell is a dual functioning device consisting of an amplifier (1) and an item which directly transforms light energy into corresponding values of electrical energy.
What is an Optoelectronic Coupler? 863 Items
An Optoelectronic Coupler (COUPLER,OPTOELECTRONIC) is a device containing one or more light sources (either incandescent, glow, or solid state, lamps) opticallycoupled to one or more semiconductor type photo-sensitive elements, all of which are contained in an opaque enclosure. Light generated within the device by the application of an appropriate electrical input to the light source(s) acts upon the light sensor(s) to produce a corresponding output or change in some electrical quantity or variation in some electrical property. For items in which the light in directed at another item and the reflected light is interpreted (read) see SCANNER, OPTICAL.
What is a Waveguide Flange? 691 Items
A Waveguide Flange (FLANGE,WAVEGUIDE) is a waveguide fitting with a projecting rim, edge or ridge whose inside dimensions are designed to be affixed to a waveguide for the purpose of joining with another electrical fitting.
What is an Antenna Counterpoise? 68 Items
An Antenna Counterpoise (COUNTERPOISE,ANTENNA) is a conductor or system of conductors, fabricated or arranged in a specific pattern, to simulate the properties of an electrical ground.
What is a Spark Gap? 129 Items
A Spark Gap is an item designed to act as a switching or triggering device by means of a disruptive discharge of electricity (a spark) between the electrodes. The insulation (usually air) between the electrodes is self-restoring after passage of the spark. For spark gaps used as a protective device, see ARRESTER, ELECTRICAL SURGE. For items with additional circuitry which perform complete modulation functions, see MODULATOR, RADAR.
What is a Waveguide Adapter? 2054 Items
A Waveguide Adapter (ADAPTER,WAVEGUIDE) is an item designed to establish the necessary accommodations to connect a waveguide to a coaxial line, or to connect two or more terminated waveguides whose physical design does not normally allow connection.
What is a Mast? 1870 Items
A Mast is an item essentially of columnar shape, having a single footing or mounting base, used to support another item. It may include accessories such as guys, insulators, and collars. See also TOWER. For similar items of this type used to carry power and/or communication lines, see POLE, LINE CONSTRUCTION (as modified)
What is a Mast Section? 1453 Items
A Mast Section is an item that is specially designed and fabricated to be readily assembled together with other sections to form a MAST.
What is a Waveguide Horn? 858 Items
A Waveguide Horn (HORN,WAVEGUIDE) is a hollow conductor of varying cross-sectional area specifically designed to achieve directional characteristics in radio frequency radiating and receiving systems.
What is an Antenna Reflector? 619 Items
An Antenna Reflector (REFLECTOR,ANTENNA) is an object placed at a distance from a source of radiation, and designed to change the direction of incident radiation without appreciable transmission through it. It is used with an antenna. See also ANTENNA ELEMENT.
What is a Waveguide Assembly? 16824 Items
A Waveguide Assembly is an item consisting of one or more definite lengths of straight or formed, flexible or rigid, prefabricated hollow tubing of conductive material. The tubing has a predetermined cross section and is designed to guide or conduct high frequency electromagnetic energy through its interior. One or more ends are terminated. May include common mounting of a SWITCH, WAVE GUIDE, a DUMMY LOAD, ELECTRICAL and other components such as waveguide section, cable terminal chamber and the like. Excludes COUPLER, ROTARY, RADIO FREQUENCY; COUPLER, DIRECTIONAL; ADAPTER, WAVEGUIDE; and TUNER, WAVEGUIDE.
What is a Tuned Cavity? 48 Items
A Tuned Cavity (CAVITY,TUNED) is an inclosure, with a conductive inner wall, whose resonant frequency is determined by its internal dimensions. For calibrated items which are used to measure wavelength or frequency, see WAVEMETER; see also FREQUENCY METER.
What is an Electronic Frequency Converter? 236 Items
An Electronic Frequency Converter (CONVERTER,FREQUENCY,ELECTRONIC) is an electronic device having frequency mixing circuits and an integral oscillator which mixes the incoming frequency(ies) with the oscillator frequency, the resultant frequency(ies) being a combination of the two sources. Includes equipment that performs these functions at either radio or power line frequencies. Excludes items that change frequency by means of rotating equipment or rectifier and switching or keying circuitry.
What is an Electrical Dummy Load? 4757 Items
An Electrical Dummy Load (DUMMY LOAD,ELECTRICAL) is a specific electrical element or set of electrical elements that are connected together to form a fixed arrangement and used as a substitute load for terminating an electrical circuit. A dummy load contains all the essential electrical characteristics necessary to terminate the circuit but does not function in the same manner as the load which it replaces. Examples are resistors used to replace antennas, batteries, loudspeakers, or the like. Includes single port terminations of twin lead, coaxial and waveguide transmission lines as low power terminations of a section of a transmission system in a specified manner. Includes dummy loads when arranged in a group or bank. Excludes power absorbers. See also LOAD BANK, ELECTRICAL.
What is a Waveguide Probe? 282 Items
A Waveguide Probe (PROBE,WAVEGUIDE) is an item terminating a coaxial line whose center conductor is designed to extend beyond the inner surface of a waveguide or resonant cavity. The purpose of the item is to radiate or absorb radio frequency energy. May include connector(s), retainer(s) and/or protective accessory(ies). See also BOLOMETER, RADIO FREQUENCY.
What is an Attenuator Assembly? 350 Items
An Attenuator Assembly is two or more separable ATTENUATOR, FIXED and/or ATTENUATOR, VARIABLE having a common mounting or mounted on each other. Excludes single attenuators with multiple sections. For tandem attenuators actuated by a single shaft, see ATTENUATOR, VARIABLE. Also, see ATTENUATOR SET.
What is a Radio Frequency Rotary Coupler? 1032 Items
A Radio Frequency Rotary Coupler (COUPLER,ROTARY,RADIO FREQUENCY) is an item which provides a means of transfer of electrical energy between two components or sets, and which is specifically designed to permit one section of a transmission line or waveguide to rotate continuously with respect to another, and still maintain radio frequency continuity.
What is a Transmission Line Coupler? 711 Items
A Transmission Line Coupler (COUPLER,TRANSMISSION LINE) is a coupler which permits the passage of electrical energy in either direction between a balanced and an unbalanced transmission line. See also COUPLER, ROTARY, RADIO FREQUENCY.
What is a Directional Coupler? 4198 Items
A Directional Coupler (COUPLER,DIRECTIONAL) is an item specifically designed to be inserted into a transmission line, waveguide or coaxial transmission line to provide a suitable test outlet. The test signal is attenuated to a predetermined value.
What is an Antenna Fairlead? 42 Items
An Antenna Fairlead (FAIRLEAD,ANTENNA) is an item consisting mainly of a plastic, wood, or metallic tube with a funnel shaped end through which a trailing antenna is reeled.
What is a Waveguide? 2407 Items
A Waveguide is an item consisting of a hollow tube of conductive material having a predetermined cross section specifically designed to guide or conduct high frequency electromagnetic energy through its interior. Does not include coaxial cable. Refers to bulk quantities only.
What is an Antenna Control Group? 223 Items
An Antenna Control Group is a collection of items that provides facilities for the control of antenna(s) and associated radome(s).
ANTENNA COUPLER-POWER SUPPLY 57 Items
What is an Antenna Group? 961 Items
An Antenna Group is a collection of items, that provide antenna facilities for the reception and/or transmission of electromagnetic energy.
What is an Antenna Set? 257 Items
An Antenna Set is two or more antennas, or antenna assemblies which are independently mounted.
What is a Radome Interior Control Group? 12 Items
A Radome Interior Control Group is a collection of items, that provide facilities for controlling the interior conditions such as pressure, temperature, humidity, and lighting in a radome.
What is an Antenna Control Subassembly? 328 Items
An Antenna Control Subassembly is two or more different types of items having a common mounting or mounted on each other which together form a portion of an antenna control but which in itself is not a complete functioning item and cannot be assigned a more definite item name.
What is an Antenna Pedestal Subassembly? 470 Items
An Antenna Pedestal Subassembly is two or more different types of items having a common mounting or mounted on each other which together form a portion of an antenna pedestal but which in itself is not a complete functioning item and cannot be assigned a more definite item name.
What is an Antenna Subassembly? 2431 Items
An Antenna Subassembly is two or more different types of items having a common mounting or mounted on each other which together form a portion of an antenna but which in itself is not a complete functioning item and cannot be assigned a more definite item name.
What is an Attenuator Subassembly? 186 Items
An Attenuator Subassembly is two or more different types of items having a common mounting or mounted on each other which together form a portion of an attenuator but which in itself is not a complete functioning item and cannot be assigned a more definite item name.
COVER,ELECTRICAL LOAD DUMMY 27 Items
What is an Antenna? 20711 Items
An Antenna is an item consisting of a conductor or a system of conductors specifically designed to radiate and/or receive electromagnetic waves in free space. May include beam-forming devices, drive motors, synchros, radome, and associated mechanical structure.
What is a Variable Attenuator? 3264 Items
A Variable Attenuator (ATTENUATOR,VARIABLE) is a device for reducing the strength of an alternating current signal either continuously or in steps, without causing appreciable signal distortion, by maintaining substantially constant output and/or input impedance match. Continuously variable resistive devices must consist of at least two sections or one section with at least two rotating contacts. The item must have an overall attenuation rating. Includes tandem mounted variable resistors designed to function as an attenuator but whose terminals are not connected. See also RESISTOR, VAIABLE (as modified).
What is an Antenna Stop? 157 Items
An Antenna Stop (STOP,ANTENNA) is an item designed to check the movement or action of an antenna. Do not use if a more specific item name appears in this index.
What is a Radio Frequency Transmission Line? 1023 Items
A Radio Frequency Transmission Line (LINE,RADIO FREQUENCY TRANSMISSION) is an item designed primarily for the conduction of radio frequency energy, and consisting of two or more conductors supported in fixed spatial relationship(s) along their own length. Since the characteristic impedance of the line is determined by the spatial relationships of the conductors, which are sufficiently rigid to maintain these relationships between supports, the configuration of the item is usually not susceptible to mechanical manipulation; that is, it is not normally flexible. Includes a single conductor inclosed in an outer concentric conductor (coaxial) or two or more conductors laid parallel. All types have low loss or special characteristics at high frequencies. May include fittings or terminations. For items having continuous homogeneous dielectric, see CABLE, RADIO FREQUENCY. See also LINE SECTION, RADIO FREQUENCY TRANSMISSION.
What is an Antenna Control? 765 Items
An Antenna Control (CONTROL,ANTENNA) is an item which provides the means for selecting the mode of operation or to direct the DRIVE, ANTENNA to carry out the input instructions. For items which provide coordinate information, see PROGRAMMER, ANTENNA POSITION.
What is a Radio Frequency Transmission Line Section? 1087 Items
A Radio Frequency Transmission Line Section (LINE SECTION,RADIO FREQUENCY TRANSMISSION) is a fabricated or processed item which forms a portion of a transmission line or which when added to complementary items will form a transmission line or a portion thereof. Do not use if a more specific item name now exists in the index. See also TUNER, TRANSMISSION LINE and LINE, RADIO FREQUENCY TRANSMISSION.
What is a Waveguide Tuner? 86 Items
A Waveguide Tuner (TUNER,WAVEGUIDE) is an item designed to be inserted in a waveguide and which can be controlled to electrically increase or decrease its dimensions so as to minimize the standing wave ratio. See also TUNER, TRANSMISSION LINE.
What is a Waveguide Shutter? 43 Items
A Waveguide Shutter (SHUTTER,WAVEGUIDE) is a waveguide section which contains a switching device to permit the interruption or diversion of the radio frequency energy by means of a mechanical barrier.
What is a Radio Frequency Transmission Line Seal? 56 Items
A Radio Frequency Transmission Line Seal (SEAL,RADIO FREQUENCY TRANSMISSION LINE) is an item designed to provide termination for a gas filled radio frequency transmission line.
What is an Antenna Element? 2709 Items
An Antenna Element is an item which is a single conductor and is designed as a replaceable part of an antenna dipole or antenna.
What is a Waveguide Coupling? 420 Items
A Waveguide Coupling (COUPLING,WAVEGUIDE) is a device specifically designed to conveniently couple and lock together mating surfaces of two adjacent sections of a waveguide.
What is an Antenna Loading Disk? 15 Items
An Antenna Loading Disk (LOADING DISK,ANTENNA) is an item of conductive material, usually of circular or cylindrical shape, designed to be affixed to the top of a vertical antenna to increase its natural wave length.
What is an Antenna Mast Plate? 461 Items
An Antenna Mast Plate (PLATE,ANTENNA MAST) is an item which is rigid or semirigid, flat and generally smooth. Its thickness is small in comparison to both its length and width, and it is so designed as to be used with an antenna mast.
What is an Antenna Coupler Mounting Plate? 121 Items
An Antenna Coupler Mounting Plate (PLATE,MOUNTING,ANTENNA COUPLER) is an item that is rigid, flat, and generally smooth, the thickness of which is small in comparison to its length and width, and which is designed for mounting an antenna coupler.
What is an Antenna Cover Mounting Plate? 81 Items
An Antenna Cover Mounting Plate (PLATE,MOUNTING,ANTENNA COVER) is an item which is rigid, flat, and generally smooth. Its thickness is small in comparison to its length and width, and is designed for mounting an antenna cover.
What is an Antenna Reflector Section? 237 Items
An Antenna Reflector Section (REFLECTOR SECTION,ANTENNA) is an item which is one of the mechanically similar and complementary parts which together form an antenna reflector.
What is a Waveguide Seal? 756 Items
A Waveguide Seal (SEAL,WAVEGUIDE) is an item or assembly designed to be fitted into or external to the end of a waveguide, in order to prevent the entrance of moisture or other foreign matter, without appreciably attenuating radio frequencies. May or may not be pressure proof.
What is an Antenna Support Sleeve? 148 Items
An Antenna Support Sleeve (SLEEVE,ANTENNA SUPPORT) is a cylinder whose ratio of axial length to the outside diameter is four to one or greater, and which is used with an antenna support.
What is an Antenna Support? 2540 Items
An Antenna Support (SUPPORT,ANTENNA) is an item which consists of a mechanical or structural part designed to overcome the force of gravity, but is not intended to be the principal sustaining member of an antenna.
What is an Antenna Horn Support? 78 Items
An Antenna Horn Support (SUPPORT,ANTENNA HORN) is an item which consists of a mechanical or structural part designed to overcome the force of gravity, but is not intended to be the principal sustaining member of an antenna horn.
What is an Antenna Reflector Support? 130 Items
An Antenna Reflector Support (SUPPORT,ANTENNA REFLECTOR) is an item which consists of a mechanical or structural part designed to overcome the force of gravity, but is not intended to be the principal sustaining member of an antenna reflector.
What is a Radio Frequency Transmission Line Support? 95 Items
A Radio Frequency Transmission Line Support (SUPPORT,RADIO FREQUENCY TRANSMISSION LINE) is an item which consists of a mechanical or structural part designed to overcome the force of gravity, but is not intended to be the principal sustaining member of a radio frequency transmission line.
What is a Waveguide Support? 377 Items
A Waveguide Support (SUPPORT,WAVEGUIDE) is an item which consists of a mechanical or structural part designed to overcome the force of gravity, but is not intended to be the principal sustaining member of a waveguide.
What is an Antenna Support Ring? 68 Items
An Antenna Support Ring (SUPPORT RING,ANTENNA) is an item, circular in design, and consisting of two bearing surfaces and antifriction bearings specifically designed to provide facilities for imparting rotational motion to an antenna mounted on it. It may include items such as synchros, limit switches, and contactors.
What is a Waveguide Vane? 50 Items
A Waveguide Vane (VANE,WAVEGUIDE) is an item in the form of a plate or a knifelike blade designed to be part of a waveguide attenuator or a waveguide shutter.
BASE,ANTENNA SUPPORT 2150 Items
BASE,MAST 332 Items
What is an Antenna Mast Cradle? 68 Items
An Antenna Mast Cradle (CRADLE,ANTENNA MAST) is a support or frame which is shaped to conform generally to the contour of an antenna mast and which is used to hold the mast when not in use.
What is an Antenna Reflector Cradle? 12 Items
An Antenna Reflector Cradle (CRADLE,ANTENNA REFLECTOR) is a support or frame which is shaped to conform generally to the contour of an antenna reflector, and which is used to hold an antenna reflector when not in use.
HOLDER,ANTENNA COUPLER 75 Items
HOLDER,SPARK GAP 18 Items
What is a Radome Inflation Control? 12 Items
A Radome Inflation Control (CONTROL,INFLATION,RADOME) is an item which controls the mode of operation of fans, pumps or other means of inflating a radome. It may include indicating instruments, relays, manual adjustments, fuse holders, switches.
What is an Antenna Spreader? 82 Items
An Antenna Spreader (SPREADER,ANTENNA) is an item specifically designed to space or hold apart the free swinging electrical conductors of an antenna or counterpoise. Usually includes grooves or fittings for attachment of conductors and for a bridle used to attach the antenna to a mast or other support. For similar items specifically designed for insulating purposes, see INSULATOR (applicable modifier).
What is an Antenna Patching Panel? 118 Items
An Antenna Patching Panel (PANEL,PATCHING,ANTENNA) is an item on which are mounted plugs, sockets, and the like, and which are provided a point at which a radio set may be connected to various antennas or antenna arrays by means of patch cords, U-links, or similar methods. May include an indicator for display of output power from the radio transmitter.
What is a Transmission Line Tuner? 76 Items
A Transmission Line Tuner (TUNER,TRANSMISSION LINE) is an item designed to be inserted in a transmission line and which can be controlled to electrically lengthen or shorten the line so as to minimize its standing wave ratio. See also TUNER, WAVEGUIDE and NETWORK, IMPEDANCE MATCHING.
What is an Antenna Lobe Switch? 24 Items
An Antenna Lobe Switch (LOBE SWITCH,ANTENNA) is an item specifically designed for systematically shifting the radiation pattern of an antenna. May include motor. Excludes SWITCH, WAVEGUIDE and SWITCH, RADIO FREQUENCY TRANSMISSION LINE.
What is a Waveguide Switch? 817 Items
A Waveguide Switch (SWITCH,WAVEGUIDE) is an item specifically designed for mechanically or electronically positioning one or more waveguide sections so as to couple it or them to other sections in a waveguide system. The switching function may be operated by a manual actuator, an electromechanical actuator or by means of an arrangement of semiconductors and passive circuit devices. Excludes RELAY, (as modified).
What is a Radio Frequency Transmission Line Switch? 3993 Items
A Radio Frequency Transmission Line Switch (SWITCH,RADIO FREQUENCY TRANSMISSION LINE) is an item specifically designed for mechanically or electronically positioning one or more radio frequency transmission line sections so as to couple it or them to other sections in a radio frequency transmission line system. The switching function may be operated by a manual actuator, an electromechanical actuator or by means of an arrangement of semiconductors and passive circuit devices. Excludes RELAY, (as modified).
What is an Antenna Case? 561 Items
An Antenna Case (CASE,ANTENNA) is a case specifically designed to hold an antenna, an antenna element(s), or antenna section(s).
CASE,ANTENNA ALIGNMENT KIT 27 Items
CASE,ANTENNA COUPLER 39 Items
CASE,ANTENNA PEDESTAL SUBASSEMBLY 24 Items
CASE,ANTENNA REFLECTOR 27 Items
CASE,ELECTRICAL DUMMY LOAD 16 Items
What is a Mast Case? 77 Items
A Mast Case (CASE,MAST) is a case specifically designed to hold a mast or a mast section(s).
What is an Antenna Assembly? 1547 Items
An Antenna Assembly is an item consisting of two or more separately excited antennas on a common mounting or mounted on each other. Do not use for a single antenna which is merely complex or unusual in construction.
What is an Antenna Pedestal? 663 Items
An Antenna Pedestal (PEDESTAL,ANTENNA) is an item specifically designed to support and rotate an antenna(s). It may also support related components such as transmitters, receivers, or modulators. It may include accessory items such as drive motors, synchros, contactors, or collector rings. See also TOWER.
What is an Antenna Pedestal Platform? 64 Items
An Antenna Pedestal Platform (PLATFORM,ANTENNA PEDESTAL) is an item consisting of a flat surface and its mounting supports, designed to be placed at some level other than the base of the antenna pedestal, for the purpose of supporting equipment and/or maintenance personnel.
What is an Antenna To Transmitter Adapter? 213 Items
An Antenna To Transmitter Adapter (ADAPTER,ANTENNA TO TRANSMITTER) is an adapter which provides facilities for electromechanically adapting the output circuit of a transmitter of one impedance to an antenna of a lower or higher impedance, while simultaneously providing dynamic electrical loading of the circuit for stabilization of the frequency generating component against undesirable external loading.
What is an Antenna Drive? 450 Items
An Antenna Drive (DRIVE,ANTENNA) is a device which may rotate or position an antenna in response to and external control signal. It is not designed to support an antenna.
What is a Fixed Attenuator? 6254 Items
A Fixed Attenuator (ATTENUATOR,FIXED) is a device for reducing the strength of an alternating current signal by a fixed or predetermined amount, without causing appreciable signal distortion, by maintaining correct impedance match.
What is an Antenna Coupler? 1885 Items
An Antenna Coupler (COUPLER,ANTENNA) is a coupler which provides a means of transfer of electrical energy between an antenna and other components. See also LINE, RADIO FREQUENCY TRANSMISSION; CABLE ASSEMBLY (as modified); and NETWORK, IMPEDANCE MATCHING.
ADAPTER,ANTENNA TO ANTENNA BASE 451 Items
What is a Mast Adapter? 159 Items
A Mast Adapter (ADAPTER,MAST) is an item constructed to establish the necessary accommodations to connect two or more masts whose physical design or function will not normally warrant their connection.
What is a Radome? 1470 Items
A Radome is an item which incloses an antenna. It is specifically designed to permit maximum passage of radio frequency energy through it, while providing protection to the antenna from weather. The item may also inclose the antenna support, and rotating mechanism. It may be flexible or rigid, streamlined or irregular shaped. May also include pressurizing mechanism and anti-icing or de-icing equipment. See also COVER, ANTENNA ELEMENT.
What is a Wire Antenna Weight? 13 Items
A Wire Antenna Weight (WEIGHT,WIRE ANTENNA) is an item designed to facilitate the unreeling of a wire antenna.
What is an Antenna Support Tie Rod? 70 Items
An Antenna Support Tie Rod (TIE ROD,ANTENNA SUPPORT) is an item long in relation to its cross section, that connects and maintains relative position between two antenna supports. It is not intended to overcome the force of gravity. The ends are usually processed to provide mounting facilities. May include mounting hardware.
What is an Antenna Cover? 665 Items
An Antenna Cover (COVER,ANTENNA) is excludes RADOME.
COVER,ANTENNA BASE 99 Items
COVER,ANTENNA ELEMENT 155 Items
COVER,ANTENNA SUPPORT 90 Items
What is a Radome Cover? 107 Items
A Radome Cover (COVER,RADOME) is a cover designed to protect a RADOME from mechanical damage while the inclosed antenna is not in use.
COVER,WAVEGUIDE FLANGE 174 Items
COVER,WAVEGUIDE HORN 37 Items
What is an Antenna Vane? 29 Items
An Antenna Vane (VANE,ANTENNA) is a mechanical item which is added to a rotating antenna to maintain constant wind loading of the antenna during rotation by presenting a greater surface to the wind as the surface presented by the antenna reflector decreases.
What is an Amplifier-Regulator Group? 14 Items
An Amplifier-Regulator Group is a collection of items which provides amplifying and regulating facilities.
What is an Antenna Coupler Group? 267 Items
An Antenna Coupler Group is a collection of items, that provides coupling facilities between an antenna and another compatible component(s).
What is an Antenna Deicing Set? 41 Items
An Antenna Deicing Set is a collection of items, for removal of ice that has formed on an antenna.
What is an Antenna Elevator Group? 65 Items
An Antenna Elevator Group is a collection of items, for raising and lowering an antenna.
What is an Antenna Support Group? 465 Items
An Antenna Support Group is a collection of items supporting an antenna. May include integral components.
What is a Control-Coupler Group? 31 Items
A Control-Coupler Group is a collection of items, which provides the dual function of control and coupling.
What is an Electrical Dummy Load Group? 70 Items
An Electrical Dummy Load Group (DUMMY LOAD GROUP,ELECTRICAL) is a collection of items, that provide electrical dummy load facilities.
What is an Antenna Stand? 163 Items
An Antenna Stand (STAND,ANTENNA) is excludes INSULATOR, STANDOFF.
What is an Antenna Elevator Control? 15 Items
An Antenna Elevator Control (CONTROL,ANTENNA ELEVATOR) is a control which determines the mode of operation of an antenna elevator.
What is an Antenna Coupler Control? 50 Items
An Antenna Coupler Control (CONTROL,ANTENNA COUPLER) is a control that determines the mode of operation of an antenna coupler.
What is an Antenna Elevator Drive? 24 Items
An Antenna Elevator Drive (DRIVE,ANTENNA ELEVATOR) is an electromechanical device for transferring external operating forces to an antenna elevator.
What is an Antenna Elevator? 84 Items
An Antenna Elevator (ELEVATOR,ANTENNA) is an item specifically designed to raise and lower an antenna. Does not include the antenna.
What is a Radio Frequency Reflection Isolator? 1688 Items
A Radio Frequency Reflection Isolator (ISOLATOR,RADIO FREQUENCY REFLECTION) is a device which allows radio frequency energy to pass in one direction with very little power loss, but blocks the flow of energy in the other direction by means of multiple WAVE-polarization or an integral dissipative load. It isolates frequency sensitive circuity from the effects of reflected radio frequency energy resulting from component mismatch. It usually has one or more ports terminated with coaxial connector(s) and/or waveguide flange(s); or other electrical terminations. Isolators designed for internal use in waveguide runs may consist of rods, rings, chips, strips and the like and have no ports or terminations. See also DIPLEXER; DUPLEXER. Excludes CIRCULATOR, RADIO FREQUENCY.
What is an Antenna Selector? 76 Items
An Antenna Selector (SELECTOR,ANTENNA) is an item which automatically discriminates between radio frequency signals impinging on two or more antennas, and will connect that antenna which provides optimum signal strength from a desired transmitting source of one or more radio receivers. See also SELECTOR, RECEIVER SIGNAL.
What is a Loading-Phasing Discriminator? 51 Items
A Loading-Phasing Discriminator (DISCRIMINATOR,LOADING-PHASING) is an item which electronically loads and resonates an antenna and transmission line system in accordance with changes in the operating frequency of associated equipment. Resonance and loading is effected by the application of control voltages to an antenna coupler. Control voltages are derived by the electrical discrimination of the angular phase shift resulting from standing wave ratios when the radiation system is in an off-resonance condition. Excludes DISCRIMINATOR, ELECTRICAL FREQUENCY and TRANSFORMER, DISCRIMINATOR.
What is a Coaxial Crystal Mixer? 215 Items
A Coaxial Crystal Mixer (MIXER,CRYSTAL,COAXIAL) is an item consisting of coaxial line and associated connectors having two frequency inputs, a crystal (any semiconductor device that provides rectification) and an output connection. It is employed to mix two frequencies, with the resultant output frequency being a composite of the two inputs. For items utilizing electron tube(s) and/or WAVEGUIDE ASSEMBLY, see MIXER STAGE, FREQUENCY; and MIXER, CRYSTAL, WAVEGUIDE.
What is a Waveguide Crystal Mixer? 128 Items
A Waveguide Crystal Mixer (MIXER,CRYSTAL,WAVEGUIDE) is an item consisting of a WAVEGUIDE ASSEMBLY having two frequency inputs, a crystal (any semiconductor device that provides rectification) and an output connection. It is employed to mix two frequencies, with the resultant output frequency being a composite of the two inputs. For items which also utilize electron tube(s), see MIXER STAGE, FREQUENCY. See also MIXER, CRYSTAL, COAXIAL.
What is an Antenna Cover Mounting Frame? 51 Items
An Antenna Cover Mounting Frame (FRAME,MOUNTING,ANTENNA COVER) is a framelike item of varied shapes provided with holes or other means for holding a COVER, ANTENNA in place. Excludes PLATE, MOUNTING, ANTENNA COVER.
CASE,RADIO FREQUENCY TRANSMISSION LINE 30 Items
What is a Diplexer? 688 Items
A Diplexer is an item designed to allow a single antenna to be used for simultaneous transmission and reception on different frequencies. It is installed in a transmission line or waveguide system between the transmitter(s) and/or receivers and a common antenna. It may have provisions for tuning.
What is a Radio Frequency Circulator? 721 Items
A Radio Frequency Circulator (CIRCULATOR,RADIO FREQUENCY) is a waveguide, stripline, or coaxial component having three or more ports (terminals), so arranged that energy entering one port is transmitted to the next adjacent port in a particular direction while decoupling the energy from all other ports. Excludes SWITCH, RADIO FREQUENCY TRANSMISSION LINE; and SWITCH, WAVEGUIDE.
What is a Truck-Mounted Communication Antenna-Mast Group? 20 Items
A Truck-Mounted Communication Antenna-Mast Group (ANTENNA-MAST GROUP,COMMUNICATION,TRUCK-MOUNTED) is an item consisting of two or more masts, each having an array of two or more antennas and one or more amplifier(s) to receive and transmit voice or digital data when used in conjunction with appropriate electronic equipment. The masts telescope and fold for transport.
What is a Direct Current Blocking Coupler? 55 Items
A Direct Current Blocking Coupler (COUPLER,DIRECT CURRENT BLOCKING) is a coupler which is specifically designed to be inserted into a coaxial transmission line to permit flow of radio frequency electrical energy while preventing the flow of signals below 20 kilohertz (kilocycles). It consists of a short section of coaxial line which has a capacitance in series with the center and/or outer conductor. See also COUPLER (1), DIRECT CURRENT SHORTING; COUPLER, DIRECTIONAL and COUPLER (1), TRANSMISSION LINE.
What is a Direct Current Shorting Coupler? 25 Items
A Direct Current Shorting Coupler (COUPLER,DIRECT CURRENT SHORTING) is a coupler which is specifically designed to be inserted into a coaxial transmission line to permit the flow of radio frequency electrical energy while providing a circuit between the center and outer conductors for signals below 20 kilohertz (kilocycles). It consists of a short section of coaxial line which has a high impedance line shunted across the inner and outer conductors. See COUPLER (1), DIRECT CURRENT BLOCKING; COUPLER, DIRECTIONAL; and COUPLER (1), TRANSMISSION LINE.
What is an Attenuator Set? 81 Items
An Attenuator Set is a grouping of two or more individual ATTENUATOR, FIXED and/or ATTENUATOR, VARIABLE which may or may not include a case or other facility for storage and rapid access to individual attenuators. For items which are mounted on a common mounting or mounted on each other, see ATTENUATOR ASSEMBLY.
What is an Antenna Unit Switch? 194 Items
An Antenna Unit Switch (SWITCH,ANTENNA UNIT) is this item provides switching of radio frequency signals from antennas to receiver-synthesizer. The antenna switching unit also receives switching commands from the receiver-synthesizer that determine which high band, mid band and lowband signals are to be switched.
What is a Radio Frequency Amplifier-Coupler? 81 Items
A Radio Frequency Amplifier-Coupler (AMPLIFIER-COUPLER,RADIO FREQUENCY) is an item having the dual function of an amplifier and a coupler to provide automatic tuning to a variety of antennas by matching impedance levels.
What is an Antenna Stiffener Rib? 42 Items
An Antenna Stiffener Rib (RIB,STIFFENER,ANTENNA) is an item used to brace the interior or exterior of an antenna.
What is an Antenna Accessory Kit? 487 Items
An Antenna Accessory Kit (ACCESSORY KIT,ANTENNA) is an accessory kit designed to connect an ANTENNA to a trailer or other equipment, consisting of guy wires, stakes, miscellaneous hardware, and the like. Excludes ANTENNA COUPLER GROUP.
What is an Antenna Mast Lock Assembly? 55 Items
An Antenna Mast Lock Assembly (LOCK ASSEMBLY,ANTENNA MAST) is a device designed to secure a MAST, excludes LEVER, MANUAL CONTROL.
What is a Waveguide Shim? 162 Items
A Waveguide Shim (SHIM,WAVEGUIDE) is a piece of metallic material designed to fit between two FLANGE, WAVEGUIDEs for the purpose of ensuring a low electrical resistance between the faces of the flange.
What is a Filter Waveguide Assembly? 161 Items
A Filter Waveguide Assembly (WAVEGUIDE ASSEMBLY,FILTER) is a WAVEGUIDE ASSEMBLY which is specifically designed to pass frequencies within a range and to suppress frequencies outside that range. It may contain one or more tuned cavities, and tuning devices such as capacitive screws and the like.
What is a Radome Repair Kit? 28 Items
A Radome Repair Kit (REPAIR KIT,RADOME) is an assortment of tools, patch materials, and application accessories required for the reconditioning of a RADOME.
What is a Radome Panel? 399 Items
A Radome Panel (PANEL,RADOME) is a preformed item composed of materials that facilitate the passage of radio frequency energy, which forms a portion of a RADOME. It may contain facilities for mounting and have attachment points for pressurizing and de-icing equipment.
What is a Trailer Mounted Communications Antenna? 38 Items
A Trailer Mounted Communications Antenna (ANTENNA,COMMUNICATIONS,TRAILER MOUNTED) is a unit used to receive and transmit voice or digital data when used in conjunction with the appropriate electronic equipment. The antenna(s) can be folded for transportation and may include various pieces of support equipment for operation.
What is an Antenna Inclinometer? 36 Items
An Antenna Inclinometer (INCLINOMETER,ANTENNA) is a inclinometer, usually activitated by gravity and usually graduated in degrees, which is used on an antenna.
What is a Waveguide Drier? 59 Items
A Waveguide Drier (DRIER,WAVEGUIDE) is an electrically driven, automatic functioning device for continuous operation designed to dry and pressurize the waveguide run between the radar set and antenna-system.It protects the radar set from malfunction.
What is an Electrical And Electronic Equipment Modification Kit? 261 Items
An Electrical And Electronic Equipment Modification Kit (MODIFICATION KIT,ELECTRICAL AND ELECTRONIC EQUIPMENT) is an item or collection of items employed to modify electrical and electronic equipment.
What is a Mast Base Spike? 44 Items
A Mast Base Spike (SPIKE,MAST BASE) is a metallic item having one end pointed or tapered to facilitate entrance into the ground with other ends formed into a hook to retain ground position of a BASE, MAST.
What is an Antenna Drive Theodolite Mounting Adapter? 11 Items
An Antenna Drive Theodolite Mounting Adapter (ADAPTER,THEODOLITE MOUNTING,ANTENNA DRIVE) is an adapter of various designs with provisions to facilitate connection of a theodolite to an antenna drive unit.
What is a Radio Frequency Power Divider? 1151 Items
A Radio Frequency Power Divider (DIVIDER,POWER,RADIO FREQUENCY) is an item specifically designed to separate incoming radio frequency power into predetermined proportional values at its output terminals.
What is a Duplexer-Mixer? 15 Items
A Duplexer-Mixer is a single component with the combined dual function of duplexing and mixing electronic signals. May include integral isolator and interconnecting waveguide.
What is an Antenna Handle? 32 Items
An Antenna Handle (HANDLE,ANTENNA) is an item which is the gripping portion of a hand-held ANTENNA. It is shaped to be grasped during use and contains provisions for mounting or inclosing a portion of the coaxial cable and connections.
What is an Antenna Position Indicator? 54 Items
An Antenna Position Indicator (INDICATOR,ANTENNA POSITION) is an indicator that displays the physical position of an antenna in relation to one or more predetermined axis. See also METER, ANTENNA TILT.
What is an Antenna-Radome Rotation Monitor? 22 Items
An Antenna-Radome Rotation Monitor (MONITOR,ANTENNA-RADOME ROTATION) is an item which presents operational information derived from an antenna and its associated radome, to determine the departure of one from the other with respect to azimuth alignment.
What is an Antenna Position Programmer? 32 Items
An Antenna Position Programmer (PROGRAMMER,ANTENNA POSITION) is an item which provides coordinate information, dependent upon input data, to be used for slewing the antenna or directing the beam so that its radiation and/or acquisition pattern is within a predetermined free space volume. See also CONTROL, ANTENNA and DRIVE, ANTENNA.
What is an Antenna Protector? 119 Items
An Antenna Protector (PROTECTOR,ANTENNA) is a reusable, fabricated, rigid item designed to protect an atenna during handling, operation, maintenance, and shipping operations.
What is a Signal Data Translator? 70 Items
A Signal Data Translator (TRANSLATOR,SIGNAL DATA) is an item that processes a restricted bandwidth data modulated signal received on a wide band carrier frequency, to a standardized single radio frequency, and conversely processes a locally generated data modulated signal within a restricted bandwidth to a standardized single radio frequency, for transmission within the restricted bandwidth on any incremental frequency on the wide band carrier frequency. See also CONVERTER, SIGNAL DATA.
What is an Antenna Tripod? 305 Items
An Antenna Tripod (TRIPOD,ANTENNA) is a specifically designed open framework structure consisting of three legs hinged or rigidly affixed at the top to a central mounting head, plate, or the like, which provides the principal support for an antenna. Each leg is designed to be attached at the base to a permanent footing or may include integral footing or base plate.
What is an Antenna Polarizer? 20 Items
An Antenna Polarizer (POLARIZER,ANTENNA) is an item generally mounted in or outside a waveguide and designed to modify the electromagnetic wave characteristics of the wave emitted by radar or other equipment.
What is a Common Ground Station Antenna Group? 18 Items
A Common Ground Station Antenna Group (ANTENNA GROUP,COMMON GROUND STATION) is a mobile station specifically designed and configured to carry antennas, mast, tripod antenna assembly, or miscellaneous antenna support equipment for its host system and prime mover. The unit may have transit cases, straps and brackets to hold, fasten or tie-down the antennas and accessories.
What is an Antenna Control Unit? 111 Items
An Antenna Control Unit is a hydraulic manifold which contains all fluid control valves for controlling hydraulic fluid to the hydraulic motor in the antenna drive unit on the mast, determining direction of antenna mast rotation and rotation speed. It also generates control signals for activating solenoids to raise or lower the antenna. For items consiting of less than complete hydraulic control system see ANTENNA CONTROL GROUP. EXCLUDES: ANTENNA GROUP; ANTENNA CONTROL SUBASSEMBLY; and ANTENNA CONTROL GROUP.
What is an External Sensors Mast Assembly? 31 Items
An External Sensors Mast Assembly (MAST ASSEMBLY,EXTERNAL SENSORS) is an item having a single mounting base, used to support items, such as, external sensors, aspirators, hygrothermometers, associated hardware, and the like.
What is an Antenna Heater? 30 Items
An Antenna Heater (HEATER,ANTENNA) is an electrical device consisting of a resistance element or a conducting polymer and may include insulating material, sheathing, supports, electric terminals and automatic controls to regulate the amount of heat generated or to detect ice build up or low temperatures. These heaters are designed to protect antennas, antenna pedestals or radomes from the effects of ice or low temperatures. Includes antenna heaters used in space, on land, aircraft and watercraft. Excludes items used as residential, industrial, or commercial space heaters, fluid heaters or solid material heaters.
What is a Mast Accessory Kit? 55 Items
A Mast Accessory Kit (ACCESSORY KIT,MAST) is a collection of items for setting up a mast, such as guy reels, winch, guy stakes, list of contents and bag.
What is an Antenna Bag? 85 Items
An Antenna Bag (BAG,ANTENNA) is a container made of flexible material, designed to carry a ANTENNA. It may have facilities such as handle(s), and/or starp(s) for carrying and may also have interior and exterior pockets as well as dividers for seperating and securing equipment and accessory. EXCLUDES: CASE,ANTENNA and COVER,ANTENNA.
What is a Triplexer? 28 Items
A Triplexer is a multiplexer consisting of one input and three outputs. The single input is common to all three individual filters with separate outputs. This device is used to separate three separate frequencies via a transmission line attached to the "common" port of the transmitter and then separated through the outputs covering those frequencies.
What is an Instrument-Equipment Remote Control? 11 Items
An Instrument-Equipment Remote Control (REMOTE CONTROL,INSTRUMENT-EQUIPMENT) is a wired or wireless transmission device that provides remote control for equipment or instrument by pressing buttons mounted on the device. Excludes REMOTE CONTROL,HANDHELD,UNIVERSAL; REMOTE CONTROL,HANDSET,TELEVISION; REMOTE CONTROL HANDSET,VIDEO and REMOTE CONTROL RADIO DEVICE,HANDHELD.
What is a Linear Microcircuit? 27216 Items
A Linear Microcircuit (MICROCIRCUIT,LINEAR) is a microcircuit whose output is a function of the input; that is, the output varies in a predetermined and essentially predictable manner from the input signal.
What is a Digital Microcircuit? 91110 Items
A Digital Microcircuit (MICROCIRCUIT,DIGITAL) is a microcircuit specifically designed to generate, modify, or process electrical signals which operate with two distinct or binary states. These states are commonly referred to as on and off, true and false, high and low, or "1" and "0".
What is a Microcircuit Assembly? 1572 Items
A Microcircuit Assembly is a grouping of two or more individual microcircuits mounted on a common mounting or on each other. Each microcircuit must be separable and capable of functioning in accordance with its given name. The item is generally part of an electrical/electronic subassembly and cannot be assigned a more specific item name. It excludes items containing electrical/electronic components other than microcircuits, except that when mounted on a printed wiring board it may include a connector(s). For items containing other components in additition to MICROCIRCUITS see CIRCUIT CARD ASSEMBLY and ELECTRONIC COMPONENTS ASSEMBLY. F0r items having a complete individual electrical/electronic function, use the applicable item name such as AMPLIFIER (as modified), OSCILLATOR (as modified) or POWER SUPPLY.
What is a Microcircuit Set? 796 Items
A Microcircuit Set is a grouping of two or more separate MICROCIRCUITS, (as modified) which may or may not be matched together for characteristic(s). For items having a common mounting or mounted on each other, see MICROCIRCUIT ASSEMBLY. Excludes SEMICONDUCTOR DEVICE SET.
What is a Digital-Linear Microcircuit? 2121 Items
A Digital-Linear Microcircuit (MICROCIRCUIT,DIGITAL-LINEAR) is a microcircuit having the dual functions of a MICROCIRCUIT (1), DIGITAL and a MICROCIRCUIT (1), LINEAR.
What is a Hybrid Microcircuit? 2179 Items
A Hybrid Microcircuit (MICROCIRCUIT,HYBRID) is a circuit in which one type of microcircuit is combined with some other type of microcircuit or with discrete components. For two microcircuits on a common mounting or on each other, see MICROCIRCUIT ASSEMBLY. For microcircuits having a complete independent memory function, see MICROCIRCUIT (1), MEMORY.
What is a Memory Microcircuit? 33206 Items
A Memory Microcircuit (MICROCIRCUIT,MEMORY) is a circuit designed to store information and/or coded instructions. Item has pins or other connections to install in a computer or computing device. Does not include