Magnetic Amplifier

A magnetic amplifier, also known as a magamp, is a type of amplifier that uses magnetic cores to control the flow of current. It falls under the supply class of amplifiers in the supply group of electrical and electronic equipment components.

The basic principle of a magnetic amplifier involves using the magnetic properties of the core material to control the output current. The core is made of a ferromagnetic material, such as iron or ferrite, which can be magnetized and demagnetized.

The magnetic amplifier consists of two windings: the control winding and the output winding. The control winding is connected to a control signal source, such as a voltage or current source. The output winding is connected to the load.

When a control signal is applied to the control winding, it creates a magnetic field in the core. This magnetic field affects the impedance of the output winding, thereby controlling the output current. By varying the control signal, the output current can be modulated or amplified.

Magnetic amplifiers have several advantages, including high power handling capability, high efficiency, and good linearity. They are commonly used in applications where precise control of current or voltage is required, such as power supplies, motor drives, and voltage regulators.

In summary, a magnetic amplifier is a type of amplifier that uses magnetic cores to control the flow of current. It falls under the supply class of amplifiers in the supply group of electrical and electronic equipment components.