Magnetic Amplifiers And Saturable Reactors

The Magnetic amplifiers are primarily adjustable inductors, these could be operating in linear region or saturating to behave like the thyristor back to back system that are self or line commutated, these are being purely magnetic systems are ultra-reliable but expensive as compared to semiconductor devices. These amplifiers are essentially current controlled, hundreds of amperes in secondary is controlled using less than an ampere of current in primary control winding.