A transient analyzer for magnetic amplifiers

THE RESPONSE time of a magnetic amplifier is defined as the time required for the rms or rectified average value of output current or voltage to change a prescribed percentage of the difference between the corresponding initial and final steady-state values. When the magnetic characteristics of the core materials approach the rectangular B-H loop shape, the waveform of the output current exhibits the typical rapid rise as one core saturates at some angle αMA and sinusoidal form after saturation, until the end of the half cycle. Under these conditions, the peak value of load current is independent of the average or rms value when αMA≤π/2.