Core-reset functions in magnetic-amplifier analysis part I ¿ A core-reset function

The operation of a magnetic amplifier is described by the differential equations of its physical system. In any analysis of amplifier operation the circuit equations resulting from the application of Kirchhoff´s laws possess terms containing the voltages which are induced electromagnetically in the core windings by changing core flux in accordance with Faraday´s law, and terms containing the various currents which flow in the windings. In general, a knowledge of the core properties relating instantaneous values of the rate of change of core flux ¿¿ and of net mmf (magnetomotive force) F of the currents in the windings is an essential part of a complete description of the physical system.