Flux preset high-speed magnetic amplifiers

IT HAS BEEN established previously that the “firing angle” in a magnetic amplifier is governed primarily by the flux state of the core at the beginning of the gating half-cycle and that the change in the core state during the control half-cycle is fixed by the net time integral of voltage applied to the core during that half-cycle. The half-cycle response amplifier using “square-loop” material was developed in 1951 by applying this theory.¹