A solid-state pulse-width modulator

In conjunction with a program to investigate circuit techniques applicable to digital data reduction systems, various transistor-magnetic circuit combinations have been investigated. In such circuits the transistor is used as a switch
^{1, 2}
and the square loop magnetic material
³
is switched between opposite saturated states. These transistor-magnetic (Tramag
^∗
) techniques have been used to produce circuits to obtain a pulse-width or frequency output directly proportional to the applied input voltage.