Pulse duty control system

摘要

A pulse duty control system includes a pulse duty controlling element which is formed by a core of an amorphous magnetically soft material and which carries a first and a second coil thereon. A first set of pulses are applied to one end of the first coil while a constant voltage or a second set of pulses are applied to one end of the second coil. The other end of the first coil is connected to an output terminal while the other end of the second coil is connected to a current controlling transistor. An output pulse which is developed at the other end of the first coil has a rising edge which lags behind the rising edge of the first set of pulses by a time delay which corresponds to the degree of conduction of the transistor, and has a falling edge which is substantially synchronized with that of the first set of pulses.