Inverter with comparator amplifier - has switches controlled by transistors in series with transformer winding

摘要

A reference element and the output voltage are connected to the amplifier. There are gates which control parallel switching stages. The switching stages (13-17) are inserted between a d.c. voltage source (18) and tappings (3-7) of a transformer winding (2). The collector-emitter paths of control transistors (36, 37) for positive and negative half-waves are connected in series with the transformer winding (2). Their bases are connected to the comparator amplifier (40) output. When voltage across a transistor (36, 37) becomes a minimum, a next switching stage (13-17) is switched on or off.