KEY PUSH-PULL AMPLIFIER STAGE Russian patent published in 1997 - IPC

FIELD: conversion equipment. SUBSTANCE: key push-pull amplifier stage includes first and second amplifier semiconductor controlled keys 1 and 2, first and second shunting four- terminal networks 3 and 4 connected in parallel to their inputs, blocking capacitor 5, load 6, voltage sources 7 and 8. Amplifier semiconductor controlled keys 1 and 2 switch on in turn during each half-period in series with load but are not connected in series with one another with reference to voltage sources. For provision of conditions of passage of current there are used shunting fourterminal networks. EFFECT: diminished straight- through currents, accelerated switching-over process and reduced dynamic losses. 2 dwg