PUSH-PULL CURRENT AMPLIFIER Russian patent published in 1998 - IPC

FIELD: radio electronics. SUBSTANCE: amplifier is used as high-power output stage in low-frequency amplifiers, DC amplifiers, video amplifiers, various converters, measuring equipment, output and preamplifier stages of radio transmitters in frequency range of up to 10 MHz. Operational amplifiers function as switching components to directly control one of high-power output transistors and to control its current each time in combination with use of auxiliary bipolar DC voltage source electrically isolated from ground bus so as to provide independent supply to them. EFFECT: improved thermal stability and highly linear synthesis of output bus current proportional to input current being amplified. 2 dwg