PARALLEL_OPAMP_PREAMP

Published:2009/7/20 22:58:00 Author:Jessie | From:SeekIC

Provides differential output required for driving power amplifier of 115-V 60-Hz servomotor. One opamp section is connected inverting and the other noninverting to give required complementary outputs, Voltage gain is 40 dB, operating from single 20-V zener-regulated supply. High DC feedback gives excellent DC stability. Band-width is about 6 kHz. Input is driven by 90° phase shifter.-A. Pshaenich, Servo Motor Drive Amplifiers, Motorola, Phoenix, AZ, 1972, AN-590.



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