50_60_and_400_CPS_SERVO_AMPLIFIER

Published:2009/7/23 23:51:00 Author:Jessie | From:SeekIC

Solid-state 10-W amplifier handles all three power frequencies, operates from 28 V d-c, and uses four-transistor Darlington output stages to drive two-phase servo motor. Preamplifier and drive stages Q1-Q4 are all d-c coupled through zener diodes, with d-c feedback around all four stages to stabilize bias against temperature changes.-M. Bodnar, Versatile Servo Amplifier for 50, 60 or 400-Cycle Operation, Electronics, 36:3, p 44-45.



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