Servo Circuit

Published:2011/9/3 10:31:00 Author:Zoey | Keyword: Servo Circuit | From:SeekIC

Following picture shows the servo circuit, this switched circuit uses μA795 Analog multiplier and μA741 operational amplifier to produce AC error signals, and then drives the two-phase servo electronic machine, the direct input signal will be added to pin9,and AC signal will be added to pin 4 via R1 and C1, servo position signal will be added to pin 12. The multiplier takes the signal margin of pin 9 and pin 12 and multiply it by signals on pin 4, then input the value to operational amplifier from pin 14. As soon as actions of the servo electronic machine equalize voltage on pin 9 and pin 12, the system will turn to be 0.



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