ON_OFF_RELAY_SERVO

Published:2009/7/24 Author:Jessie | From:SeekIC

Step-function potentiometer provides on-off characteristic of null detector. Easily adjusted damping is applied through differential relay contacts to eliminate oscillations. Fast response to small angular displacements assures dose following. Tapping positive voltage off stop-function potentiometer causes current low through Q1, operation of relay K1A, and upward movement of arms. Negative voltage moves arms downward, reversing motor travel.-S. Shenfeld, Transistors Reduce Relay Servo Size, Electronics, 31:33, p 74-77.



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