CORES_ACTUATE_RELAY

Published:2009/7/13 3:18:00 Author:May | From:SeekIC

When d-c supply voltage equals reference voltage, no direct current flows through the control windings of saturable reactors, reactance of 400-cps winding is high, and voltage across rectifier bridge is high enough to pull in relay. When supply voltage increases or decreases, difference voltage causes core saturation that reduces reactance, allowing relay to drop out. Neon indicator lamp may be used in place of rectilfier bridge.-M. C. Herzig and D. C. Colbert, Voltage Monitor Needs Only Two Saturable Cores, Electronics, 36:23, p50-51.



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