The multi-function time delay switch power supply outlet

Published:2011/7/3 20:16:00 Author:Borg | Keyword: multi-function, time delay switch, power supply | From:SeekIC

Turning on or off of domestic electric apparatus and lighting lamp is often done after some delayed time, this power supply outlet can meet these needs.Working principle: see as the figure, the circuit consists of the step-down, rectifier, filter and time delay control circuit and other parts. By pressing AN, the 12V voltage is imposed on the delayer, at the moment, the 2-pin and 6-pin of NE555 are in a high LEV, and 3-pin of NE555 is outputting a low LEV, so relay K gets power, the contactor K1-1 is pulling in upward, and the delay shut outlet is getting power.



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