PRECISION_LIGHT_ACTIVATED_ALARM

Published:2009/6/14 22:55:00 Author:May | From:SeekIC

The light-sensitive CDS cell R8 conftgured In a bridge circuit with IC1 as a comparator causes IC1's output to go high when light strikes the CDS cell R8，triggering SCR1 This lights LED1 andturns on opto isolator IC2，which switches the load



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