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Self-Latching Light-Activated Switch Circuit

2014-12-17 09:26  
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When light strikes the CDS cell it turns on the transistors which activates the relay which latches. Depressing SI grounds the base of the 2N3565 and the relay resets.
Self-Latching Light-Activated Switch Circuit

The 250 k potentiometer adjusts the sensitivity of the circuit.

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