Midnight Security Light Circuit


Posted on Feb 4, 2014

Most thefts happen after midnight hours when people enter the second phase of sleep called ˜paradoxical sleep. Here is an energy-saving circuit that causes the thieves to abort the theft attempt by lighting up the possible sites of intrusion (such as kitchen or backyard of your house) at around 1:00 am. It automatically resets in the morning. The circuit is fully automatic and uses a CMOS IC CD 4060 to get the desired time delay. Light-dependent resistor LDR1 controls reset pin 12 of IC1 for its automatic action. During day time, the low resistance of LDR1 makes pin 12 of IC1 ˜high, so it doesn t oscillate..


Midnight Security Light Circuit
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