Homemade simple remote control switch circuit

Published:2011/7/26 1:25:00 Author:Christina | Keyword: Homemade, simple, remote control, switch circuit | From:SeekIC

The IC1 is the color TV remote control receiver, pin-1 is the ground port, pin-2 is the +5V power supply port, pin-3 is the signal output port, it has the +3.6V voltage when it does not receive the signal, and it has the 0V voltage when it receives the signal, IC2 is the CD4017 decimal counter / decoder IC. The 220V AC power supply is reduced, rectified and filted by the circuit to change into the 12V DC voltage that can be used as the operating voltage of the relay, the +12V current is limited by R2 and stabilized by VD to be the +5V current. When the circuit is in the static state, the T1 conducts, Q0=1, the indicator light LED turns on.



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