Infrared automatic faucet controller (555, LM567, SP110)

Published:2011/8/25 21:08:00 Author:TaoXi | Keyword: Infrared, automatic, faucet, controller | From:SeekIC

The infrared automatic faucet controller is as shown in the figure. This control circuit has the transmitter circuit and the receiver decoding control circuit. The transmitter circuit is composed of the multivibrator and the infrared emitting diode, the receiving circuit is composed of the infrared receiving tubes D1 and D2, the operational amplifier IC2(CA741), the audio decoder IC3 (LM567), the AC solid-state relay IC4(SP110), the power supply circuit. In the transmitter circuit, the multivibrator is composed of the IC1 (555) and R1, R2, C1, the oscillation frequency f=1.44/(R1+2R2)C1, in this figure, the corresponding frequency is about 40kHz.



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