Infrared remote control switch circuit

Published:2011/6/29 5:59:00 Author:Fiona | Keyword: Infrared remote control switch | From:SeekIC

The remote control transmitter which is used is ordinary home appliance remote control.Receiveing control circuit is welded according to the figure,it can be successful without debugging.IR is infrared remote control receiving head,when the infrared signal is not received,① pin outputs the high level;when the infrared signal is received,① pin outputs a series of low level pulse.R4,C2 and R7,C3 compose two integrating circuit, Q4, Q5.J compose the relay control circuit.C5, D5 ~ D8 compose exchange step-down rectifier circuit.Usually original state after standby or power up is:Q1 conducts,Q2 is closed,Q5 is closed,the relay J does not work.



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