Ir Remote Circuit Diagram. 27 out of 100 based on 402 user ratings the infrared remote control circuit diagram can be download for free. The usual operating current of 3 and 5 mm leds is around 20 ma.
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We are using tsop1738 as ir receiver so we need to generate the modulated ir of 38 khz. Ir transmitter circuit diagram. Lm7805 voltage regulator is also added in to the circuit for providing 5 volt voltage supply to the circuit and a 9 volt battery is used for powering the circuit.
In the receiver section there are 3 photodiodes which will detect the infrared signals from the receiver and produce leakage current to the capacitor c1.
I used some 470 ω resistors to limit the current going through the leds. So we are using 555 timer in astable mode to oscillate the ir at 38khz frequency. Circuit diagram of infrared remote control switch. Circuit diagram and explanation.
