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IR remote control tester

A very simple IR remote control tester schematic circuit that can be used for testing a IR remote control or IR device like IR barrier can bedesigned like in this circuit diagram , using few common electronic parts. The circuit use a TAA861 operational amplifier  circuit used as an comparator  and a photodiode BPW41, SFH205 or similar and other few external common components .

The tester circuit is very simple and is needed a power supply with a output voltage between 6 an 12 volts DC . You can use another similar operational amplifier or photodiode  . The D2 diode is a common red led which indicates that the tested device is working ( the LED will light ) .

IR remote control tester circuit diagram

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