Sensitive Infrared Detector For Testing Remote Controls
electronicsNmore
Super Sensitive infrared detector circuit. Ideal for testing remote controls. Can be operated on 120V by modifying the schematic resistors R1/R4 to 56ohm, R2/R3 to 27.4K, and C1 to 1uf/250V. This circuit can be placed inside a very small project box and operated using a 9V battery by eliminating C1/D1/D2/C2 from the schematic and connecting the battery POS to the top side of R1, and the NEG to the lower rail.
Schematic here: http://www.wiringcircuit.com/misc/Remote_Control_Tester_1205.html
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