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PHOTOTRANSISTOR_IR_RECEIVER

2016-05-07 18:59  
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PHOTOTRANSISTOR_IR_RECEIVER
This receiver uses an op amp and a phototransistor as a recetver for IR signals. Q1 is a phototransistor. The op amp is CMOS or FET, such as a TL081, etc. R1 and R2 depend on phototransistor, but are typically 2.2 kΩ and 330Ω, respectively. R3=R4=10 kΩ, R5=100 kΩ, and C1 is 0.1 μF (or larger ).