ryanleung Posted May 1, 2006 Author Report Share Posted May 1, 2006 Maybe the phototransistor is being saturated by visible light. Is the range better when it is dark?YesAnd I have a some question to ask you. My oscillator can not adjust the frequency to 38kHz. I use 220nF capacitor and 180uH inductor and I can not decrease the frequency anymore. Quote Link to comment Share on other sites More sharing options...
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