slackjack Posted November 6, 2005 Report Share Posted November 6, 2005 I'm trying to buld thisLeft = transmitterRight = receiverThis circuit has a transmitter and a receiver. So from what I understand, the interruption in a modulated pulsating beam that is transmitted by an infrared diode and received by an infrared transistor sets off the alarm. So what I am looking at is two different circuits. Can't these two be integrated into one circuit?So I absolutely must have the circuit with the Photodiode right? If they cant be integrated, how must the receiver be placed with respect to the transmitter?What are some uses of a Phototransistor?--thank you 8) Quote Link to comment Share on other sites More sharing options...
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