George L. said:
hello,
I am trying to make a simple infrared emitter and reciver.
I am using an infrared LED, and an infared receiver (phototransistor) from radioshack.
The goal is for the receiver to turn on a transistor when the circuit senses infrared light from the LED. (Similar to a TV remote control).
The Problem is that the reciver only picks up the "light from the LED" at VERY close distances (10 inches).
I attached a circuit that I thought would make the receiver more sensitive, but instead it seems that the circuit is always ON, even when the phototransistor is in darkness.