blueangelsg
New Member
Hi
can anyone tell me what a phototransistor does ? I have seen the circuit diagram and it looks like a circuit built using LEDs and transistors. What does it do then ?? What part does the LED play ??
thanx
can anyone tell me what a phototransistor does ? I have seen the circuit diagram and it looks like a circuit built using LEDs and transistors. What does it do then ?? What part does the LED play ??
thanx