C cannibal New Member Sep 26, 2007 #1 hello how to modify this circuit so insted of LED I connect new external circuit which uses it's won power source I mean insted of activated LED the external circuit will be active click here to see the circuit ???
hello how to modify this circuit so insted of LED I connect new external circuit which uses it's won power source I mean insted of activated LED the external circuit will be active click here to see the circuit ???
audioguru Well-Known Member Most Helpful Member Sep 26, 2007 #2 Replace the LED with the LED in a photo-isolator. Then the transistor in the photo-isolator can turn on whatever you want.
Replace the LED with the LED in a photo-isolator. Then the transistor in the photo-isolator can turn on whatever you want.