The source signal has a ground. If it is not connected then the circuit picks up mains hum.Are you supposed to connect signal ground and power ground from the 9V battery together?
WELL NO WONDER WHY IT WASN'T WORKING!!!!!!!!!!!! after i connected all the grounds to the negative terminal of the 9V battery, it worked great!!! Thank you for all the helpThe source signal has a ground. If it is not connected then the circuit picks up mains hum.
The output signal has a ground.
All the grounds connect together.
The negative terminal of the 9V battery also connects to all the grounds.
by Aaron Carman
by Jake Hertz
by Jake Hertz