It really depends.
If you have a circuit whose job is to, say, give 12V to a motor when a password is successfully entered, you can “bypass” it by just directly connecting the 12V battery to the motor with a wire.
If you have a circuit, whose job is to amplify the signal from a turntable to a speaker, no, you can’t just connect a wire from the 12V battery to a speaker. That’s not gonna give you music.
Latest Answers