I try to make a circuit that when the audio signal is present automatically opening the amplifier and when the audio signal is discontinued closes the amplifier after a certain period of time. I made a circuit as follows, works on breadboard.
I don't want to join the circuit power ground and signal ground.
How can I do better.
its google translated.
I don't want to join the circuit power ground and signal ground.
How can I do better.
its google translated.
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