Audio Controlled Mains Switch Circuit

Posted on Mar 22, 2013

This circuit will switch off the line supply to audio or video equipment if there has been no input signal for about 2 seconds. SI provides manual operation and S2 acts as a reset. This circuit allows for time to change a tape or compact disc.

Audio Controlled Mains Switch Circuit
Click here to download the full size of the above Circuit.

About 50 mV of audio signal is necessary.

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