Top Class Sound Activated Switch Circuit Diagram

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This is a Top Class Sound Activated Switch Circuit Diagram. Tops of signal (adjusted by Rl) greater than about 0.7 volts trigger the SCR and light lamp II.The audio from Mic is amplified by Ql.

Top Class Sound Activated Switch Circuit Diagram

http://circuitsstream.blogspot.com/2014/02/top-class-sound-activated-switch.html

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