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Switch - Sound Activated

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The audio from Mic is amplified by Q1. Peaks of signal (adjust by R1) greater than about 0.7 volts trigger the SCR and light lamp I1.


Parts List:
Component: Value: Datasheet: Qty:
Resistor

1K

Not Available 01
Resistor 4.7K Not Available 01
Resistor 5K Pot Not Available 01
Capacitor 0.47 Not Available 01
Capacitor 1uF Not Available 01
Transistor HEP802 Not Available 01
SCR C103 Not Available 01