Sound Activated LED Flasher Circuit

This is a sound activated LED flasher circuit. The circuit will start flashing two LEDs when it receive any sound from the condenser mic.The transistors in this circuit are working as switch. when the microphone receive a sound signal the signal goes to the base of first transistor


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which is connected to the microphone and turn on the circuit.The circuit uses only 3 volt supply so you can use any small 3 volt battery.

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