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Electronics >> Schematics Depot >> Audio >> sound detector amp/electret mike amp
 click here to enlarge schematic parts:
all resistors are 5 or 10 percent tolerance, 1/4-watt all capacitors are 10 percent tolerance, rated 35 volts or higher this circuit amplifies the output of a regular electret condensor microphone quite nicely.. adjust sensitivity by turning R1Return to: Schematics Depot, or Audio Circuits |
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