Schematics Depot >> Audio >> sound detector tone decoder
all resistors are 5 or 10 percent tolerance, 1/4-watt
all capacitors are 10 percent tolerance,
rated 35 volts or higher
this is also designed to be in conjunction with the sound detector amp/electret mike amp. this circuit is designed to trigger on a 1 khz tone. to change this frequency - refer to the table below, then change the resistor and capacitor values accordingly..
capacitance in uF
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