Sound Detector Latch

357

03:58:18

Sound Detector Latch

for use with the sound detector circuit/electret mike amplifier. when the 555 ic goes into timing mode (triggered by an output signal from the sound detector amplifier,) the timer's output (pin 3) is set into HIGH for a duration set by C2, and R2. adjusting R1 will adjust how long it listens, from 10 seconds all the way down to 2/10ths of a second. this could be used to listen for hand claps.

published 10 years ago

nikisalli

10 years ago

So where do i find a 800uf capacitor?

MineDreeze

10 years ago

@niksalli so, you can get this small value simply with a little circuit made by parallel-way and serie-way capacitors :D

nikisalli

10 years ago

And all this for a capacitor?

MineDreeze

10 years ago

Yep

MineDreeze

10 years ago

But it's very small... we talk about 3 or 4 capacitor

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