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gshubham96
10-19-2010, 03:40 PM
HI everybody,
I want a sound sensor circut such that when there is some noise it light a led

vikas
10-19-2010, 06:33 PM
Please give a more detailed description and might recommend something.

otherwise here you go ...
http://www.free-circuits.com/circuits/alarms-control-timers/339/sound-controlled-filp-flop

gshubham96
10-19-2010, 08:06 PM
hi,
i just want to light a led when some noise is heard
please,visit this forum,you will understand.
http://www.roboticsindia.com/showthread.php/3656-sensing-human-body

Ulhas
10-20-2010, 08:23 AM
Use this circuit and connect LED instead of relay coil

http://www.electronickits.com/kit/complete/elec/k126.htm