Sound to light circuit using 230 Volts lamps

ericgibbs

Joined Jan 29, 2010
18,766
hi,
Why don't you try applying about 9V, via a 4k7 resistor to the the active pin and use a scope to check that its faulty or not.?
Post the results you see on the scope.
The case of the electret must be connected to the negative side of the 9V.
E
 
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