solycutema Posted April 6, 2007 Report Share Posted April 6, 2007 7V for a 9V battery and with the low current of this project is a battery that is wearing out. When it reaches 6V then it is dead.Please measure and report here the DC voltage measurements to ground of the microphone, pin 1 of U1, pin 7 of U1, pin 6 of U4 and pin 5 of U5. Please look at the connections and parts values on the schematic again.The DC voltage for the points : pin1 U1 = 6.9V, pin7 u1 = 7.3VPin6 U4 =8+V , pin5 U5 = 7+V Quote Link to comment Share on other sites More sharing options...
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