I'm having some problems with an amplifier circuit made with an LM358N and a condenser mic. I don't have the data sheet for the mic but i am pretty sure it has a 2.2kohm impedance and an operating voltage from 1.5V to 10V.
I made this setup http://circuitdiagram.net/simple-mic-pre-amp-based-lm358.html and it works great for about 20-30 seconds. After that it stops working. Pressing the reset button on the Arduino does not work. If I turn it off and then immediately turn it on it does not work. I have to wait for about 3-5 minutes for it to work for 20-30 seconds before it stops working again.
I thought this was (maybe still is) a capacitor problem so I switched the C2 with a 220uF @16V and the C1 with a 10uF @25V without success. It does the same thing powered at both 9V and 5V.
I am using an Atmega8A-PU with the Arduino S3V3 single sided board if this matters.
Is there another circuit/suggestion that works with an Arduino that someone could recommend?