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I may take a PCB or two off your hands. Did you design the circuit or modify one you found? I understand the oscillator section (U1A) and the probe amp (U1B), but am not wraping my head around the bridge amplifier (I assume we are converting AC sinewave into DC but I am going to need to get the op-amp book out to figure out what else is happening.
Do you have a scope?
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