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Hi hunterage2000,
Sometimes it helps to take a different approach.
I suggest for the moment you forget the AC input issue and focus on whether the bridge + instrumentation amplifier setup behaves correctly.
The amplifier will work equally well with DC input values.
I'd try the following ...
With the bridge in one condition [e.g post #31 left] replace the AC source with a DC excitation voltage of some value - let's say 1.5V - with the same polarity as shown on your AC source. Measure the amplifier DC output. Swap the bridge to the alternate case [post #31 right] with the DC excitation unchanged. Measure the amplifier DC output again. Do you see a consistent result with the same DC magnitude output but with a polarity reversal? If you do then the amplifier is OK.
Sometimes it helps to take a different approach.
I suggest for the moment you forget the AC input issue and focus on whether the bridge + instrumentation amplifier setup behaves correctly.
The amplifier will work equally well with DC input values.
I'd try the following ...
With the bridge in one condition [e.g post #31 left] replace the AC source with a DC excitation voltage of some value - let's say 1.5V - with the same polarity as shown on your AC source. Measure the amplifier DC output. Swap the bridge to the alternate case [post #31 right] with the DC excitation unchanged. Measure the amplifier DC output again. Do you see a consistent result with the same DC magnitude output but with a polarity reversal? If you do then the amplifier is OK.
