I have been contemplating constructing some sort of interface for my soundcard to make it more useful as a measuring instrument. One of the things I want it to do is provide isolation to avoid damage from high voltages. It also should have a differential input to avoid ground-loops.
What's the best way to go about this? An instrumentation amp with a transformer-coupled input?
What's the best way to go about this? An instrumentation amp with a transformer-coupled input?