Review on ZRM Digital Voltmeter Ammeter Display by Brian Fisher
the current measurement refers to the power return.
I had to redesign my application to account for the fact that the current measurement is not independent of the reverse power supply connection. This is the first time I've tested an ammeter that doesn't float. It is expected that the voltage is measured against ground, not the current. Still worth the money, but this surprise required some extra engineering to make it work.
- Easy setup
- No
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