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Back at school we had a VCR-sized instrument called a vector voltmeter, which somehow measured voltage and phase angle. Doing a Google search, I see that they still exist.
You should be able to get the same result reading a scope display.
Do anyone ever use this thing nowadays when troubleshooting polyphase circuits?
You should be able to get the same result reading a scope display.
Do anyone ever use this thing nowadays when troubleshooting polyphase circuits?