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MarkS · 9th January 2020, 19:40

AC voltmeters will give differing results depending on how they work.

Give them a non-sinusoidal waveform, or a waveform with a DC component, and anything may happen.

Take no notice of what an AC voltmeter reads with anything but a pure AC 50Hz sinewave.

If you must use an AC meter, know how your meter works, or prepare to be led up a blind alley !

9th January 2020, 19:40	#5
MarkS Gets stuck in Rover 75 Diesel Tourer, called Perseverance Join Date: Nov 2011 Location: Bournemouth Posts: 664 Thanks: 189 Thanked 157 Times in 108 Posts	AC voltmeters will give differing results depending on how they work. Give them a non-sinusoidal waveform, or a waveform with a DC component, and anything may happen. Take no notice of what an AC voltmeter reads with anything but a pure AC 50Hz sinewave. If you must use an AC meter, know how your meter works, or prepare to be led up a blind alley ! Last edited by MarkS; 9th January 2020 at 20:07..