Reply to "LED AC Voltmeters & Ammeters"

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

ronald weatherby posted:
1. Is there a difference between AC and DC shunts
No, RMS current is the same, AC or DC.
2. Do they need to be connected for both ammeters and voltmeters
No, only ammeters need a shunt if one is not built-in.
3. What would be the best size shunt to buy, 10a, 15a, 20a??
What maximum current are you wanting to measure.
they seem to be simple devices that restrict current flow slightly so the meter can measure it. there is a big price margin between the stated ac ones and the others. See bay pics.
I can't imagine what difference they're trying to sell.

3/22/2010:24 AM

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No, RMS current is the same, AC or DC.

No, only ammeters need a shunt if one is not built-in.

What maximum current are you wanting to measure.

I can't imagine what difference they're trying to sell.

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