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2753 Views 2 Replies Latest reply: May 3, 2014 1:17 PM by davecuthbert RSS
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May 2, 2014 12:01 PM

Current meter circuit

How exactly does a current meter circuit work?  Does it use a form of voltage over a miniscule ohm resistor measurement to calculate the current?  Or some form of hall sensor?  I just don't see how the voltage drop measurement wouldn't be highly inefficient and how the hall sensor could be accurate.  Is there a better way?

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