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1  Using Arduino / General Electronics / Re: Measure current ? on: October 11, 2012, 12:57:19 am
The best way to measure current is to use a wideband (including DC) current probe. If you don't have a current probe, then you need to insert a small resistor in the circuit to sense current. The resistor needs to be rated to handle the power, and it should be low enough that it doesn't effect the circuit much.

And you also find online stuff.
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