| http://www.w3.org/ns/prov#value | - You also do not want it to be too high so that you lose a bunch of efficiency.A good option here might be to use a much smaller resistor (0.1 Ohm sense resistors are common, for example) and an opamp with some pre-determined gain to get the voltage to where you want to sense it with your microcontroller.here is an example of what a robust circuit would look like as per the above.
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