Ok and there is a device where I compare only current sources signals? I want to measure 50A to compare with 20A, lets say. Its analog to op amp comparator for voltages, but instead voltage I wanna current.Normal people compare similar items. They compare apples to apples, oranges to oranges. Current is not voltage. Voltage is not current. There is no point comparing them.
I know it is late/early.If this is main's current then you will need isolation, such as by using a current transformer to generate a voltage to the current (the part in bold makes no sense to me), and isolate the voltage from the current.
I meant to generate a voltage from the current.I know it is late/early.
HiIf this is main's current then you will isolation, such as by using a current transformer to generate a voltage to the current, and isolate the voltage from the current.
Is there such an animal?Hi
Or you can use an "RMS to DC" converter chip that provides isolation.
Thinking of e.g. MOSFET VGS to IDS curves, not sure but maybe with a graph with an -X and X and a Y axis? Someone far smarter than I am could figure out how to plot that with code and any computing device from a Pi to a datalogger or similar. Would take a while to consider how to put together analog interface as I've never even considered such a circuit.I would like to know if there are any device which can compare current source like 5A(alternating) with a voltage source like 1V (alternating) and give me an output. If not, which circuit I should make to have this?
Yes...a few manufactures make them.Is there such an animal?
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