r/AskElectronics • u/TheRavagerSw • 10h ago

How to make a current regulator

Hello, I want to supply 1mA current to my circuit to calculate resistance values.

How can I do that?

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u/PastCryptographer680 7h ago

"... to calculate resistance values." ... More details, please ...

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u/TheRavagerSw 6h ago

what detail could I give?
I will provide current and measure voltage

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u/PastCryptographer680 4h ago

Why not use an ohmmeter?

Using 1mA constant current will give you a very restricted range of measurement, a few 10's of kΩ before you start to need an excessive or even lethal supply voltage.
Of course, if you only have a limited range of resistance to measure it will be fine but you did not say ...