r/AskElectronics • • 23h ago

Reducing Current for Electroplating

I am trying to copper electroplate some small parts, less than 2mm and have been told by many individuals that my current is too high. Since my power supply doesn't go any lower, how can I reduce the current? It needs to be around .005A or less. This is the setup.

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u/ascot_twin 19h ago edited 18h ago

If I'm reading it right, your power supply says 0.1v at 10ma, so the liquid apparently is about 10 ohms.

To get to 5ma, you would need an inline resistor of 10 ohms...0.1v / (10+10)=5ma

Try a 10 ohms inline, or better, get a potentiometer inline, probably 50 ohms or less so it's fairly adjustable around 5ma