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landyacht318's avatar
landyacht318
Explorer
Sep 08, 2014

eTopxizu (cheapowatt) 30 amp power supply Guinea Pig

For under 23$ and free 2 day shipping, I decided to click 'place order' on this 30 amp MW Clone I have 2 batteries, a flooded and an AGM battery which I never discharge together, but which req...
2112's avatar
2112
Explorer II
Sep 21, 2014
MEX - Why not use a high current N chnnel MOSFET rather than the rheostat? Have a 13V or so zener at the psu output to bias the FET via a low current pot. The zener will assure consistent bias no matter what the psu output is, within reason.
There isn't control feedback either way so some tweaking during the charge cycle would still be required.

using a very low value sense resistor to create feedback would be the ideal solution for external current control.

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