> Hello,
>
> I need to gang two switching power in parallel to double current
> capacity. What is a good voltage drop to target for the balancing
> resistors??
>
> //You wouldn't want to use resistors, at all, unless your current demand
> is very low. Even 0.1 Ohms at 20A provides 2V drop -- way too much for
> most any amateur application. Better to use low-drop power rectifiers
> (Schottky barrier high-current rectifiers with Vf drop of ~0.3V @
> 20-30-40A are readily available) or low-Rds power FETs (which can have
> forward drop of <0.1V at 20-30A). These will act as a power OR-gate and
> protect both supplies while providing reasonable current sharing if the
> supplies are carefully adjusted for identical output voltage. -WB2WIK/6
>
>
>
>
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