/diy/ - Do It Yourself

>>1661463
>>1661481
Pic related, top R is 1.25/Imin and rated for max power, bottom pot is as small as possible but at least 500 ohms, red R is Rpot*(1+(Imin/Imax)), I think. if accuracy and linearity are a particular concern, it wouldn't hurt to add a voltage follower, indicated in red