> You can only change current by changing voltage or resiatnce, as per Ohms > law! A bench supply in constant current mode simply adjusts voltage to > achieve the desired current through an arbitrary resistance Well, we've come full circle, because that's what I said in my original post. Since then, others appeared to have contradicted that, saying you can manipulate current directly. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads