V G wrote: > Hey all, instead of using a wire wound resistor for testing battery > drain, I'm thinking of using a heat sink bound MOSFET and control the > drain-source current with the gate. I'm looking to get around a 0.5 - > 2 ohm resistance between drain and source. Is this possible? Sure it's possible, but will require active control and feedback else you'l= l have no idea what is actually going on. The easiest is probably a low side current sense resistor with a opamp driving the gate to keep the voltage accross the resistor at the desired level. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .