On Fri, Sep 30, 2011 at 1:01 PM, doug metzler wrote= : > I'm thinking something benchtop with an analog ammeter and a big set > dial that I can use to test FET heat under different load conditions. > > I did some googling but I only found babies - 0-1A. > > Do you guys know of anything that might fit the bill? Unfortunately > cost is a large consideration right now, but high accuracy is not > necessary. > > for my purposes I'll be testing with 15VDC > I designed this a few weeks ago: http://solar-blogg.blogspot.com/2011/09/constant-current-sourcesink.html You can add as many MOSFETs as you like. Can sink a LOT of current. Play with the simulation yourself. Let me know if you want the LTSpice simulatio= n file. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .