On Mon, Apr 8, 2013 at 2:03 PM, Christopher Head wrote: > > fine; it just recharged the battery a little bit. On the bench, it > turns out the cheap bench supply is able to source, but not sink, > current, so the supply rail went up to almost 30 volts. We replaced a > lot of TC4469s before figuring this out, and ended up insisting that all > parts be rated for at least 30 volts (as well as adding a TVS). What? That's a terrible solution. Where did the energy go after you made the change? Regards, Mark markrages@gmail --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .