On Tue, Apr 24, 2012 at 4:27 AM, wrote: > Ah, so it is a capacitor run motor (as distinct from a capacitor start mo= tor, where a centrifugal switch opens the capacitor circuit one the motor i= s up to speed, typically used on a saw bench and the like). I did a bit of searching around for "capacitor run synchronous motor", but mostly found much larger units (rated in HP). Mine is about the size of an espresso mug. Presumably if I took out the cap things wouldn't run well (or at all). Because of that I'm considering leaving the existing board in place and just tagging some leads on to it. That way the current configuration of caps and resistors stays in place. I'm still confused as to how they manage to get 2 speeds out of it. If indeed something is shorting, then there really are only two options. Assuming AC connected to the green and white wires, the yellow wire could either be shorted to white (shorting out the run cap), or to green (basically then connecting the cap directly across the AC line. Thoughts? Josh --=20 A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. =A0 =A0 =A0 =A0 -Douglas Adams --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .