> >You might consider building an emitter follower circuit and using a >potentiometer in the base to control the base voltage. I don't know how >that would work with an AC motor. I used something like that on an old >auto dc fan motor to get a variable speed control - worked OK. Likely to get REALLY hot. AC motors aren't designed to be speed controlled, except by altering the drive frequency (within limits) -- Dave's Engineering Page: http://www.dvanhorn.org Where's dave? http://www.findu.com/cgi-bin/find.cgi?kc6ete-9 -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads