Hi I remember when I worked for Intel ( late 70's ). We bought a number of things like printers and disk drives that were for 220VAC/50Hz. On the disk drives, we used a file and some fine sandpaper to reduce the pully size on the motor to work with 60Hz. The voltage problem was solve by a transformer the was to be used on the uScope product. They made nice auto-transformers. The printer I modified just needed the transformer and the change of a cogged belt pully. I bought the pully from a place called Motion Industries. Now if it was 24VAC/400Hz, that is a different conversion problem. For those doing the auto-tranformer method, you need to know that only half the power goes through the transformer for a 110/220 or 220/110 change. Dwight