Hi, What a great group of people. Anybody got any suggestions about driving small, high speed 3 phase motors. I have a small die grinder that runs up to 10,000 rpm. Plate says 'MOGFREKVENS H F 400 - 1200 Hz 3PH 17 - 50 volts 75 watts. The manufacture I think it is Swedish manufactured but the motor plate has been defaced . No 563 Rotorn Fabric Hallas Stilla PA Inkopplad motor is all that is ledgible. Regards Andy -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist