Fascinating... it has an induction motor, but will produce 400Hz from either 50 or 60Hz? How is this possible? If you had a universal or permanent-magnet motor, you could vary the motor speed, but induction?
Written-pole motors... yeah, I've heard of those. Never seen one, though. I read on the web where they are being used in irrigation, since you can get them in just about any Hp and they run on single phase.
[This message has been edited by yaktx (edited 02-02-2006).]
