The NEC defines a controller in a few different ways. In Art. 100, a controller is described as “a device or group of devices that serves to govern, in some predetermined manner, the electric power ...

The levitation type linear motor car is based on the basic principle that it repels with and attracts to the magnet by switching between two magnetic poles of N pole and S pole with electromagnets.

We recently published an article on the Power Electronics with the headline, “Unique Motor Uses Only Permanent Magnets – No Electric Power Required.” We received a firestorm of criticism that this ...