(under subclass 720) Subject matter wherein the electric circuit includes means to regulate the energization of the alternating current winding of the motor under the control of the rotor rotation.
(1) Note. The regulating means may be controlled by, for example, the speed of the rotor and the position of the rotor
shape with respect to the location of the rotating alternating electromagnetic field or with respect to the position of a direct current electromagnetic field or permanent magnet field.
SEE OR SEARCH THIS CLASS, SUBCLASS:
461+, for speed or rate of movement control of a motor generally.
