.~ With excitation winding and/or circuit control {11}
61
.~.~ Alternating current excitation
DEFINITION
Classification: 322/61
(under subclass 59) Subject matter wherein the current supplied to the excitation circuit is alternating current.
(1) Note. Where alternating current is rectified and the rectified current is supplied to the field winding, this patent is not classified in this subclass but will be found in subclass 79.
SEE OR SEARCH THIS CLASS, SUBCLASS:
79, see note 1, above.
SEE OR SEARCH CLASS
318, Electricity: Motive Power Systems,
244+, for alternating current commutating motors, subclasses 246+, for alternating current series motors, subclass 700, for synchronous motor alternating current energized field circuits; subclasses 731+ for induction motors having a secondary winding energized also by alternating current; subclass 737 for induction motors having an added primary winding energized by induction from a secondary motor winding. 363, Electric Power Conversion Systems,
174+, for dynamoelectric frequency converter systems wherein the converter is excited with alternating current.
