公开(公告)号：US3619730A

公开(公告)日：1971-11-09

申请号：US3619730D

申请日：1969-09-24

Applicant: NAT RES DEV

Inventor： BROADWAY ALEXANDER R W ,  FONG WILLIAM ,  RAWCLIFFE GORDON H

IPC: H02K17/06 ,  H02K17/14 ,  H02K17/16

CPC classification number: H02K17/06

Abstract: A two-speed, single-phase, alternating current motor having a concentric wound stator winding comprising a main energizing winding and an auxiliary starting winding, the main winding (or both windings) being tapped and arranged for reconnection at one speed to provide current reversal in selected winding parts, thus providing pole-changing by the known method of pole-amplitude modulation.