| 摘要 |
A single-phase AC-motor (1) comprises a rotor having surface-mounted magnets (13,16,313,316,413,416). Adjacent to each magnet (13,16,313,316,413,416) a small secondary magnet (14,17,314,317) of opposite polarity (or a less magnetised magnet or iron (414,417) is attached.
Purpose: Avoiding reverse rotation.
The stator (2,102) has concentrated windings around its teeth (6,7,106,107) or around its yoke sections (508,509). The stator may also comprise an annular coil (209,809) with poles (206,207,806,807) having an indentation (223,823) on one side.
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