1-phase self starting disk-type brushless motor with cogging ele

Details 1-phase self starting disk-type brushless motor with cogging ele 1-phase self starting disk-type brushless motor with cogging ele

1986-09-22

1988-02-16

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310156, H01K 2114

Patent

active

047257520

ABSTRACT:
A 1-phase coreless disk-type brushless motor comprises a single position-detecting element located at a stationary position corresponding to a magnetically active conductor portion of an armature coil or coils on a stator yoke. A cogging-generating magnetic element having a width substantially equal to the width of each pole of a field magnet is located such that the center radial line between the width thereof is spaced by a distance equal to about three fourths of the pole width from another magnetically active conductor portion of the armature coil or coils so that the magnet rotor may stop at a position from which the motor can start itself.

REFERENCES:
patent: 3840761 (1974-10-01), Muller
patent: 4620139 (1986-10-01), Egami et al.

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