1-phase energized disk-type brushless motor

Details 1-phase energized disk-type brushless motor 1-phase energized disk-type brushless motor

1986-09-09

1988-07-12

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310156, 310181, 310268, 310DIG6, 310138, 310254, H02K 1100

Patent

active

047572221

ABSTRACT:
A 1-phase energized disk-type brushless motor or fan motor comprises a single position detecting element located at a position on a printed circuit board corresponding to one of magnetically active conductor portions of one of stator coils of the stator armature. The magnetically active conductor portions include a width substantially equal to the width of each pole of the magnet rotor. A cogging generating magnetic member or plate having a width substantially equal to the pole width is located on the printed circuit board such that it is spaced by about three fourths of the pole width from one of the conductor portions of one of the stator coils so that the magnet rotor may stop with one pole thereof just opposed to the magnetic member, thereby assuring self-starting of the motor and uniform turning torque over the entire rotation of the motor.

REFERENCES:
patent: 3840761 (1974-10-01), Muller
patent: 4115715 (1978-09-01), Muller
patent: 4554473 (1985-11-01), Muller
patent: 4642496 (1987-02-01), Kerviel
patent: 4704566 (1987-11-01), Hirano

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