Disk type motor speed detecting device

Details Disk type motor speed detecting device Disk type motor speed detecting device

1982-02-03

1985-02-12

Krawczewicz, Stanley T.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

310156, G01P 348, G01P 354

Patent

active

044994206

ABSTRACT:
A disk type motor speed detecting device is made up of a doughnut shaped plate high in magnetic permeability secured to the inner surface of the lower plate of the body, a coil wound on a small portion of the doughnut shaped plate; a doughnut shaped magnet with S and N poles one of which has a magnetization angle of more than 180.degree., a disk-shaped yoke secured to the magnet, and a rotary shaft adapted to rotate the magnet relative to the doughnut shaped plate.

REFERENCES:
Kuntzleman, Magnetic Emitter, IBM Technical Disclosure Bulletin, Dec. 1958, p. 41.

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