Hall effect apparatus for determining the angular position of a

Details Hall effect apparatus for determining the angular position of a Hall effect apparatus for determining the angular position of a

1976-11-08

1978-04-25

Corcoran, Robert J.

Electricity: measuring and testing

Magnetic

Displacement

338 32H, 310168, 310DIG3, G01R 3312

Patent

active

040865339

ABSTRACT:
A device for determining the angular position of a rotating part includes first and second parallel arranged magnets forming a symmetric magnetic excitation circuit with a Hall-effect element disposed on the axis thereof. The rotating part has first and second elements made of a soft magnetic material which are angularly displaced so as to alternately pass by the first and second magnets, respectively, to produce first and second oppositely directed transverse magnetic field components, H, at the Hall-effect element which thereby generates a signal whose polarity reverses to indicate angular position of the rotating part.

REFERENCES:
patent: 3179856 (1965-04-01), Kuhrt et al.
patent: 3226631 (1965-12-01), Kuhrt et al.
patent: 3239786 (1966-03-01), Shang
patent: 3366909 (1968-01-01), Hini et al.
patent: 3777273 (1973-12-01), Baba et al.
Brann et al., Magnetic Polarity Reversal for Hall Effect Control Device, IBM Tech. Bull., vol. 14, No. 6, Nov. 1971, pp. 1855-1856.

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