Hall effect sensor and component providing differential detectio

Details Hall effect sensor and component providing differential detectio Hall effect sensor and component providing differential detectio

1991-05-29

1993-03-09

Sikes, William L.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307278, 307355, 328 1, 328 5, 338 32R, 338 32H, 324251, 3242072, H03K 1790, H03K 522

Patent

active

051928779

ABSTRACT:
As a component belonging to a class of components having hysteresis cycles of similar characteristics, the component of the invention subjects group of probes, in the absence of field-disturbing members situated in relationship with the probes, to a determined induction field so that a "bias" induction difference (B.sub.O) appears between the two groups, which difference is not less than the value of the high switchover threshold (B.sub.H), or not greater than the value of the low switchover threshold (B.sub.B), or else lies between the switchover thresholds (B.sub.H and B.sub.B), thereby obtaining a signal in a determined logic state at the output from the hysteresis level comparator in spite of induction difference dispersions lying between the minimum value of the low threshold (B.sub.Bmin) and the maximum value of the high threshold (B.sub.Hmax). The invention is applicable to differential detection Hall effect sensors.

REFERENCES:
patent: 3789311 (1974-01-01), Masudo
patent: 3800193 (1974-03-01), Ashar et al.
patent: 4123772 (1978-10-01), Janssen
patent: 4518918 (1985-05-01), Avery
patent: 4829248 (1989-05-01), Loubier
patent: 4859941 (1989-08-01), Higgs et al.
patent: 5045920 (1991-09-01), Vig et al.
IBM Technical Disclosure Bulletin, vol. 28 #10 Mar. 1986, New York, pp. 4498-4499 "Magnetoresistive Sensing of Print Actuators".

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