Hall element with bucking current and magnet biases

Details Hall element with bucking current and magnet biases Hall element with bucking current and magnet biases

1982-01-26

1984-08-14

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetometers

338 32H, G01R 3306, H01L 4306

Patent

active

044659768

ABSTRACT:
A strong magnet is bonded to a conventional Hall element package. A bias current is introduced at one of the output terminals of the Hall element in the direction to cause a reduction in the magnet-bias-induced output voltage. This output voltage is easily reduced by this means to zero. The resulting Hall-element detector is shrouded by a large magnetic biasing field while presenting a low or zero DC output component upon which the signal voltage will be superimposed.

REFERENCES:
patent: 3195043 (1965-07-01), Burig et al.
patent: 3416010 (1968-12-01), Kuhnlein et al.
patent: 3613021 (1971-10-01), Scheidt
Gersbach, J. E., "Hall Cell Bias and Offset Circuit", IBM Technical Disclosure Bulletin, vol. 6, No. 20, Nov. 1977, pp. 2149-2150.
Sprague Engineering Bulletin, 27701, "Hall Effect IC Application Guide", Mar., 1980, p. 17.

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