Electricity: measuring and testing – Magnetic – Magnetometers
Patent
1994-12-14
1997-12-09
Snow, Walter E.
Electricity: measuring and testing
Magnetic
Magnetometers
338 32R, G11B 533, G01R 3306, G01R 3302, G01B 5127
Patent
active
056964471
ABSTRACT:
The invention concerns a magneto-resistive magnetic sensor comprising a magneto-resistive element, the resistance of which varies as a function of the applied magnetic field and two pole pieces that collect the magnetic field to be detected so as to concentrate it in the magneto-resistive element, each pole piece being positioned to partially overlap the magneto-resistive element, a current I passing through this magneto-resistive element, wherein the zones of the magneto-resistive element that are overlapped by pole pieces are cut out such that the current that passes through the magneto-resistive element is located in a zone in the air gap between the two pole pieces.
REFERENCES:
patent: 4649447 (1987-03-01), Huang et al.
patent: 4734644 (1988-03-01), Imakoshi et al.
patent: 5119025 (1992-06-01), Smith et al.
Blanchard Nicolas
Coutellier Jean-Marc
Valet Thierry
"Thomson-CSF"
Snow Walter E.
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