Magnetic detector employing magnetic resistance elements for det

Details Magnetic detector employing magnetic resistance elements for det Magnetic detector employing magnetic resistance elements for det

1996-05-17

1998-06-23

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Displacement

324252, 333 32R, G01B 714, G01R 3306

Patent

active

057709424

ABSTRACT:
A magnetic detector comprises a magnetic recording medium in which a magnetic signal of wavelength .lambda. generated by two types of opposing magnetic poles which are repeated at constant intervals is recorded and a magnetic resistance element that is arranged opposite to the magnetic recording medium and changes its resistivity value according to the change in a magnetic field. The magnetic resistance element is comprised of first and second current paths constructed of a plurality of magnetic resistance strips. The first current path and the second current path are connected in series with each other. Each magnetic strip of the first current path is arranged parallel to that of the second current path at an interval of .lambda./4 to form a plurality of magnetic resistance strip sets. Centers of the magnetic strip sets are spaced by 3n.lambda./4 from each other, where n is an integer of 1 or greater.

REFERENCES:
patent: 5047716 (1991-09-01), Katagirl
patent: 5243280 (1993-09-01), Kusumi
patent: 5453684 (1995-09-01), Nakayama

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