Magnetoresistor bridge probe for locating the position of a magn

Details Magnetoresistor bridge probe for locating the position of a magn Magnetoresistor bridge probe for locating the position of a magn

1978-04-14

1980-01-08

Corcoran, Robert J.

Electricity: measuring and testing

Magnetic

Magnetic sensor within material

324208, 324235, G01R 3312

Patent

active

041829859

ABSTRACT:
Apparatus for locating the position of at least one magnetic member relative to a nonmagnetic member includes a probe assembly movably disposed within the nonmagnetic member and including a nonmagnetic head having a pair of spaced permanent magnets mounted thereon. Each magnet has a variable resistor connected thereto, the resistance of each resistor varying directly with the strength of the flux field emanating from each magnet. The resistors are connected to a source of electrical energy for providing an electrical control signal, the magnitude of which varies in response to the movement of the probe assembly including the magnets and resistors relative to the magnetic member.

REFERENCES:
patent: 3088068 (1963-04-01), Hall, Jr. et al.
patent: 3234455 (1966-02-01), Idel
patent: 3846697 (1974-11-01), Cila et al.
patent: 3934160 (1976-01-01), Borcke
patent: 4041371 (1977-08-01), Hini

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