Magnetoresistive sensor having protective dummy elements

Details Magnetoresistive sensor having protective dummy elements Magnetoresistive sensor having protective dummy elements

1987-04-24

1989-01-31

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

Displacement

338 32R, 324252, 324262, G01B 730

Patent

active

048018813

ABSTRACT:
A rotation information detector comprising plural magnetoresistant elements arranged parallel and adjacent to a rotating magnetic field and dummy elements located parallel on both sides of the magnetoresistant elements wherein rotation information is detected on the basis of those electric resistances on the magnetoresistant elements which change responsive to the change of the magnetic field, characterized in that boundary patterns are formed between the magnetoresistant elements and the dummy ones, respectively, so that the magnetoresistant elements can be distinctly distinguished from the dummy ones to enhance the efficiency of appearance check.

REFERENCES:
patent: 4079360 (1978-03-01), Ookubo et al.
patent: 4403187 (1983-09-01), Takahashi et al.

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