Magnetic position detecting apparatus

Details Magnetic position detecting apparatus Magnetic position detecting apparatus

2006-07-04

2006-07-04

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207240, C324S207250

Reexamination Certificate

active

07071681

ABSTRACT:
In a position detecting apparatus1of the present invention, magnetic resistance circuits A and B of a first main circuit10include a reference magnetic resistance element +A, an even harmonic correction magnetic resistance element +A3,being placed at a position shifted by (1/4)λ or (3/4)λ from the reference magnetic resistance element +A, with respect to a reference wave, and a third harmonic correction magnetic resistance element +A2,being placed at a position shifted by (1/6)λ from the reference magnetic resistance element, with respect to a reference wave, and magnetic resistance circuits A′ and B′ of a second main circuit20include the magnetic resistance circuit of the second main circuit20includes a reference magnetic resistance element +A′1,a fifth harmonic correction magnetic resistance element +A′2,being placed at a position shifted by (1/10)λ from the adjacent magnetic resistance element, with respect to a reference wave and a fifth harmonic correction magnetic resistance element +A′2,being placed at a position shifted by (4/15)λ from the reference magnetic resistance element +A′1,with respect to a third harmonic wave.

REFERENCES:
patent: 4874053 (1989-10-01), Kimura et al.
patent: 5909115 (1999-06-01), Kano et al.
patent: 6600308 (2003-07-01), Shirai et al.

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