Rotation detecting apparatus using magnetroresistive element wit

Details Rotation detecting apparatus using magnetroresistive element wit Rotation detecting apparatus using magnetroresistive element wit

1993-05-17

1995-06-06

Strecker, Gerard R.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

310 68B, 32420721, G01P 348, G01P 3487, H02K 2908

Patent

active

054225698

ABSTRACT:
A rotation detecting apparatus including a magnet having alternatively-arranged N-poles and S-poles on a rotator, and a magnetoresistive element having plural (six) magnetoresistive units which are continuously arranged at a predetermined interval on a stator, and signal output units which are provided at prescribed three positions of connection points of the plural detection units, wherein the detection units serving to detect magnetic field which is varied in accordance with rotation of the rotor, and the signal output units serving to output signals whose phases are different from one another by 120.degree. on the basis of the detection of the magnetic field by the detection units.

REFERENCES:
patent: 4039936 (1977-08-01), Jones et al.
patent: 4599561 (1986-07-01), Takahashi et al.
patent: 4725776 (1988-02-01), Onodera et al.
patent: 4801830 (1989-01-01), Ogino et al.
patent: 5198762 (1993-03-01), Shimoe et al.

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