Magnetic movement sensing device
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United States of America Patent
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-
May 26, 1992
Issued Date -
N/A
app pub date -
Oct 12, 1989
filing date -
Feb 18, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic sensor for an encoder having tracks arranged alternately with N-and S-poles, comprising two MR thin films arranged at a near interval in the track direction with a direction perpendicular to the tracks as a longitudinal direction, oblique electrode formed obliquely to the longitudinal direction on the magnetoresistance effect detecting magnetic thin films to generate a bias magnetic field of opposite directions parallel to the tracks by a current flowing to the oblique electrodes in the MR thin films, thereby detecting poles arranged at random intervals.
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