Magnetoresistance-effect magnetic sensor of the temperature compensating type
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United States of America Patent
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Dec 31, 1996
Issued Date -
N/A
app pub date -
Jun 23, 1994
filing date -
Jul 30, 1990
priority date (Note) -
Expired
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Abstract
A magnetoresistance-effect magnetic sensor provides an effective output even in atmospheres higher in temperature than those relevant to prior art sensors. The invented sensor has magnetoresistance-effect devices each connected to a constant current circuit. The voltage across each device is output as a magnetic sensitive output. With this structure, a temperature rise induced decrease in magnetoresistivity of the device is compensated for by an increase in intrinsic resistance thereof attributable to temperature rise. Thus, the sensor provides a reliable output even in high temperature atmospheres.
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