Temperature compensated current sensor using reference magnetic field
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United States of America Patent
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Oct 9, 2007
Grant Date -
Sep 6, 2007
app pub date -
Nov 6, 2006
filing date -
Jan 16, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is described to provide temperature compensation and self-calibration of a current sensor based on a plurality of magnetic field sensors positioned around a current carrying conductor. A reference magnetic field generated within the current sensor housing is detected by a separate but identical magnetic field sensor and is used to correct variations in the output signal due to temperature variations and aging.
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