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United States of America Patent
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Nov 20, 2007
Grant Date -
Oct 19, 2006
app pub date -
Apr 13, 2006
filing date -
Apr 13, 2005
priority date (Note) -
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Abstract
A Hall effect generator chip is mounted between adjacent ends of an annular, horseshoe spacer of nonmagnetic material. The generator is sensitive to the flux density (B field) tangential to its top and bottom surfaces. The spacer and generator are sandwiched between ferromagnetic rings, each having a small air gap overlying/underlying the generator. A circuit including the generator supplies an output linearly proportional to the current of an adjacent conductor with reduced hysteresis and small variability over a temperature range.
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