Hall-effect ferromagnetic-article-proximity sensor
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United States of America Patent
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Jul 14, 1998
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N/A
app pub date -
Jun 7, 1995
filing date -
Jun 7, 1995
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Abstract
A Hall-effect sensor is presented which is adapted to sense a ferromagnetic object, including an integrated circuit chip having a planar Hall element which is positioned in, parallel to, and defines a sensor plane having a front side and a back side, and which element is normal to and centered on a sensor axis, and a magnet structure having an N pole and an S pole, the magnet structure being positioned behind the sensor plane and positioned so that an S pole and an N pole are adjacent each other and both are adjacent the element.
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