Inverted magnetic isolator
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United States of America Patent
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May 31, 2011
Grant Date -
Oct 8, 2009
app pub date -
Jun 10, 2009
filing date -
Sep 17, 2004
priority date (Note) -
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Abstract
A current determiner comprising a first input conductor and a first current sensor, formed of a p.lurality of magnetoresistive, anisotropic, ferromagnetic thin-film layers at least two of which are separated from one another by a nonmagnetic layer positioned therebetween, and both supported on a substrate adjacent to but electrically isolated from one another with the first current sensor positioned in those magnetic fields arising from any input currents. A first shield/concentrator of a material exhibiting a substantial magnetic permeability is positioned between the substrate and the first input conductor. The substrate can include a monolithic integrated circuit structure containing electronic circuit components of which at least one is electrically connected to the first input conductor. Magnetically permeable material can be provided in supporting structures.
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