Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Magnetic saturation
Reexamination Certificate
1999-08-03
2001-08-07
Nguyen, Vinh P. (Department: 2858)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Magnetic saturation
C324S11700H
Reexamination Certificate
active
06271656
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus which senses an electrical current in a conductor and includes a magnetic flux sensor.
Hall effect devices have been used to sense variations in magnetic flux resulting from a flow of current through a conductor. Some of these known devices have used a flux concentrator to concentrate magnetic flux produced around the flow of current through the conductor. It has previously been suggested that an electrical current sensing apparatus could be constructed in the manner disclosed in U.S. Pat. Nos. 4,616,207 and 5,416,407.
SUMMARY OF THE INVENTION
The present invention provides an electrical current sensing apparatus which includes a magnetic flux sensor. The magnetic flux sensor is disposed within or adjacent to an opening formed in a conductor of electrical current. A variation in the flow of current through the conductor varies the flux to which the magnetic flux sensor is exposed.
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Hansen James Edward
Hastings Jerome Kenneth
Juds Mark Allan
Reid Scott
Solverson Mark George
Eaton Corporation
Nguyen Vinh P.
Tarolli, Sundheim, Covell Tummino & Szabo L.L.P.
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