Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Magnetic saturation
Patent
1993-09-09
1995-10-31
Wieder, Kenneth A.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Magnetic saturation
324126, G01R 3302, G01R 1900
Patent
active
054633133
ABSTRACT:
A current sensor for measuring a primary electrical current inducing a primary magnetic field defined over a known region includes a first sensor unit for measuring the line integral of the primary magnetic field along a first predetermined path included within the known region; and a second sensor unit for measuring the line integral of the primary magnetic field along a second predetermined path within the known region, the line integral of the primary magnetic field measured by the second sensor unit being a predetermined calibrated amount different from the line integral of the primary magnetic field measured by the first sensor unit. The current sensor further includes a current source for generating a current inducing a magnetic field to partially offset the difference between the line integral of the primary magnetic field measured by the first sensor unit and the line integral of the primary magnetic field measured by the second sensor unit.
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Bowser Barry C.
General Electric Company
Mora Enrique J.
Snyder Marvin
Wieder Kenneth A.
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