Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With coupling means
Patent
1993-07-06
1995-10-17
Wieder, Kenneth A.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With coupling means
324126, 324117R, 336 55, 336 82, 338 49, G01R 104, G01R 120, G01R 33032, H01F 1504
Patent
active
054593956
ABSTRACT:
An alternating current sensor for measuring a primary alternating current inducing a magnetic flux density defined over a known region comprises: a first sensor for measuring changes in magnetic flux due to the primary current over a first predetermined area included within the known region; a second sensor for measuring changes in magnetic flux due to the primary current over a second predetermined area within the known region, the changes in magnetic flux measured by the second sensor being a predetermined amount different from the changes in magnetic flux measured by the first sensor; and a current source for generating a current inducing changes in magnetic flux over a third predetermined area to offset the difference between the changes in magnetic flux measured by the first sensor and the changes in magnetic flux measured by the second sensor.
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Bowser Barry C.
General Electric Company
Mora Enrique J.
Snyder Marvin
Wieder Kenneth A.
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