Magnetoresistive wheatstone bridge with compensating current conductor for measuring an electric current
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United States of America Patent
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Aug 3, 1999
Grant Date -
N/A
app pub date -
Mar 26, 1997
filing date -
Sep 26, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Measuring devices for determining magnetic fields to be used in particular for the potential-free measurement of the strength of an electric current which generates such a magnetic field. To obviate the need for an intermediate element specially connected into the relevant current conductor and to allow the measurement device instead to be accommodated in a clamp device which needs only to be slipped over the current conductor, the proposed embodiment has two measuring bridges which are fixed on either side of the current conductor, the staggering of the two bridges is assessed from the current magnetic field via a control circuit.
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