US 11,754,600 B1
Method for determining an electric current with a shunt arrangement, with compensation of heating in the shunt arrangement generated by the current
Michael Maixner, Bietigheim (DE)
Assigned to BRUKER BIOSPIN GMBH, Ettlingen (DE)
Filed by Bruker BioSpin GmbH, Ettlingen (DE)
Filed on Feb. 23, 2023, as Appl. No. 18/173,102.
Claims priority of application No. 10 2022 201 996.2 (DE), filed on Feb. 25, 2022.
Int. Cl. G01R 19/32 (2006.01); G01R 19/25 (2006.01); G01R 15/04 (2006.01); G01R 1/20 (2006.01)
CPC G01R 19/32 (2013.01) [G01R 1/203 (2013.01); G01R 15/04 (2013.01); G01R 19/2509 (2013.01)] 17 Claims
OG exemplary drawing
 
17. A measuring arrangement for determining an electric current (Is), comprising:
a shunt arrangement comprising:
at least three identical resistor elements having, at identical temperatures, a same resistance value, the at least three identical resistor elements being thermally coupled, in an identical manner, to a common base plate, wherein the at least three resistor elements are electrically interconnected such that the electric current (Is) is, when flowing through the shunt arrangement, at least partially divided such that a first local electric current (I1) through a first resistor element is not equal to a second local electric current (I3) through a second resistor element;
two voltage taps configured to directly or indirectly determine a first voltage dropping across the first resistor element and a second voltage dropping across the second resistor element, and
an evaluator configured to determine the electric current (Is) is from the first voltage and the second voltage measured by the two voltage taps.