Patent ID: 9678172
Date: 2017-06-13
CPC Classifications: G01R

Claim:
1. A current difference sensor comprising: a first conductor configured to conduct a first current that generates a first magnetic field component in a first direction; a second, different conductor configured to conduct a second current that generates a second magnetic field component in the first direction; a first magnetic field sensing element, arranged at a first position, configured to sense the first magnetic field component and the second magnetic field component in the first direction; a second magnetic field sensing element, arranged at a second position, configured to sense the first magnetic field component and the second magnetic field component in the first direction; wherein the first conductor and the second, different conductor, located proximate to one another, are configured to approximately cancel the first magnetic field component in the first direction and the second magnetic field component in the first direction in response to the first current flowing through the first conductor and the second current flowing through the second conductor.