Current difference sensors, systems and methods

US8975889B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Udo Ausserlechner · Villach, AT
• Berthold Astegher · Klagenfurt, AT

Key dates

• Filing date: Jan 24, 2011
• Grant date: Mar 10, 2015
• Expiry date: Feb 25, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/096
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Embodiments relate to current difference sensors, systems and methods. In an embodiment, a current difference sensor includes first and second conductors arranged relative to one another such that when a first current flows through the first conductor and a second current, equal to the first current, flows through the second conductor, a first magnetic field induced in the first conductor and a second magnetic field induced in the second conductor cancel each other at a first position and a second position; and first and second magnetic field sensing elements arranged at the first and second positions, respectively.