High bandwidth open-loop current sensor

Details High bandwidth open-loop current sensor High bandwidth open-loop current sensor

2011-07-12

2011-07-12

Nguyen, Ha Tran T (Department: 2858)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Magnetic saturation

C324S11700H

Reexamination Certificate

active

07977934

ABSTRACT:
Open-loop electrical current sensor (1) for measuring the electrical current flowing in a primary conductor, comprising a magnetic circuit (3) with an air-gap (4), and a magnetic field sensing device (5) positioned at least partially in said air-gap. The magnetic field sensing device comprises a circuit board (7), a first magnetic field detector (8) mounted on the circuit board, and a second magnetic field detector (11). The second magnetic field detector comprises a conductive coil formed on the circuit board, the output signals of the first magnetic field detector and the second magnetic field detector being adapted for connection to a signal processing circuit (6) generating an output signal representative of the primary electrical current.

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International Search Report and Written Opinion for PCT/IB2008/00487 issued by the European Patent Office on Jul. 14, 2008.

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