Current sensor
First Claim
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1. A current sensing device, comprising:
- a magnetic core comprising an air gap interface comprising a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, an end of the first portion being connected to a first end of the second portion, a second end of the second portion being connected to a first end of the third portion, a second end of the third portion being connected to a first end of the fourth portion, a second end of the fourth portion being connected to an end of the fifth portion, a cavity within the magnetic core being formed by the second portion, the third portion, and the fourth portion; and
a magnetic field sensor positioned substantially within the cavity between the second portion and the fourth portion of the air gap interface, the magnetic field sensor being configured to sense a magnetic field induced by an electrical current that is conducted through a conductor passing through a central opening of the magnetic core.
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Abstract
This disclosure is directed to current sensing techniques for use within a magnetic current sensor. According to one aspect of the disclosure, a current sensing device includes a magnetic core, and a magnetic field sensor positioned substantially within a cavity formed by an air gap interface of the magnetic core and configured to sense a magnetic field induced by an electrical current that is conducted through a conductor passing through a central opening of the magnetic core.
7 Citations
18 Claims
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1. A current sensing device, comprising:
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a magnetic core comprising an air gap interface comprising a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, an end of the first portion being connected to a first end of the second portion, a second end of the second portion being connected to a first end of the third portion, a second end of the third portion being connected to a first end of the fourth portion, a second end of the fourth portion being connected to an end of the fifth portion, a cavity within the magnetic core being formed by the second portion, the third portion, and the fourth portion; and a magnetic field sensor positioned substantially within the cavity between the second portion and the fourth portion of the air gap interface, the magnetic field sensor being configured to sense a magnetic field induced by an electrical current that is conducted through a conductor passing through a central opening of the magnetic core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method comprising:
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sensing a magnetic field induced by an electrical current that is conducted through a conductor passing through a central opening of a magnetic core with a magnetic field sensor positioned substantially within a cavity formed by an air gap interface of the magnetic core, wherein the magnetic core comprises an air gap interface comprising a first portion, a second portion, a third portion, a fourth portion, and a fifth portion, an end of the first portion being connected to a first end of the second portion, a second end of the second portion being connected to a first end of the third portion, a second end of the third portion being connected to a first end of the fourth portion, a second end of the fourth portion being connected to an end of the fifth portion, the cavity within the magnetic core being formed by the second portion, the third portion, and the fourth portion. - View Dependent Claims (16, 17, 18)
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Specification