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Current sensor

  • US 20070090826A1
  • Filed: 10/19/2006
  • Published: 04/26/2007
  • Est. Priority Date: 10/21/2005
  • Status: Active Grant
First Claim
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1. A current sensor for detecting current flowing though a conductor, the current sensor comprising:

  • a first magnetic core that is shaped like a ring to surround a portion of the conductor, the first magnetic core having at least two gaps therein, each of which is defined by adjacent ends spaced from each other by a first distance;

    a magnetic sensing element placed in at least one of the gaps to detect a magnetic field induced in the first magnetic core by the current flowing through the conductor; and

    a second magnetic core placed near the surrounded portion of the conductor to divide the conductor into at least two channel portions, wherein a second distance between the first and second magnetic cores is smaller than the first distance.

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