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Current sensor for measuring an electrical current in a circuit having a plurality of electrical conductors

  • US 7,477,058 B2
  • Filed: 05/10/2006
  • Issued: 01/13/2009
  • Est. Priority Date: 05/12/2005
  • Status: Expired due to Fees
First Claim
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1. A current sensor for measuring an electrical current on an electrical circuit having a plurality of electrical conductors, said current sensor comprising:

  • a plurality of ring-shaped magnetic structures each for receiving one of said electrical conductors whereby the magnetic structures can be positioned along said electrical conductors, and each having an opening therein receiving a magnetic flux sensor for evaluating a magnetic flux generated by a current flowing in said one of said electrical conductors and for providing a signal representative of said current;

    a global ring-shaped magnetic structure surrounding said plurality of electrical conductors; and

    a global magnetic flux sensor for evaluating a magnetic flux generated by currents flowing in said plurality of electrical conductors to measure a differential reading of current flowing in said plurality of electrical conductors.

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