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TEMPERATURE-COMPENSATED SHUNT CURRENT MEASUREMENT

  • US 20110089931A1
  • Filed: 10/19/2009
  • Published: 04/21/2011
  • Est. Priority Date: 10/19/2009
  • Status: Abandoned Application
First Claim
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1. A current sensor, comprising:

  • a shunt, configured for conveying an electric current, and having a resistance which varies with a temperature of said shunt;

    a first resistant element connected between said shunt and a first output terminal, at least a portion of said first resistant element being in thermal contact with a first predetermined location subject to thermal drift on said shunt, and having a resistance which varies in accordance with a temperature of said shunt, such that a change in the resistance of said shunt causes a compensating change in the gain of an associated amplifier; and

    a second output terminal, said first and second output terminals being configured for measurement of a voltage over said shunt.

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