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Method for forming a magnetic sensor that uses a lorentz force and a piezoelectric effect

  • US 20020190712A1
  • Filed: 07/29/2002
  • Published: 12/19/2002
  • Est. Priority Date: 09/01/2000
  • Status: Active Grant
First Claim
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1. A method for sensing a magnetic field, comprising:

  • (a) applying a direct-current voltage across a first layer of a conductive material wherein a direct current flows in a first direction;

    (b) positioning a second layer of a piezoelectric material adjacent the first layer and within the magnetic field;

    (c) generating a Lorentz force in a second direction generally perpendicular to the first direction to deflect the piezoelectric layer;

    (d) detecting a voltage output of the piezoelectric layer; and

    (e) calculating a magnetic flux density of the magnetic field as a function of the voltage output of the piezoelectric layer as caused by the Lorentz force.

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