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Contactless, transformer-based measurement of the resistivity of materials

  • US 6,639,401 B2
  • Filed: 07/19/2001
  • Issued: 10/28/2003
  • Est. Priority Date: 07/19/2001
  • Status: Active Grant
First Claim
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1. Apparatus for measuring the resistivity of a sample of material, comprising:

  • a transformer formed with a primary coil, a secondary formed by a sample of said material that is inductively coupled to said primary coil, means for supplying a voltage to said primary, means for measuring the voltage induced in said sample, and means for measuring the current induced in said sample.

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