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Apparatus and method for inspecting wiring on board

  • US 6,459,272 B1
  • Filed: 05/22/2000
  • Issued: 10/01/2002
  • Est. Priority Date: 05/24/1999
  • Status: Expired due to Fees
First Claim
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1. A wiring inspection apparatus for inspecting wirings of a board, including first and second wirings, each of which has first and second ends, in a condition that both first ends of said first and second wirings are electrically coupled to each other, comprising:

  • magnetic field applying means for applying a magnetic field to said first and second wirings on the first ends side of said first and second wirings;

    magnetic field controlling means for supplying a signal to said magnetic field applying means so that the magnetic flux of the magnetic field changes with time;

    current detection means for detecting a current which flows between said first and second wirings as the magnetic flux changes with time; and

    defect judging means for judging whether said first and second wirings are defective based on a detection result which is obtained by said current detection means.

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