Apparatus and method for producing a magnetic image of a conduct

Details Apparatus and method for producing a magnetic image of a conduct Apparatus and method for producing a magnetic image of a conduct

1993-03-25

1997-07-15

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Magnetic recording medium on magnetized object records...

324262, G01R 3312, G01N 2782

Patent

active

056487207

ABSTRACT:
An apparatus and method for providing a fine line resistance image of a conductive pattern. A magnetic recording medium is placed in close proximity to the conductive pattern and a varying magnetic field is applied to the conductive pattern such that eddy currents in the conductive pattern are created. The eddy currents produce a magnetization pattern indicative of line resistance. The applied magnetic field is time varying and the varying magnetic field may be applied perpendicular to the recording medium or it may be applied in the plane of the recording medium.

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