Apparatus for detecting counterfeit currency using two coils to

Details Apparatus for detecting counterfeit currency using two coils to Apparatus for detecting counterfeit currency using two coils to

1986-09-12

1988-08-16

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324228, 235449, 209567, G01N 2772, G01R 3312, G06K 706, B07C 5342

Patent

active

047647256

ABSTRACT:
Counterfeit detection apparatus in which the coils of the magnetic head are utilized to produce a saturating current for the paper currency being examined which is sufficient to bring the magnetic ink printed upon the paper currency close to the saturation point to greatly facilitate the detection operation.

REFERENCES:
patent: 3223988 (1965-12-01), Danko

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