Counterfeit detection circuit

Details Counterfeit detection circuit Counterfeit detection circuit

1985-02-11

1986-10-14

Pitts, Harold I.

Registers

Coded record sensors

Particular sensor structure

235493, 235451, G06K 708

Patent

active

046174583

ABSTRACT:
A magnetic detection circuit in which the sensor signal is integrated over the length of the examined sheet and compared with a pair of reference levels to establish the presence of too much or too little magnetizable material. The integration technique assures proper operation in spite of changes in feed rate.

REFERENCES:
patent: 4114804 (1978-09-01), Brosow

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