Counterfeit detection circuit
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United States of America Patent
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-
Oct 14, 1986
Grant Date -
N/A
app pub date -
Feb 11, 1985
filing date -
Feb 11, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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