FIELD: bank systems for verification of bank notes and securities. SUBSTANCE: device has rectangular pulse generator, which is connected to inductance coil of signal detector and resistor. Common point between inductance coil and resistor is connected to second input of comparator through serial circuit of amplitude detector, high-pass filter and scaling amplifier. EFFECT: increased validity of verification, simplified design, simplified process of verification, decreased labor cost of operation. 8 dwg
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RU2060553C1 |
