International Currency Technologies Corporation

Institute of Occupational Safety and Health Council of Labor Affairs

Hung-Ta Chen

Tung-Sheng Shih

Yi-Ta Wu

Rong Fung Huang

Cheng-Ping Chang

Yu-Kang Chen

Chun-Wan Chen

A magnetic verification system for a bill acceptor includes a magnetic induction circuit, a signal amplifying and regulating circuit, and a magnetic field generating circuit. The signal amplifying and regulating circuit has a D/A converter, and the magnetic induction circuit has a magnetic device adapted for scanning the magnetic ink of the bill to be verified. The magnetic device is adapted to write a magnetic field reference value from the magnetic field generating circuit into the D/A converter, for enabling the D/A converter to adjust the intensity of light being emitted by a LED of the signal amplifying and regulating circuit onto a photoresistance of the signal amplifying and regulating circuit so as to cause the photoresistance to change the resistance thereof subject to the intensity of light from the LED, so that an operation amplifier at the output end of the magnetic induction circuit obtains the correct magnetic field signal value to verify the authenticity of the inserted bill.

Magnetic verification system for bill acceptor

The present invention is a fume hood capable of exhausting contaminant, having an air pipe in a sash and a suction slot corresponding to the air pipe deposed at the front rim of the bottom surface to obtain an air curtain, where contaminant is efficiently prevented from leakage and energy is saved.

Air-isolator fume hood

A paper currency recognition system used in a money exchange machine includes a LED type transmitter unit and a phototransistor type receiver unit controlled by a CPU. The receiver unit also includes an N-channel MOSFET. When a variation in the induction or signal current from the receiver unit is detected, the CPU controls the MOSFET to let a part of the induction current be shunt to the MOSFET, enabling the value of the induction current to be regulated to a readable range, and at the same time drives a control chip of the receiver unit to regulate the LED driving current, keeping the light intensity of the LED within a constant value.

Paper currency recognition system

Growing community of inventors

Taipei, Taiwan

Hung-Ta Chen