G - Physics
07
D
324/37, 324/44
G07D 5/08 (2006.01) G07D 5/02 (2006.01)
Patent
CA 1320746
ABSTRACT OF THE DISCLOSURE A coin validator for discerning a thickness or a Pattern of a coin in a non-contact manner. When the coin passes through a coin path, a coin sensor senses the passage of the coin to cause a change in a resonant frequency of a resonator and hence to fluctuate a resonant output voltage. The thickness and pattern of the coin are detected in accordance with that fluctuation. The resonator has a variable capacitance diode added thereto as a resonant element. If the resonant frequency of the resonator deviates out of a reference resonant frequency range, a voltage corresponding to the deviation is applied across the variable capacitance diode to provide feedback control such that the resonant frequency returns within the reference resonant frequency range.
600221
Kabushiki Kaisha Nippon Conlux
Moffat & Co.
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