| 摘要 |
<p>A coin discriminating device is disclosed which includes a circuit which is provided with a coin sensor and a condensor connected to the coin sensor in parallel. The circuit is disposed adjacent to a passageway to move coins along a certain direction. A direct voltage source is connected to both ends of the circuit to supply electric current through a switching element. A first response circuit is connected between the circuit and a switching element to respond to a characteristic of a waveform of damped oscillatin which occurs on the circuit when the switching element is turned off. A passage detecting circuit is disposed adjacent to the circuit to detect presence and absence of passage of the coins in the passageway. A second response circuit turns of the switching element in response to an output signal from the passage detecting. Therefore, the kind of coins, and truth and counterfeit of coins can be discriminated with no contact.</p> |
