| 摘要 |
<p>An apparatus for detecting objects such as coins and the like and for generating signal responses that depend on the metal content or other characteristics of the object or coin, which apparatus includes a detector circuit including an oscillator device having a coil portion for producing a frequency change due to the presence of an object or coin in the field thereof, said detector circuit producing output responses to represent the presence of objects or coins having certain preselected characteristics, and other control circuits including a circuit portion responsive to the output responses of said detector circuit for inhibiting the operation of such control circuits. The present device may also include a coin handling apparatus which prevents return to a customer of an object or coin that has characteristics that are not acceptable for vending, change making, or other functions.</p> |
