| 摘要 |
<p>A coin acceptor or rejector includes a coin chute having an acceptance portion, a rejection portion, and a flapper controlling the direction of movement of the coins to one of the portions. A sensing coil surrounds the chute at its coin-receiving end, so as to have its Q substantially decreased and to create energy losses caused by eddy currents being dissipated by a coin and by the magnetic hysterisis of the coin. The coil is in an oscillator circuit so that, in response to sensing of a coin, the effective resistance of the oscillator is reduced and current flow is increased.</p> |
