| 摘要 |
<p>A coin selector comprises a first receiving coil (40A) and a first exciting coil (41A) disposed along one side of a coin path (3), a second receiving coil (40B) and a second exciting coil (41B) disposed along the other side of the coin path (3) facing the first receiving coil (40A) and the first exciting coil (41A), and drive means (23) for exciting and driving the first and second exciting coils (41A, 41B). A magnetic field developed by the first exciting coil (41A) acts on the first and second receiving coils (40A, 40B) and a magnetic field developed by the second exciting coil (41B) acts on the second and first receiving coils (40B, 40A). The coin selector further comprises judging means (25). When a coin is put into and passes through the coin path (3), the magnetic fields of the first and second receiving coils (40A, 40B) and consequence the output voltages of these coils change. The judging means (25) judges the coin passing through the coin path (3) on the basis of the sum of the output signals of the first and second receiving coils (40A, 40B).</p> |
