| 摘要 |
PURPOSE:To generate stable driving force by detecting the pole of a corresponding magnet by a Hall element and conducting a coil. CONSTITUTION:A coil (a) is wound on a section A in a core 1 for an armature and a coil (b) on a section B respectively, and a magnet 2 in which N poles and S poles are arranged alternately in succession at proper same intervals from the lower end of the section A and the lower end of the section B is fitted onto a rail 3. Hall elements 5, 6 are mounted at proper intervals from the magnet 2 on the magnet 2 side of a non-magnet substance 4 disposed between the section A and section B of the core 1. The corresponding magnet 2 detects the N poles or the S poles by the Hall element 5 or the Hall element 6, and currents are made to flow through the coil (a) or the coil (b) through a drive circuit from an AC power supply by the detecting signals. |
