| 摘要 |
PURPOSE:To facilitate production and increase output, by fixing a gear-shaped magnet on a magnetic unit rotor and by providing a generating coil confronting the tooth section of the gear-shaped magnet. CONSTITUTION:A gear-shaped magnet 21 is fixed on a magnetic unit rotor 10. A plurality of tooth sections which are concentric with a rotary shaft 1 and are protruded in the rotating radial direction, are provided for the gear- shaped magnet 21, and each tooth section is magnetized in the axial direction of the rotary shaft 1. A generating coil 7 formed in a rectangular-corrugated shape concentric to the rotary shaft 1 and at a specified pitch confronts the gear-shaped magnet 21 with a specified space, and the density variation of magnetic flux produced by the tooth sections of the gear-shaped magnet 21 is converted to voltage. |
