| 摘要 |
PURPOSE:To facilitate assembling, manufacture, magnetization, and its correction, by using many small magnets, arranging them at one end of a magnetic circuit so that magnetic fluxes are directed in the uniform direction and a large surface is formed, thereby obtaining a magnetomotive force. CONSTITUTION:Magnet pieces 2 are stuck to the inner surface of a circular cylinder of a wound core made of silicon steel plate or a circular cylinder 1 made of ferrite so that all the magnetic fluxes are directed in the uniform direction. The magnet pieces 2 are arranged so that the gap between the magnet pieces is smaller than the height of the magnet piece. The distribution of the magnet pieces 2 is expressed by cos<2>theta. A magnetomotive force in the direction of Z axis is uniformly obtained along the considerable distance in the axial direction of the circular cylinder 1. |
