| 摘要 |
Provided are a cylindrical magnetic circuit which is able to prevent a deformation of a cylindrical yoke for holding two or more magnets without thickening the yoke more than required, and a producing method thereof. Provided are a cylindrical magnetic circuit 1 for generating a magnetic field in a space inside two or more magnets placed annularly, comprising: the two or more magnets 2 placed annularly; a cylindrical yoke 3 which is placed radially outside the magnets 2 and is fixed to the magnets directly or via an intermediate; and at least one nonmagnetic member 4 existing between two of the magnets circumferentially adjacent to each other, and a method for producing the cylindrical magnetic circuit 1. |
