| 摘要 |
PURPOSE:To obtain a damper of a simple construction by providing one or more coils respectively wound up at (2m-1) times the opening angle of field magnet poles on sides of a gap in a magnetic yoke facing to the field magnet longitudinally magnetized. CONSTITUTION:A magnetic yoke 1 is constructed of a cylindrical body with a square section, and provided with a gap 2 longitudinally in its central part. Between two coils 3 and 4 set on the upper and the lower inside of the yoke 1, a field magnet 5 with (n) magnetic poles of N and S in the longitudinal direction is provided to be easily contained. Coils 3 and 4 are of a square frame wound up at (2m-1) times the opening angle of magnetic poles of the field magnet 5. |
