| 摘要 |
PURPOSE:To restrict the ringing, by reducing the combining capacity of a deflecting coil and a ferrite core extensively. CONSTITUTION:At the surface of a ferrite core for a deflection yoke, an electroconductive membrane 4 is formed, over which a spacer of an insulating coating 5, a plastic mesh, or the like is formed, and further on them, horizontal and/or vertical deflecting coils 2 and 3 are furnished. Since the conductive membrane 4 shields up the dielectric property of the ferrite core 1, the capacity is only of the surface side. Therefore, as far as the insulating coating and the like is not too large, the capacity formed in the core is prevented even though the ferrite core 1 is made of a highly dielectric constant material such as Mn-Zn type with a low resistance (10<2>OMEGA-cm or more), and the ringing can be restricted.
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