无内屏蔽彩管的地磁兼容性研究  

Investigation of the Geomagnetic Compatibility for the CPT without Shield

作　　者：费民权 

机构地区：[1]彩虹集团公司技术中心,陕西咸阳712021

出　　处：《真空电子技术》2004年第5期66-70,共5页Vacuum Electronics

摘　　要：地球存在着地磁场,地磁场对彩色显像管(CPT)的色纯度影响很大。为了减小地磁场对CPT色纯度的影响,通常在CPT内部装有磁屏蔽组件(简称为内屏蔽)。本文介绍一种无内屏蔽组件的CPT,它既降低了CPT的成本,又不影响CPT的品位,还能满足全球地磁场的兼容性。The geomagnetic-fields on the earth have great influence on the color pure of CPT. Generally, the magnetism shield assembled in CPT can eliminate the influence of geomagnetic-filed for the color pure of CPT. In this paper we introduce a CPT without shield, which can both reduce cost and keep in high quality. Yet it is capable of satisfy the compatibility of global geomagnetic-field.

关 键 词：地磁场 彩色显像管 内屏蔽 兼容性 校正透镜 着屏 电子束 

分 类 号：TN141.31[电子电信—物理电子学]