发明名称 |
Convergence unit for in-line color cathode ray tube |
摘要 |
A convergence unit for an in-line color cathode ray tube consists of four E-cores located around the neck of the CRT. Each E-core, preferably consisting of strip-shaped soft-magnetic material such as mumetal or permalloy, carries two coils connected so that the net magnetic field at the central beam is zero. The E-cores are arranged in paris with the resultant fields at the nearer electron beam due to each individual E-core being substantially orthogonal to one another.
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申请公布号 |
US4412194(A) |
申请公布日期 |
1983.10.25 |
申请号 |
US19820454399 |
申请日期 |
1982.12.29 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
CHASE, BRIAN D. |
分类号 |
H01J29/51;H01J29/70;H04N9/28;(IPC1-7):H01F7/00 |
主分类号 |
H01J29/51 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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