发明名称 MANUFACTURE OF AUXILIARY COIL FOR COMA ABERRATION CORRECTION
摘要 PROBLEM TO BE SOLVED: To improve manufacturing workability and enhance productivity. SOLUTION: A wire 1 is wound around from first end to an intermediate portion of the central side of a U-shaped core 4, the tap 3 of the wire is extracted from the intermediate portion, and a wire 2 is wound around from the intermediate portion to second end, thereafter, the wire is cut at the tap 3. The portion from the first end to the intermediate portion is assigned to first coil (a) and conducts a coma correction operation for the whole screen. The portion from the intermediate portion to the second end is assigned to second coil (b) and conducts a coma correction operation for the upper area or the lower area of the screen. Thereby, a cost can be reduced.
申请公布号 JPH1074470(A) 申请公布日期 1998.03.17
申请号 JP19970240590 申请日期 1997.09.05
申请人 TOTOKU ELECTRIC CO LTD 发明人 TAKEDA SEIJI
分类号 H01J29/76;H01F41/06 主分类号 H01J29/76
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