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Manner and the color - display storage tube system null amendment the gap of konba - zensu of electronic bi - mu in the color - display storage tube
Manner and the color - display storage tube system null amendment the gap of konba - zensu of electronic bi - mu in the color - display storage tube
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机译:方式和彩显存储管系统无效修正了彩色显存管中电子双亩的konba-zensu间隙。
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摘要
A method of post deflection correction of dynamic electron beam misconvergence in a colour display tube, the method comprising providing at least one permanently magnetisable substantially annular element (34, 36) externally of the tube envelope on screen side of the plane (28) of deflection of the deflection yoke (26), measuring the convergence errors at the screen (22) and permanently magnetising the or each element (34, 36) as a multipole to correct for the measured errors. The annular element or elements (34, 36) may be mounted directly on the tube envelope. Alternatively a single annular element may be secured to the deflection yoke (26).
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