| 摘要 |
PROBLEM TO BE SOLVED: To solve problems of causing a phase difference between electric currents i1 and i2 flowing in auxiliary coils L1 and L2 in the image screen upper end since a return frequency of vertical deflection of a color cathode-ray tube becomes a high frequency, and causing the so-called blade-shaped miss convergence when miss convergence of R and B becomes remarkably large on the image screen upper end as a drawing 14 as the result. SOLUTION: An increase balance of impedance between the auxiliary coils L1 and L2 on the image screen upper end is kept by adding an inductor L3 to a conventional correction mechanism 1, the phase difference in the electric currents i1 and i2 between the auxiliary coils L1 and L2 is corrected, and the blade-shaped miss convergence in the image screen upper end is eliminated.
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