| 摘要 |
PROBLEM TO BE SOLVED: To obtain a mis-convergence correction circuit with a simple structure where intermediate horizontal pincushion distortion can be corrected in addition to lateral mis-convergence at screen corners. SOLUTION: A 1st saturable reactor 11 with coils L1, L2 to which a fixed bias magnetic field is supplied and a 2nd saturable reactor 12 with coils L3, L4 to which a coil L5 applies a variable bias magnetic field in response to a vertical deflection current are connected in parallel, a bridge circuit 24 consisting of coils L6-L9 is connected between circuit output terminals O, P of a bridge circuit 23, and convergence correction coils Lc1-Lc4 are connected between circuit output terminals Q, R of the bridge circuit 24. Then a horizontal deflection current consisting of a sawtooth wave is supplied between input terminals S, T of the bridge circuit 23 consisting of the coils L1-L4 through horizontal deflection coils L12, L13.
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