| 摘要 |
A horizontal deflection circuit drives a load such as an ultor voltage generator which is subject to load variations. Raster distortion is corrected by a switched pincushion correction circuit. Further raster distortion due to load-dependent retrace time modulation is corrected by a corrective circuit which includes a retrace duration sensing circuit for generating a control signal representative of the horizontal retrace pulse duration. The control signal is coupled to the pincushion correction circuit so that it acts additionally in a manner to compensate the load-dependent raster size variations.
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