| 摘要 |
A horizontal dynamic focus regulation circuit, which induces a horizontal dynamic focus waveform voltage by a horizontal deflection circuit generating a different frequency according to a display mode of a display apparatus, comprising a microcomputer outputting a plurality of control signals; a plurality of switching parts corresponding to the plurality of control signals outputted from the microcomputer, respectively; a plurality of S-regulation capacitors connecting with the plurality of switching parts in series, respectively; an auxiliary capacitor provided on a line diverged from a line connecting each switching part with each S-regulation capacitor, and being respectively connected with the S-regulation capacitor in parallel and series according to switching on and off of the switching part. With this configuration, the dynamic focus regulation circuit supplies a uniform parabolic waveform voltage regardless of variation of a horizontal frequency in a display mode.
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