高電圧安定化回路

High-voltage stabilization circuit

Abstract

PROBLEM TO BE SOLVED: To improve an image bend in a white peak condition. SOLUTION: This high-voltage stabilization circuit, including a voltage resonance converter of a self-oscillating switching frequency controlled type, using an orthogonal control transformer on a primary side thereof and a voltage resonance circuit or a current resonance circuit on a secondary side thereof as a combined resonance converter, is structured so that a control signal, corresponding to a high DC voltage level and ripple voltage, is supplied to a control winding of the orthogonal control transformer and the inductance of an inductance winding (drive winding) is variably controlled. The control winding of the orthogonal control transformer is set, so that a magnetomotive force is maintained and the time constant is small, by winding a plurality of wires NC1, NC2, NC3 in a bundle manner. Thus, high-speed transient response characteristics can be improved.
(57)【要約】 【課題】 白ピーク時の画曲がりの改善。 【解決手段】 一次側が直交形制御トランスを用いた自 励発振形スイッチング周波数制御方式電圧共振形コンバ ータ、二次側が電圧共振回路或いは電流共振回路を備え た複合共振形コンバータとしての高圧安定化回路におい て、直流高電圧のレベル及びリップル電圧に応じた制御 信号を直交形トランスの制御巻線に供給して、インダク タンス巻線(駆動巻線)のインダクタンスを可変制御す る構成を採ると共に、直交形制御トランスの制御巻線は 複数の線材NC1,NC2,NC3を束ねて巻装することで、起磁 力を維持したまま時定数を小さくしている。これにより 高速過渡応答特性を改善する。

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