JPH0320573U

JPH0320573U -

Info

Publication number: JPH0320573U
Application number: JP8109089U
Authority: JP
Priority date: 1989-07-10
Filing date: 1989-07-10
Publication date: 1991-02-28

Description

[Brief explanation of drawings]

第１図は本考案の第１実施例のブロツク図、第
２図は本考案の実施例に用いる補正コイルのイン
ダクタンス特性図、第３図は本考案の実施例に用
いる補正コイルの一次側に加えられる電流を示す
図、第４図は本考案の第２実施例のブロツク図、
第５図は第２実施例のピツクアツプトランスの誘
起電圧を示す図、第６図は直線性のよい鋸波電流
の波形ＳＷと、ひずんだ波形Ｋと、逆補正用の波
形Ｈとを示す図、第７図は従来の鋸波電流補正回
路の電気回路図、第８図は従来の補正コイルの電
流−インダクタンス特性を示す図、第９図は従来
のマルチスキヤン等の場合の鋸波電流補正回路の
電気回路図である。１……補正コイル、２……電流増幅器、３……
周波数／電圧変換器、１０，１０Ａ……インダク
タンス決定手段、１１……ピツクアツプトランス
、１２……エラー対応電圧発生部、２０……リニ
イアリテイエラー検出手段、５１……水平出力ト
ランジスタ、５３……共振コンデンサ、５５……
偏向コイル、５６……Ｓ字補正コンデンサ。 Fig. 1 is a block diagram of the first embodiment of the invention, Fig. 2 is an inductance characteristic diagram of the correction coil used in the embodiment of the invention, and Fig. 3 is a diagram of the primary side of the correction coil used in the embodiment of the invention. FIG. 4 is a block diagram of the second embodiment of the present invention;
FIG. 5 is a diagram showing the induced voltage of the pick-up transformer of the second embodiment, and FIG. 6 is a diagram showing the sawtooth current waveform SW with good linearity, the distorted waveform K, and the waveform H for reverse correction. , Fig. 7 is an electrical circuit diagram of a conventional sawtooth current correction circuit, Fig. 8 is a diagram showing the current-inductance characteristics of a conventional correction coil, and Fig. 9 is a sawtooth current correction in the case of conventional multi-scan etc. FIG. 2 is an electrical diagram of the circuit. 1... Correction coil, 2... Current amplifier, 3...
Frequency/voltage converter, 10, 10A...inductance determining means, 11... pick-up transformer, 12... error handling voltage generating section, 20... linearity error detection means, 51... horizontal output transistor, 53... Resonance capacitor, 55...
Deflection coil, 56...S-shaped correction capacitor.

Claims

[Claims for Utility Model Registration] 1. Applying a DC voltage to a circuit in which a deflection coil, an S-shaped correction capacitor, and a correction coil are connected in series to cause a sawtooth current to flow through the deflection coil, and to cause a sawtooth current to flow in a straight line. A sawtooth current correction circuit for inversely correcting distortion related to polarity by controlling the inductance of the correction coil, comprising: a secondary coil inserted in series in a series circuit of the deflection coil and the S-shaped correction capacitor; and a control current. 1. A sawtooth current correction circuit comprising: a primary coil that is given the following: and a correction coil in which the secondary coil has an inductance that changes depending on the control current of the primary coil. 2. The sawtooth current correction circuit according to claim 1, wherein the control current has a current value corresponding to a distortion related to linearity of a current waveform flowing through the deflection coil.