JPS5920758U

JPS5920758U - Horizontal dynamic focus circuit

Info

Publication number: JPS5920758U
Application number: JP11280982U
Authority: JP
Inventors: 清高橋
Original assignee: 株式会社東芝
Priority date: 1982-07-27
Filing date: 1982-07-27
Publication date: 1984-02-08

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図はダイナミック・ホーカス補正に必要な波形を示
す波形図、第２図は本考案に係る水平ダイナミック・ホ
ーカス回路の一実施例を示す回路図、第３図は第２図に
示す回路の各点の電圧波形゛のタイミングを示す波形図
である。１・・・電源端子、２・・・整形回路、３．５・・・積
分回路、Ｑｔ、　Ｑ２−・・トランジスタ、Ｄ・・・ダ
イオード、Ｌ・・・コイル、Ｃ・・・コンデンサ、Ｒ１
〜Ｒ３・・・抵抗、ａ・・・帰線パルス、ｂ・・・共振
パルス、Ｃ・・・矩形波信号、ｄ、　　ｅ・・・鋸歯状
波信号、ｆ・・・パラボラ波信号。Fig. 1 is a waveform diagram showing waveforms necessary for dynamic focus correction, Fig. 2 is a circuit diagram showing an embodiment of the horizontal dynamic focus circuit according to the present invention, and Fig. 3 is a circuit diagram of the circuit shown in Fig. 2. FIG. 3 is a waveform diagram showing the timing of the voltage waveform at each point. 1... Power supply terminal, 2... Shaping circuit, 3.5... Integrating circuit, Qt, Q2-... Transistor, D... Diode, L... Coil, C... Capacitor, R1
~R3...resistance, a...return pulse, b...resonance pulse, C...square wave signal, d, e...sawtooth wave signal, f...parabolic wave signal.

Claims

[Scope of utility model registration request]

(1) A transistor that switches using the synchronized pulses obtained from the horizontal deflection circuit, a resonant circuit that is connected to the output side of this transistor and is equipped with a damper diode, and consists of a coil and a capacitor, and the pulses obtained by this resonant circuit are converted into a rectangular wave. a first integrating circuit that integrates the rectangular wave signal obtained by this shaping circuit to create a sawtooth wave signal; and a first integrating circuit that integrates the sawtooth wave signal obtained by this integrating circuit to create a parabolic wave signal. a second integrating circuit for creating a horizontal dynamic focus circuit, the horizontal dynamic focus circuit using the sawtooth wave signal and the parabolic wave signal as signals for performing dynamic focus correction of a picture tube.

(2) A utility model according to claim 1, characterized in that the pulse width and phase of the resonance pulse obtained in the resonance circuit are set to predetermined values by setting the constants of the coil and the capacitor. Horizontal dynamic focus circuit.