JPS60136569U

JPS60136569U - High pressure generation circuit

Info

Publication number: JPS60136569U
Application number: JP2315984U
Authority: JP
Inventors: 磯野　治夫; 梅津　豊
Original assignee: 三洋電機株式会社
Priority date: 1984-02-20
Filing date: 1984-02-20
Publication date: 1985-09-10

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 the drawing]

第１図は従来の高圧発生回路の結線図、第２図以下の図
面はこの考案の高圧発生回路の１実施例を示し、第２図
は結線図、第３図ａ　”　ｄは第２図の動作説明用の波
形図である。０８〜Ｃ１５・・・コンデンサ、Ｄ６〜ＤＩＯ・・・ダ
イオード、Ｇ・・・水平発振回路、Ｑ３．Ｑ４・・・ト
ランジスタ、Ｒ８−Ｒ１２・・・抵抗、Ｓ・・・波形整
形口５路、Ｔ２・・・高圧トランス、Ｚ２・・・ツェナ
ダイオード、ｌａ、　ｌｂ、　１ｃ−１次、２次、３次
巻線。Figure 1 is a wiring diagram of a conventional high voltage generation circuit, Figure 2 and the following drawings show an embodiment of the high voltage generation circuit of this invention, Figure 2 is a wiring diagram, and Figures 3a and 3d are Figures 2 and 3. It is a waveform diagram for explaining the operation.08-C15...Capacitor, D6-DIO...Diode, G...Horizontal oscillation circuit, Q3.Q4...Transistor, R8-R12...Resistor, S: 5 waveform shaping ports, T2: High voltage transformer, Z2: Zener diode, LA, LB, 1C - primary, secondary, and tertiary windings.

Claims

[Scope of utility model registration request]

In the high voltage generation circuit that supplies high voltage direct current to the cathode ray tube,
a switching control signal forming unit that forms a switching control signal synchronized with the horizontal synchronizing signal, in which a positive half-wave period and a negative half-wave period are equal from a horizontal synchronizing signal for scanning control of the cathode ray tube; A transistor switches in synchronization with the horizontal synchronization signal upon input of a control signal, and the switching of the transistor supplies input AC to the primary winding, generates high voltage output AC in the secondary winding, and generates high voltage output AC in the tertiary winding. A high-voltage transformer in which low-voltage feedback AC is generated and the primary winding form a resonant circuit having a frequency approximately equal to that of the horizontal synchronizing signal, and the switching of the transistor draws the resonant frequency to the frequency of the horizontal synchronizing signal, and the input AC a capacitor that controls the frequency of the horizontal synchronization signal to the frequency of the horizontal synchronization signal; a high voltage direct current converter that rectifies the high voltage output AC to output the high voltage DC; and a bias control signal that is formed by rectifying the low voltage feedback AC; a bias control signal forming section that variably controls the bias of the transistor using a bias control signal to stabilize the high voltage direct current.