JPS59195870U

JPS59195870U - Display device power supply circuit

Info

Publication number: JPS59195870U
Application number: JP1983090510U
Authority: JP
Inventors: 大野　和寛
Original assignee: Individual
Current assignee: Individual
Priority date: 1983-06-15
Filing date: 1983-06-15
Publication date: 1984-12-26

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図及び第２図は従来の電源回路を示す回路図、第３
図は本考案の一実施例に係る電源回路の回路を示す回路
図、第４図は第３図の動作を説明するための動作波形図
、第５図は本考案の他の実施例に係る電源回路の回路を
示す回路図である。１・・・水平駆動回路、２・・・水平駆動トランス、３
・・・水平出力回路、４・・・フライバックトランス、
Ｑ□・・・水平駆動トランジスタ、Ｑ２・・・水平出力
トランジスタ、Ｄ２．Ｄ、・・・ダイオード、Ｃ２，Ｃ
６・・・コンデンサ、Ｒ２・・・抵抗。Figures 1 and 2 are circuit diagrams showing conventional power supply circuits;
The figure is a circuit diagram showing a power supply circuit according to one embodiment of the present invention, FIG. 4 is an operation waveform diagram for explaining the operation of FIG. 3, and FIG. 5 is a diagram showing another embodiment of the present invention. FIG. 2 is a circuit diagram showing a circuit of a power supply circuit. 1... Horizontal drive circuit, 2... Horizontal drive transformer, 3
...Horizontal output circuit, 4...Flyback transformer,
Q□...Horizontal drive transistor, Q2...Horizontal output transistor, D2. D,...diode, C2,C
6...Capacitor, R2...Resistor.

Claims

[Scope of utility model registration request]

The electromagnetic energy transmitted from the primary winding to the secondary winding of the horizontal drive transformer in accordance with the switching operation of the horizontal drive active element is derived as a drive current of the horizontal output active element,
A power supply circuit for a display device in which a power supply voltage based on an external voltage supplied to a tap point of a primary winding of a flyback transformer is supplied to the horizontal output active element from one end of the primary winding of the flyback transformer. A power supply circuit for a display device, characterized in that the power supply voltage of the horizontal drive active element is supplied to the primary winding of the horizontal drive transformer from the other end of the primary winding of the flyback transformer.