JPS59161186U

JPS59161186U - Fluorescent display tube lighting circuit

Info

Publication number: JPS59161186U
Application number: JP5658083U
Authority: JP
Inventors: 進鈴木; 栗林　泰治; 木村　雅英; 充昭太田
Original assignee: 日本ビクター株式会社
Priority date: 1983-04-15
Filing date: 1983-04-15
Publication date: 1984-10-29
Also published as: JPH0125984Y2

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Ａ、　Ｂは夫々従来回路の一例の概略図及びその
アノード、フィラメントの各位置と電位との関係を示す
図、第２図Ａ、　Ｂは夫々本考案回路の一実施例の概略
図及びそのアノード、フィラメントの各位置と電位との
関係を示す図である。１・・・螢光表示管、２ａ、　２ｂ・・・駆動回路、４
・・・　。フィラメント電圧印加用トランス、Ａ１〜Ａ７・・・ア
ノード、Ｆ・・・フィラメント、Ｔ・・・フィラメント
バイアス給電点、Ｒ・・・抵抗。FIGS. 1A and 1B are schematic diagrams of an example of a conventional circuit and diagrams showing the relationship between the positions of the anode and filament and the potentials, and FIGS. 2A and B are schematic diagrams of an example of the circuit of the present invention, respectively. FIG. 4 is a diagram showing the relationship between the positions of the anode and filament and the potential. 1... Fluorescent display tube, 2a, 2b... Drive circuit, 4
.... Transformer for applying filament voltage, A1 to A7...Anode, F...Filament, T...Filament bias feeding point, R...Resistance.

Claims

[Scope of utility model registration request]

Electrons from the filament to which voltages of different frequencies are applied as the grid applied voltage or the anode applied voltage, respectively, and which have a force 9-d, reach the anode selected by the grid applied voltage or the anode applied voltage, and the fireflies provided at the anode. In a fluorescent display tube lighting circuit comprising a fluorescent display tube in which a light body emits light, and a transformer that applies an alternating current voltage of a predetermined frequency between both terminals of a filament serving as a cathode of the fluorescent display tube, one of the anodes , the winding of the transformer such that the voltage of the filament portion facing the anode selectively applied by the grid applied voltage or the anode applied voltage having a frequency close to the frequency of the transformer is smaller than the voltage of other filament portions. Fluorescent display tube lighting circuit where the end of the filament serves as the filament bias feeding point.