JPS58398U

JPS58398U - lighting circuit

Info

Publication number: JPS58398U
Application number: JP9395581U
Authority: JP
Inventors: 博山本
Original assignee: 日本電気株式会社
Priority date: 1981-06-25
Filing date: 1981-06-25
Publication date: 1983-01-05

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、第２図は従来の点灯回路を示す回路図、第３
図は本考案の一実施例を示す回路図である。なお、図において、１・・・商用交流電源、２・・・案
定器、３・・・螢光放電管、４・・・開閉器、５・・・
点灯管、６・・・非直線性誘電体素子、７．　９．　１
５・・・整流ダイオード、８．　１７．　１８．　１９
．　２０・・・抵抗、１０・・・ＰＮＰＮスイッチ、１
１・・・Ｐゲートサイリスタ、１２．　１４−）リガ素
子、１６・・・コンデンサ、−である。- Figures 1 and 2 are circuit diagrams showing conventional lighting circuits, and Figure 3 is a circuit diagram showing a conventional lighting circuit.
The figure is a circuit diagram showing an embodiment of the present invention. In addition, in the figure, 1... Commercial AC power supply, 2... Adjuster, 3... Fluorescent discharge tube, 4... Switch, 5...
Lighting tube, 6... nonlinear dielectric element, 7. 9. 1
5... Rectifier diode, 8. 17. 18. 19
．． 20...Resistor, 10...PNPN switch, 1
1...P gate thyristor, 12. 14-) Riga element, 16... capacitor, -.

Claims

[Scope of utility model registration request]

When a fluorescent discharge tube connected to an AC power source through a ballast is not lit, a unidirectional switching element that conducts and causes a current to flow through the filament of the fluorescent discharge tube; 1. A lighting circuit comprising a circuit that generates a high voltage depending on the polarity of an alternating current power supply to which is applied, the switching element becoming non-conductive after a set time.