JPS58154594U

JPS58154594U - Discharge lamp lighting circuit

Info

Publication number: JPS58154594U
Application number: JP5151782U
Authority: JP
Inventors: 安波　逸男; 水内　重信; 大日向　亨; 昭一岩谷
Original assignee: ティーディーケイ株式会社
Priority date: 1982-04-09
Filing date: 1982-04-09
Publication date: 1983-10-15
Also published as: JPH017999Y2

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図は従来の放電灯点灯回路の電気回路接続図、第２
図は非直線性コンデンサの印加電圧−蓄積電荷特性図、
第３図は本考案に係る放電灯点灯回路の電気回路図、第
４図は同じくぞの電流波形を示す図、第５図は別の実施
例における電気回路　図、第６図は第５図の実施例にお
ける電流波形を示す図である。１・・・・・・放電灯、２・・・・・・安定器、Ｃｎ・
・・・・・非直線性コンデンサ、Ｑｌ・・・・・・半導
体スイッチ、Ｄｌ・・・・・・ダイオード、Ｒ５・・・
・・・可変インピーダンス素子。Figure 1 is an electric circuit connection diagram of a conventional discharge lamp lighting circuit, Figure 2
The figure shows the applied voltage vs. accumulated charge characteristic diagram of a nonlinear capacitor.
Fig. 3 is an electric circuit diagram of a discharge lamp lighting circuit according to the present invention, Fig. 4 is a diagram showing the same current waveform, Fig. 5 is an electric circuit diagram of another embodiment, and Fig. 6 is a diagram showing the same current waveform. It is a figure which shows the current waveform in Example. 1... Discharge lamp, 2... Ballast, Cn.
...Nonlinear capacitor, Ql...Semiconductor switch, Dl...Diode, R5...
...Variable impedance element.

Claims

[Scope of utility model registration request]

(1) a discharge lamp, an inductive ballast connected in series with the discharge lamp, a non-linear capacitor connected in parallel with the discharge lamp and in series with the inductive ballast, and the ballast and In a discharge lamp lighting circuit comprising a semiconductor switch that forms a series loop with the discharge lamp and is connected in parallel to the nonlinear capacitor, the semiconductor switch has a variable impedance that varies its own impedance by self-heating. A discharge lamp lighting circuit, characterized in that the variable impedance element is connected to a discharge lamp lighting circuit, and the voltage applied to the nonlinear capacitor is controlled by the variable impedance element.

(2) Utility model registration claim 1, characterized in that the variable impedance element is a positive temperature coefficient thermistor.
The discharge lamp lighting circuit described in .

(3) The discharge lamp lighting circuit according to claim 1 or 2, wherein the variable impedance element is connected in parallel with the semiconductor switch.

(4) The semiconductor switch is constituted by a three-terminal controlled rectifier, and the variable impedance element is connected to a gate circuit of the three-terminal controlled rectifier. The discharge lamp lighting circuit according to item 2.