JPS5477475A - Discharge lamp lighting apparatus - Google Patents
Discharge lamp lighting apparatusInfo
- Publication number
- JPS5477475A JPS5477475A JP14537277A JP14537277A JPS5477475A JP S5477475 A JPS5477475 A JP S5477475A JP 14537277 A JP14537277 A JP 14537277A JP 14537277 A JP14537277 A JP 14537277A JP S5477475 A JPS5477475 A JP S5477475A
- Authority
- JP
- Japan
- Prior art keywords
- discharge lamp
- inductance element
- power source
- circuit
- same
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
PURPOSE:To provide a discharge lamp lighting apparatus, in which re-striking voltage of arc caused at the initial stage of each half cycle of AC power source is lowered by connecting a series circuit of an inductance element and a capacitance element to another inductance element in main circuit in parallel to the same, whereby it is enabled to prevent spontaneous extinguishing of the discharge lamp. CONSTITUTION:Discharge lamp 5 is lighted by connecting the same to power source 4 and effecting phase-control of thyristor 6. Lamp current in the above circuit is larger than that in the conventional circuit in which an inductance element is connected to a thyristor in series with the same, by an amount produced by LC-oscillation of the above inductance element 2 and capacitance element 3. Resultantly, current at the initial starting stage of each cycle of power source 4 is increased, so that its peak voltage functioning as re-striking voltage of arc is lowered as compared with that in the conventional arrangement.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14537277A JPS5477475A (en) | 1977-11-30 | 1977-11-30 | Discharge lamp lighting apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14537277A JPS5477475A (en) | 1977-11-30 | 1977-11-30 | Discharge lamp lighting apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5477475A true JPS5477475A (en) | 1979-06-20 |
JPS6112360B2 JPS6112360B2 (en) | 1986-04-08 |
Family
ID=15383689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14537277A Granted JPS5477475A (en) | 1977-11-30 | 1977-11-30 | Discharge lamp lighting apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5477475A (en) |
-
1977
- 1977-11-30 JP JP14537277A patent/JPS5477475A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6112360B2 (en) | 1986-04-08 |
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