JPH0435400U - - Google Patents
Info
- Publication number
- JPH0435400U JPH0435400U JP7686790U JP7686790U JPH0435400U JP H0435400 U JPH0435400 U JP H0435400U JP 7686790 U JP7686790 U JP 7686790U JP 7686790 U JP7686790 U JP 7686790U JP H0435400 U JPH0435400 U JP H0435400U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- discharge lamp
- series
- preheating
- converters
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims 5
- 238000006243 chemical reaction Methods 0.000 claims 2
- 238000009499 grossing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例を示す回路構成図、
第２図は従来例を示す回路構成図である。
１１……直流電源、１２１〜１２ｎ，１３１〜
１３３……直流−直流コンバータ、１４……放電
灯、１４ａ，１４ｂ……フイラメント電極、１５
……制御回路、２６……出力コンデンサ。
FIG. 1 is a circuit diagram showing an embodiment of the present invention;
FIG. 2 is a circuit configuration diagram showing a conventional example. 11...DC power supply, 12 1 ~ 12n, 13 1 ~
13 3 ...DC-DC converter, 14...Discharge lamp, 14a, 14b...Filament electrode, 15
...Control circuit, 26...Output capacitor.
Claims (1)
御する放電灯点灯装置において、コンデンサとト
ランスの１次巻線からなる共振回路及びこの共振
回路を動作させる共振スイツチを有する直流−交
流変換回路と前記トランスの２次巻線に整流素子
を介して平滑機能を有する出力コンデンサを並列
的に接続した交流−直流変換回路とで構成される
複数の直流−直流コンバータと、この各コンバー
タの出力コンデンサを直列に接続し、その直列回
路の両端間に前記放電灯のフイラメント電極の各
端子を接続して形成される予熱回路と、始動時に
対して放電灯点灯後のコンバータの動作数を減少
制御する制御手段を設けたことを特徴とする放電
灯点灯装置。 (2) コンデンサとトランスの１次巻線からなる
共振回路及びこの共振回路を動作させる共振スイ
ツチを有する直流−交流変換回路と前記トランス
の１次巻線に対して電気的に絶縁されたトランス
の２次巻線に整流素子を介して出力コンデンサを
並列的に接続した交流−直流変換回路とで構成さ
れる複数の点灯用直流−直流コンバータ並びに複
数の予熱用直流−直流コンバータと、前記各点灯
用コンバータの出力コンデンサを直列に接続した
第１の直列回路と、前記各予熱用コンバータの出
力コンデンサを直列に接続した第２の直列回路と
、前記第１の直列回路の両端間に各フイラメント
電極がそれぞれ接続された放電灯と、前記第２の
直列回路の両端間に前記放電灯のフイラメント電
極の各端子を接続して形成される予熱回路と、始
動時に対して放電灯点灯後の前記各予熱用コンバ
ータの動作数を減少制御する制御手段を設けたこ
とを特徴とする放電灯点灯装置。[Claims for Utility Model Registration] (1) A discharge lamp lighting device for controlling the lighting of a discharge lamp having a filament electrode, comprising a resonant circuit consisting of a primary winding of a capacitor and a transformer, and a resonant switch for operating this resonant circuit. A plurality of DC-DC converters each comprising a DC-DC converter circuit and an AC-DC converter circuit in which an output capacitor having a smoothing function is connected in parallel to the secondary winding of the transformer via a rectifying element; A preheating circuit is formed by connecting the output capacitors of each converter in series and connecting each terminal of the filament electrode of the discharge lamp between both ends of the series circuit, and the operation of the converter after the discharge lamp is turned on compared to when starting. A discharge lamp lighting device characterized in that it is provided with a control means for controlling the number of discharge lamps to decrease. (2) A resonant circuit consisting of a capacitor and the primary winding of a transformer, a DC-AC conversion circuit having a resonant switch for operating this resonant circuit, and a transformer electrically insulated from the primary winding of the transformer. A plurality of lighting DC-DC converters and a plurality of preheating DC-DC converters each comprising an AC-DC conversion circuit in which an output capacitor is connected in parallel to a secondary winding via a rectifying element, and each of the above-mentioned lighting a first series circuit in which the output capacitors of the converters for preheating are connected in series, a second series circuit in which the output capacitors of the converters for preheating are connected in series, and each filament electrode is connected between both ends of the first series circuit. a preheating circuit formed by connecting each terminal of the filament electrode of the discharge lamp between both ends of the second series circuit; A discharge lamp lighting device comprising a control means for reducing the number of operations of a preheating converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7686790U JPH0435400U (en) | 1990-07-19 | 1990-07-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7686790U JPH0435400U (en) | 1990-07-19 | 1990-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0435400U true JPH0435400U (en) | 1992-03-24 |
Family
ID=31618721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7686790U Pending JPH0435400U (en) | 1990-07-19 | 1990-07-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0435400U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012168983A1 (en) * | 2011-06-10 | 2012-12-13 | 三菱電機株式会社 | Charging device |
-
1990
- 1990-07-19 JP JP7686790U patent/JPH0435400U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012168983A1 (en) * | 2011-06-10 | 2012-12-13 | 三菱電機株式会社 | Charging device |
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