JPH03124591U - - Google Patents
Info
- Publication number
- JPH03124591U JPH03124591U JP3282990U JP3282990U JPH03124591U JP H03124591 U JPH03124591 U JP H03124591U JP 3282990 U JP3282990 U JP 3282990U JP 3282990 U JP3282990 U JP 3282990U JP H03124591 U JPH03124591 U JP H03124591U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- discharge lamp
- switching element
- chopper
- current
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000009499 grossing Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
第１図は本考案の交流放電ランプ点灯装置の概
略回路図であり、第２図はチヨツパー制御駆動回
路および過大電流検出回路を詳細に示した図であ
る。第３図はリツプル含有率を説明するための図
であり、第４図は第１のスイツチング素子である
ＭＯＳＦＥＴのオン−オフ状態を示す図である。
図中、１……放電ランプ、２……極性切替回路
、３……チヨツパー回路、４……チヨツパー駆動
制御回路、５……電流検出器、３１……第１のス
イツチング素子、３２……転流ダイオード、１３
……インダクタンス要素、１５……コンデンサ、
２１，２２，２３，２４……第２のスイツチング
素子、５１……第２の電流検出器、８……過大電
流検出器。
FIG. 1 is a schematic circuit diagram of the AC discharge lamp lighting device of the present invention, and FIG. 2 is a diagram showing details of a chopper control drive circuit and an overcurrent detection circuit. FIG. 3 is a diagram for explaining the ripple content rate, and FIG. 4 is a diagram showing the on-off state of the MOSFET, which is the first switching element. In the figure, 1... Discharge lamp, 2... Polarity switching circuit, 3... Chopper circuit, 4... Chopper drive control circuit, 5... Current detector, 31... First switching element, 32... Switching circuit. current diode, 13
...Inductance element, 15...Capacitor,
21, 22, 23, 24... second switching element, 51... second current detector, 8... overcurrent detector.
Claims (1)
を有するチヨツパー回路と、このチヨツパー回路
の出力側に接続され直流を出力する平滑回路と、
この平滑回路の出力に接続され第２のスイツチン
グ素子がフルブリツジ型に構成され低周波を出力
する極性切替回路と、この極性切替回路の出力に
接続された放電ランプと、該第１のスイツチング
素子に流れる電流を検出する第１の電流検出器と
、この第１の電流検出器の信号に基づき該第１の
スイツチング素子を高周波でオン−オン制御する
チヨツパー駆動制御回路と、該放電ランプに流れ
る電流を検出する第２の電流検出器と過大電流検
出回路を有する交流放電ランプ点灯装置において
、 前記過大電流検出回路より、前記放電ランプの
点灯初期における過大電流を検出するとともにこ
の信号に基づき、前記チヨツパー駆動制御回路に
よつて前記第１のスイツチング素子をオフして、
点灯初期におけるランプ電流を制限する手段を具
備したことを特徴とする交流放電ランプ点灯装置
。[Claims for Utility Model Registration] A chopper circuit having a first switching element connected to a DC power source; a smoothing circuit connected to the output side of the chopper circuit and outputting DC;
A polarity switching circuit that is connected to the output of this smoothing circuit and has a second switching element configured as a full bridge type and outputs a low frequency; a discharge lamp that is connected to the output of this polarity switching circuit; a first current detector that detects a flowing current; a chopper drive control circuit that controls the first switching element on-on at high frequency based on a signal from the first current detector; and a chopper drive control circuit that controls the current flowing through the discharge lamp. In an AC discharge lamp lighting device having a second current detector and an overcurrent detection circuit, the overcurrent detection circuit detects an overcurrent in the initial stage of lighting of the discharge lamp, and based on this signal, turning off the first switching element by a drive control circuit;
An AC discharge lamp lighting device characterized by comprising means for limiting lamp current in the initial stage of lighting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3282990U JPH03124591U (en) | 1990-03-30 | 1990-03-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3282990U JPH03124591U (en) | 1990-03-30 | 1990-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03124591U true JPH03124591U (en) | 1991-12-17 |
Family
ID=31536033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3282990U Pending JPH03124591U (en) | 1990-03-30 | 1990-03-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03124591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008052998A (en) * | 2006-08-23 | 2008-03-06 | Matsushita Electric Works Ltd | High-pressure discharge lamp lighting device, and luminaire |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5916100B2 (en) * | 1975-02-26 | 1984-04-13 | ロジヤ−・ジヨゼフ・シエツペル | Hydride-dehydride power plant and power generation method |
| JPS63301493A (en) * | 1987-05-30 | 1988-12-08 | Kagenari Kokuno | Method of controlling power for discharge lamp and electron ballast applied thereto |
-
1990
- 1990-03-30 JP JP3282990U patent/JPH03124591U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5916100B2 (en) * | 1975-02-26 | 1984-04-13 | ロジヤ−・ジヨゼフ・シエツペル | Hydride-dehydride power plant and power generation method |
| JPS63301493A (en) * | 1987-05-30 | 1988-12-08 | Kagenari Kokuno | Method of controlling power for discharge lamp and electron ballast applied thereto |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008052998A (en) * | 2006-08-23 | 2008-03-06 | Matsushita Electric Works Ltd | High-pressure discharge lamp lighting device, and luminaire |
| US8395327B2 (en) | 2006-08-23 | 2013-03-12 | Panasonic Corporation | High-pressure discharge lamp lighting device and lighting fixture using the same |
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