JPH03124594U - - Google Patents
Info
- Publication number
- JPH03124594U JPH03124594U JP3283290U JP3283290U JPH03124594U JP H03124594 U JPH03124594 U JP H03124594U JP 3283290 U JP3283290 U JP 3283290U JP 3283290 U JP3283290 U JP 3283290U JP H03124594 U JPH03124594 U JP H03124594U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- discharge lamp
- lighting device
- lamp lighting
- 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 4
- 238000009499 grossing Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 1
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
第1図は考案明の交流放電ランプ点灯装置の概
略回路図であり、第2図はリツプル含有率を説明
するための図である。
図中、1……放電ランプ、2……極性切替回路
、3……チヨツパー回路、31……第1のスイツ
チング素子、10……フイルタ回路、13……第
1のインダクタンス要素、14……第2のインダ
クタンス要素、15……平滑用コンデンサ、C1
……起動性改善用コンデンサ、21,22,23
,24……第2のスイツチング素子、12……起
動器。
FIG. 1 is a schematic circuit diagram of the AC discharge lamp lighting device of the invention, and FIG. 2 is a diagram for explaining the ripple content rate. In the figure, 1... discharge lamp, 2... polarity switching circuit, 3... chopper circuit, 31... first switching element, 10... filter circuit, 13... first inductance element, 14...... 2 inductance element, 15...smoothing capacitor, C1
... Capacitor for improving starting performance, 21, 22, 23
, 24... second switching element, 12... starter.
Claims (1)
転流ダイオード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第1のインダ
クタンス要素、平滑用第1のコンデンサ、第2の
インダクタンス要素が接続されたT型フイルタ回
路と、このT型フイルタ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を高周波でオン−オフ制御す
るチヨツパー駆動制御回路とを有する交流放電ラ
ンプ点灯装置において、 前記T型フイルタ回路の出力には前記極性切替
回路と並列に起動性改善用コンデンサが接続され
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 connected to a DC power source and having a first switching element and a commutating diode, a first inductance element connected to the output side of the chopper circuit, a first smoothing capacitor, a T-type filter circuit to which a second inductance element is connected; a polarity switching circuit that is connected to the output of the T-type filter circuit and has a second switching element configured in a full bridge type to output a low frequency; and this polarity switching circuit. a discharge lamp connected to the output of the first
In the AC discharge lamp lighting device, the AC discharge lamp lighting device has a chopper drive control circuit that controls on-off switching elements at high frequency, and a startability improvement capacitor is connected to the output of the T-type filter circuit in parallel with the polarity switching circuit. An AC discharge lamp lighting device characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3283290U JPH03124594U (en) | 1990-03-30 | 1990-03-30 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3283290U JPH03124594U (en) | 1990-03-30 | 1990-03-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03124594U true JPH03124594U (en) | 1991-12-17 |
Family
ID=31536036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3283290U Pending JPH03124594U (en) | 1990-03-30 | 1990-03-30 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03124594U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006031971A (en) * | 2004-07-12 | 2006-02-02 | Plus Vision Corp | Lamp lighting device and projector using it |
-
1990
- 1990-03-30 JP JP3283290U patent/JPH03124594U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006031971A (en) * | 2004-07-12 | 2006-02-02 | Plus Vision Corp | Lamp lighting device and projector using it |
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