JPH0214698U - - Google Patents
Info
- Publication number
- JPH0214698U JPH0214698U JP8997588U JP8997588U JPH0214698U JP H0214698 U JPH0214698 U JP H0214698U JP 8997588 U JP8997588 U JP 8997588U JP 8997588 U JP8997588 U JP 8997588U JP H0214698 U JPH0214698 U JP H0214698U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- discharge lamp
- transformer
- lighting device
- smoothing circuit
- 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
- 238000009499 grossing Methods 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は従来の半導体スイツチング方式を採用した放
電灯点灯装置の回路図、第３図ａは第２図の装置
における放電灯に流れる電流のタイムチヤート、
同図ｂは第２図の装置の各素子の電圧、電流のタ
イムチヤートである。
図中、４：平滑回路、５：起動器、６：放電灯
、７：立消え防止用定電流回路、８：電流制御回
路、９：ドライブ回路、１０：インバータ、１１
：高電圧重畳回路、１２：整流平滑回路、Ｄ１：
整流器、Ｃ１，Ｃ２，Ｃ３：コンデンサ、Ｔ１：
トランス、ＴＲ１，ＴＲ２：半導体スイツチング
素子、ＴＲ３：トランジスタ、ＺＤ：ツエナダイ
オード。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram of a discharge lamp lighting device that uses a conventional semiconductor switching method, and Figure 3a is a time chart of the current flowing through the discharge lamp in the device of Figure 2.
Figure b is a time chart of the voltage and current of each element of the apparatus shown in Figure 2. In the figure, 4: smoothing circuit, 5: starter, 6: discharge lamp, 7: constant current circuit for preventing extinguishing, 8: current control circuit, 9: drive circuit, 10: inverter, 11
: High voltage superimposition circuit, 12: Rectification and smoothing circuit, D 1 :
Rectifier, C 1 , C 2 , C 3 : Capacitor, T 1 :
Transformer, TR 1 , TR 2 : semiconductor switching element, TR 3 : transistor, ZD: Zener diode.
Claims (1)
インバータ回路と、トランスの２次側の一方の巻
線に順次接続された整流回路と、平滑回路と、前
記トランスの２次側の別巻線に一方が接続され、
他方が平滑回路の出力側に接続された高電圧重畳
回路とからなる放電灯点灯装置において、前記平
滑回路の出力側と、放電灯との間にコンデンサを
含む立消え防止用定電流回路を具備したことを特
徴とする放電灯点灯装置。 an inverter circuit having a semiconductor switching element and a transformer, a rectifier circuit connected in sequence to one winding on the secondary side of the transformer, a smoothing circuit, one of which is connected to another winding on the secondary side of the transformer,
A discharge lamp lighting device comprising a high voltage superimposition circuit, the other of which is connected to the output side of a smoothing circuit, comprising a constant current circuit for preventing extinguishment including a capacitor between the output side of the smoothing circuit and the discharge lamp. A discharge lamp lighting device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8997588U JPH0214698U (en) | 1988-07-08 | 1988-07-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8997588U JPH0214698U (en) | 1988-07-08 | 1988-07-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0214698U true JPH0214698U (en) | 1990-01-30 |
Family
ID=31314512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8997588U Pending JPH0214698U (en) | 1988-07-08 | 1988-07-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0214698U (en) |
-
1988
- 1988-07-08 JP JP8997588U patent/JPH0214698U/ja active Pending
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