JPH0225199U - - Google Patents
Info
- Publication number
- JPH0225199U JPH0225199U JP10323788U JP10323788U JPH0225199U JP H0225199 U JPH0225199 U JP H0225199U JP 10323788 U JP10323788 U JP 10323788U JP 10323788 U JP10323788 U JP 10323788U JP H0225199 U JPH0225199 U JP H0225199U
- Authority
- JP
- Japan
- Prior art keywords
- transformer
- circuit
- discharge lamp
- switching element
- semiconductor switching
- 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
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
第１図は本考案の１実施例を示す回路図、第２
図は従来の回路図、第３図ａは入力電圧として１
００Ｖかかつた時のトランスの１次側の電圧、第
３図ｂは入力電圧が変動した時にスイツチングパ
ルスを制御したタイミングチヤートを示したもの
である。
１：交流電源、６：放電灯、８：電流制御回路
、９：ドライブ回路、１０：インバータ回路、１
１：重畳回路、１２：デツトタイムコントローラ
、ＴＲ１，ＴＲ２：半導体スイツチング素子、Ｔ
１：トランス。
Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing one embodiment of the present invention.
The figure shows a conventional circuit diagram, and Figure 3a shows 1 as the input voltage.
The voltage on the primary side of the transformer when 00V is applied. Figure 3b shows a timing chart for controlling the switching pulse when the input voltage fluctuates. 1: AC power supply, 6: Discharge lamp, 8: Current control circuit, 9: Drive circuit, 10: Inverter circuit, 1
1: Superimposition circuit, 12: Dead time controller, TR1, TR2: Semiconductor switching element, T
1: Trance.
Claims (1)
インバーター回路と、トランスの２次側の巻線に
は順次接続された整流回路と平滑回路と放電灯を
有し、前記トランスの２次側の別巻線には点灯前
において電圧を検出して、この検出信号を受けて
前記半導体スイツチング素子のスイツチングパル
スを制御するデツトタイムコントロール回路を有
する装置において、 前記トランスの入力電圧が上昇した時、スイツ
チングパルス幅を縮めることにより前記トランス
の飽和を避ける手段を具備したことを特徴とする
放電灯点灯装置。[Claims for Utility Model Registration] An inverter circuit having a semiconductor switching element and a transformer, a rectifier circuit, a smoothing circuit, and a discharge lamp connected in sequence to the secondary winding of the transformer; In a device having a dead time control circuit in a separate winding on the side that detects voltage before lighting and controls switching pulses of the semiconductor switching element in response to this detection signal, when the input voltage of the transformer increases. . A discharge lamp lighting device, comprising means for avoiding saturation of the transformer by reducing the switching pulse width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10323788U JPH0225199U (en) | 1988-08-05 | 1988-08-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10323788U JPH0225199U (en) | 1988-08-05 | 1988-08-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0225199U true JPH0225199U (en) | 1990-02-19 |
Family
ID=31333880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10323788U Pending JPH0225199U (en) | 1988-08-05 | 1988-08-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0225199U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5735559A (en) * | 1980-08-13 | 1982-02-26 | Tokai Denka Kogyo Kk | Preparation of dihydroxydiphenylsulfone |
| JPS5746311A (en) * | 1980-09-04 | 1982-03-16 | Seiko Epson Corp | Magnetic head for vertical magnetic recording |
-
1988
- 1988-08-05 JP JP10323788U patent/JPH0225199U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5735559A (en) * | 1980-08-13 | 1982-02-26 | Tokai Denka Kogyo Kk | Preparation of dihydroxydiphenylsulfone |
| JPS5746311A (en) * | 1980-09-04 | 1982-03-16 | Seiko Epson Corp | Magnetic head for vertical magnetic recording |