JPS62116500U - - Google Patents
Info
- Publication number
- JPS62116500U JPS62116500U JP436586U JP436586U JPS62116500U JP S62116500 U JPS62116500 U JP S62116500U JP 436586 U JP436586 U JP 436586U JP 436586 U JP436586 U JP 436586U JP S62116500 U JPS62116500 U JP S62116500U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- transformer
- power supply
- variable impedance
- discharge lamp
- 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
- 230000010355 oscillation Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
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
図は冷陰極放電灯の従来の駆動回路を示す回路図
である。
１……トランス、２……発振トランジスタ、３
……ターンオン用コンデンサ、９……冷陰極放電
灯、１７……可変インピーダンス回路。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing a conventional drive circuit for a cold cathode discharge lamp. 1...Transformer, 2...Oscillation transistor, 3
... Turn-on capacitor, 9 ... Cold cathode discharge lamp, 17 ... Variable impedance circuit.
Claims (1)
ランジスタのコレクタ・エミツタ間を直列接続し
、この発振トランジスタのベース・エミツタ間に
前記トランスの帰還巻線とターンオン用コンデン
サを直列に接続してブロツキング発振回路を構成
し、前記トランスの出力巻線に発生する高周波電
圧を冷陰極放電灯に印加して駆動する回路に於い
て、前記直流電源の両端間にその電源電圧に応じ
てインピーダンスが変化する可変インピーダンス
回路を接続し、この可変インピーダンス回路を介
して前記ターンオン用コンデンサに充電々流を供
給するようにしたことを特徴とする冷陰極放電灯
の駆動回路。 Blocking oscillation is achieved by connecting the input winding of a transformer and the collector and emitter of an oscillation transistor in series with respect to a DC power supply, and connecting the feedback winding of the transformer and a turn-on capacitor in series between the base and emitter of this oscillation transistor. In a circuit that constitutes a circuit and drives a cold cathode discharge lamp by applying a high frequency voltage generated in the output winding of the transformer, there is a variable impedance between both ends of the DC power supply that changes depending on the power supply voltage. 1. A driving circuit for a cold cathode discharge lamp, characterized in that an impedance circuit is connected to the variable impedance circuit, and a charging current is supplied to the turn-on capacitor via the variable impedance circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP436586U JPS62116500U (en) | 1986-01-16 | 1986-01-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP436586U JPS62116500U (en) | 1986-01-16 | 1986-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62116500U true JPS62116500U (en) | 1987-07-24 |
Family
ID=30784965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP436586U Pending JPS62116500U (en) | 1986-01-16 | 1986-01-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62116500U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59134598A (en) * | 1983-01-20 | 1984-08-02 | 松下電器産業株式会社 | Device for firing fluorescent lamp |
-
1986
- 1986-01-16 JP JP436586U patent/JPS62116500U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59134598A (en) * | 1983-01-20 | 1984-08-02 | 松下電器産業株式会社 | Device for firing fluorescent lamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS62116500U (en) | ||
| JPS62107396U (en) | ||
| JPS62193371U (en) | ||
| JPS6274800U (en) | ||
| JPH0476189U (en) | ||
| JPH0186480U (en) | ||
| JPH0476188U (en) | ||
| JPS62203565U (en) | ||
| JPS6312189U (en) | ||
| JPH0425486U (en) | ||
| JPS6184921U (en) | ||
| JPH0340893U (en) | ||
| JPH0350985U (en) | ||
| JPS62161589U (en) | ||
| JPS6037200U (en) | High frequency discharge lamp lighting device | |
| JPS61153446U (en) | ||
| JPS624885U (en) | ||
| JPS6184920U (en) | ||
| JPS62193370U (en) | ||
| JPS6260011U (en) | ||
| JPS5857129U (en) | Pulse generation circuit | |
| JPH031690U (en) | ||
| JPS63125427U (en) | ||
| JPS61123685U (en) | ||
| JPS63689U (en) |