JPS621394U - - Google Patents
Info
- Publication number
- JPS621394U JPS621394U JP9202785U JP9202785U JPS621394U JP S621394 U JPS621394 U JP S621394U JP 9202785 U JP9202785 U JP 9202785U JP 9202785 U JP9202785 U JP 9202785U JP S621394 U JPS621394 U JP S621394U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- transistor
- base
- oscillation transformer
- 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 5
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
第１図はこの考案の一実施例を示す回路図、第
２図は同実施例におけるスイツチングトランジス
タのコレクタ・エミツタ間電圧を示す波形図、第
３図及び第４図はこの考案の他の実施例を示す部
分回路図、第５図は従来におけるスイツチングト
ランジスタのコレクタ・エミツタ間電圧を示す波
形図である。
４……インバータ回路、５……発振トランス、
６……スイツチングトランジスタ、７……コンデ
ンサ、１０……ベースインダクタ、１１，１３…
…抵抗、１４……コンデンサ、１８……放電灯、
１９……始動回路、２０……インダクタンスコイ
ル。
Fig. 1 is a circuit diagram showing an embodiment of this invention, Fig. 2 is a waveform diagram showing the collector-emitter voltage of the switching transistor in the same embodiment, and Figs. 3 and 4 are another example of this invention. FIG. 5, which is a partial circuit diagram showing an embodiment, is a waveform diagram showing the collector-emitter voltage of a conventional switching transistor. 4... Inverter circuit, 5... Oscillation transformer,
6... Switching transistor, 7... Capacitor, 10... Base inductor, 11, 13...
...Resistor, 14...Capacitor, 18...Discharge lamp,
19... Starting circuit, 20... Inductance coil.
Claims (1)
回路を構成するコンデンサ、前記発振トランスの
巻線に流れる電流を断続制御するスイツチングト
ランジスタ及び前記発振トランスの巻線に誘起さ
れる電圧に応動して前記トランジスタにベース電
流を帰還し、そのトランジスタをスイツチング制
御するベース駆動回路からなるインバータ回路と
、このインバータ回路の前記発振トランスから電
力を供給されて点灯動作する放電灯と、この放電
灯に並列的に接続された始動回路と、この始動回
路に直列に介挿され、前記ベース駆動回路によつ
て前記トランジスタのベースに帰還されるベース
電流に前記始動回路の電流を重畳させる作用を為
すインダクタンスコイルとを具備してなることを
特徴とする放電灯点灯装置。 an oscillation transformer, a capacitor that forms a resonant circuit with the winding of the oscillation transformer, a switching transistor that controls on and off the current flowing in the winding of the oscillation transformer, and An inverter circuit consisting of a base drive circuit that feeds back a base current to a transistor and controls switching of the transistor, a discharge lamp that operates by being supplied with power from the oscillation transformer of this inverter circuit, and an inverter circuit connected in parallel to the discharge lamp. a starting circuit connected to the starting circuit; and an inductance coil that is inserted in series with the starting circuit and has the function of superimposing the current of the starting circuit on the base current fed back to the base of the transistor by the base drive circuit. A discharge lamp lighting device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9202785U JPS621394U (en) | 1985-06-18 | 1985-06-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9202785U JPS621394U (en) | 1985-06-18 | 1985-06-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS621394U true JPS621394U (en) | 1987-01-07 |
Family
ID=30648448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9202785U Pending JPS621394U (en) | 1985-06-18 | 1985-06-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS621394U (en) |
-
1985
- 1985-06-18 JP JP9202785U patent/JPS621394U/ja active Pending
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