JPH0244296U - - Google Patents
Info
- Publication number
- JPH0244296U JPH0244296U JP12252088U JP12252088U JPH0244296U JP H0244296 U JPH0244296 U JP H0244296U JP 12252088 U JP12252088 U JP 12252088U JP 12252088 U JP12252088 U JP 12252088U JP H0244296 U JPH0244296 U JP H0244296U
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- discharge lamp
- commercial
- transistor
- lighting device
- 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 4
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
第１図はこの考案の実施例による放電灯点灯装
置の回路図、第２図は従来の放電点灯装置の回路
図である。
図において、２はトランジスタインバーター、
６は主トランジスタ、１３は発振起動遮断回路、
２０は平滑コンデンサ、２２は放電回路、２３は
放電抵抗、２４は放電トランジスタである。なお
、各図中同一符号は同一または相当部分を示す。
FIG. 1 is a circuit diagram of a discharge lamp lighting device according to an embodiment of this invention, and FIG. 2 is a circuit diagram of a conventional discharge lamp lighting device. In the figure, 2 is a transistor inverter;
6 is a main transistor, 13 is an oscillation start-up cutoff circuit,
20 is a smoothing capacitor, 22 is a discharge circuit, 23 is a discharge resistor, and 24 is a discharge transistor. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
滑コンデンサを有し、この直流電圧をトランジス
タインバーターを介して高周波電圧に交換し、放
電ランプを点灯させる装置で、商用交流電源投入
からトランジスタインバーターの主トランジスタ
にベース電流を供給し、一定時間経過後このベー
ス電流を遮断する発振起動遮断回路を有する放電
灯点灯装置において、上記平滑コンデンサと並列
に接続される互いに直列接続された放電抵抗と放
電トランジスタを有し、上記商用交流電源投入時
には放電トランジスタを停止、商用交流電源停止
時には平滑コンデンサの残留電荷によつて放電ト
ランジスタを投入するように制御される放電回路
を備えたことを特徴とする放電灯点灯装置。 This device has a smoothing capacitor that smoothes the DC voltage obtained by rectifying the commercial AC power supply, and converts this DC voltage into a high-frequency voltage via a transistor inverter to light a discharge lamp. A discharge lamp lighting device having an oscillation start-up and cutoff circuit that supplies a base current to the base current and cuts off the base current after a certain period of time has passed, the discharge lamp lighting device having a discharge resistor and a discharge transistor connected in series with each other and connected in parallel with the smoothing capacitor. A discharge lamp lighting device comprising a discharge circuit that is controlled to stop the discharge transistor when the commercial AC power source is turned on, and to turn on the discharge transistor by the residual charge of the smoothing capacitor when the commercial AC power source is turned off. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12252088U JPH0244296U (en) | 1988-09-19 | 1988-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12252088U JPH0244296U (en) | 1988-09-19 | 1988-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0244296U true JPH0244296U (en) | 1990-03-27 |
Family
ID=31370530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12252088U Pending JPH0244296U (en) | 1988-09-19 | 1988-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0244296U (en) |
-
1988
- 1988-09-19 JP JP12252088U patent/JPH0244296U/ja active Pending