JPH0391699U - - Google Patents
Info
- Publication number
- JPH0391699U JPH0391699U JP1989152351U JP15235189U JPH0391699U JP H0391699 U JPH0391699 U JP H0391699U JP 1989152351 U JP1989152351 U JP 1989152351U JP 15235189 U JP15235189 U JP 15235189U JP H0391699 U JPH0391699 U JP H0391699U
- Authority
- JP
- Japan
- Prior art keywords
- feedback
- high voltage
- inverter
- converter
- progresses
- 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.)
- Granted
Links
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Electroluminescent Light Sources (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Description
第１図と第２図は本考案のＥＬ点灯回路とＥＬ
点灯時間−ＥＬ入力電力、輝度の特性図、第３図
は本考案の帰還量を決定する回路、第４図は本考
案の別の実施例であるＥＬ点灯回路、第５図は従
来のＥＬ点灯回路である。
以上第１図〜第４図の中の主要な部分の符号は
、１００，１０２，２００……電力制御型ＤＣ−
ＤＣコンバータ、１０１，１０３……ＤＣ−ＡＣ
インバータ、である。
Figures 1 and 2 show the EL lighting circuit and EL of the present invention.
Characteristic diagram of lighting time vs. EL input power and brightness, Fig. 3 is a circuit that determines the amount of feedback of the present invention, Fig. 4 is an EL lighting circuit that is another embodiment of the present invention, and Fig. 5 is a conventional EL This is a lighting circuit. The codes of the main parts in Figs. 1 to 4 above are 100, 102, 200...power control type DC-
DC converter, 101, 103...DC-AC
It is an inverter.
Claims (1)
ＤＣ−ＤＣコンバータと、前記直流高電圧を交流
に交換するＤＣ−ＡＣインバータとでなるＥＬ点
灯回路において 前記電力制御型ＤＣ−ＤＣコンバータは、前記
直流高電圧値を帰還する帰還回路を有し、 前記帰還は、前記ＤＣ−ＡＣインバータの設計
に応じて選び、前記ＤＣ−ＡＣインバータを一定
入力電力下で動作させた時、前記ＥＬの寿命の進
行に伴い前記直流高電圧が増加するものに対して
は正帰還とし、減少するものに対しては負帰還と
し、いずれの場合も、前記ＥＬの寿命の進行に伴
つて入力電力を増大させるように帰還量を選んだ
ことを特徴とするＥＬ点灯回路。[Claims for Utility Model Registration] In an EL lighting circuit comprising a power control type DC-DC converter that exchanges DC voltage to DC high voltage, and a DC-AC inverter that exchanges the DC high voltage to AC, the power control The type DC-DC converter has a feedback circuit that feeds back the DC high voltage value, and the feedback circuit is selected depending on the design of the DC-AC inverter and operates the DC-AC inverter under constant input power. When the DC high voltage increases as the life of the EL progresses, positive feedback is used, and when it decreases, negative feedback is used. In either case, as the life of the EL progresses, An EL lighting circuit characterized in that the amount of feedback is selected so as to increase the input power accordingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989152351U JP2512155Y2 (en) | 1989-12-27 | 1989-12-27 | EL lighting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989152351U JP2512155Y2 (en) | 1989-12-27 | 1989-12-27 | EL lighting circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0391699U true JPH0391699U (en) | 1991-09-18 |
| JP2512155Y2 JP2512155Y2 (en) | 1996-09-25 |
Family
ID=31698620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989152351U Expired - Lifetime JP2512155Y2 (en) | 1989-12-27 | 1989-12-27 | EL lighting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2512155Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6343745A (en) * | 1986-08-11 | 1988-02-24 | Sumitomo Heavy Ind Ltd | Molten metal supplying device for twin belt caster |
-
1989
- 1989-12-27 JP JP1989152351U patent/JP2512155Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6343745A (en) * | 1986-08-11 | 1988-02-24 | Sumitomo Heavy Ind Ltd | Molten metal supplying device for twin belt caster |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2512155Y2 (en) | 1996-09-25 |
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