JPH0449500U - - Google Patents
Info
- Publication number
- JPH0449500U JPH0449500U JP9138490U JP9138490U JPH0449500U JP H0449500 U JPH0449500 U JP H0449500U JP 9138490 U JP9138490 U JP 9138490U JP 9138490 U JP9138490 U JP 9138490U JP H0449500 U JPH0449500 U JP H0449500U
- Authority
- JP
- Japan
- Prior art keywords
- switching
- lighting device
- switching element
- switching loss
- circuit
- 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
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Description
第１図は、この考案のインバータ照明装置の一
実施例を示す回路構成図、第２図は、第１図に示
したスイツチング損失監視回路のスイツチング損
失補償特性図、第３図は、第１図に示した調光回
路各部の信号波形図、第４図は、この考案のイン
バータ照明装置の他の実施例を示す回路構成図、
第５図は、従来のインバータ照明装置の一例を示
す回路構成図、第６，７図は、それぞれ第５図に
示したスイツチングトランジスタ各部の電圧波形
図である。
２……蛍光ランプ、３……点灯回路、１１，２
１……インバータ照明装置、１２……調光回路、
１７……スイツチング損失監視回路、２２……電
圧比較器、２３……アンドゲート回路。
FIG. 1 is a circuit configuration diagram showing an embodiment of the inverter lighting device of this invention, FIG. 2 is a switching loss compensation characteristic diagram of the switching loss monitoring circuit shown in FIG. 1, and FIG. FIG. 4 is a circuit configuration diagram showing another embodiment of the inverter lighting device of this invention;
FIG. 5 is a circuit configuration diagram showing an example of a conventional inverter lighting device, and FIGS. 6 and 7 are voltage waveform diagrams of various parts of the switching transistor shown in FIG. 5, respectively. 2...Fluorescent lamp, 3...Lighting circuit, 11,2
1...Inverter lighting device, 12...Dimmer circuit,
17... Switching loss monitoring circuit, 22... Voltage comparator, 23... AND gate circuit.
Claims (1)
子のスイツチング周波数に応じて励振させ、照明
ランプを高周波点灯するインバータ照明装置であ
つて、前記スイツチング素子のスイツチング損失
を監視し、該スイツチング損失が一定限度を越え
ぬよう前記スイツチング素子のオンオフデユーテ
イ比を制御するスイツチング損失監視手段を具備
することを特徴とするインバータ照明装置。 An inverter lighting device that excites a lighting circuit having a resonant circuit in accordance with the switching frequency of a switching element to light an illumination lamp at high frequency, wherein the switching loss of the switching element is monitored and the switching loss exceeds a certain limit. An inverter lighting device comprising switching loss monitoring means for controlling an on-off duty ratio of the switching element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9138490U JPH0449500U (en) | 1990-08-31 | 1990-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9138490U JPH0449500U (en) | 1990-08-31 | 1990-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0449500U true JPH0449500U (en) | 1992-04-27 |
Family
ID=31826951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9138490U Pending JPH0449500U (en) | 1990-08-31 | 1990-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0449500U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02181396A (en) * | 1988-12-28 | 1990-07-16 | Toshiba Lighting & Technol Corp | Discharge lamp lighting device and illumination apparatus using it |
-
1990
- 1990-08-31 JP JP9138490U patent/JPH0449500U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02181396A (en) * | 1988-12-28 | 1990-07-16 | Toshiba Lighting & Technol Corp | Discharge lamp lighting device and illumination apparatus using it |
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