FI904110A - Foerfarande och anordning foer justering av ljuseffekten hos en gasurladdningslampa, speciellt en gloedlampa. - Google Patents
Foerfarande och anordning foer justering av ljuseffekten hos en gasurladdningslampa, speciellt en gloedlampa.Info
- Publication number
- FI904110A FI904110A FI904110A FI904110A FI904110A FI 904110 A FI904110 A FI 904110A FI 904110 A FI904110 A FI 904110A FI 904110 A FI904110 A FI 904110A FI 904110 A FI904110 A FI 904110A
- Authority
- FI
- Finland
- Prior art keywords
- ljuseffekten
- gloedlampa
- gasurladdningslampa
- speciellt
- hos
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
- H05B41/2825—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage
- H05B41/2828—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage using control circuits for the switching elements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
- H05B41/39—Controlling the intensity of light continuously
- H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
- H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
- H05B41/3927—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by pulse width modulation
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI904110A FI85320C (fi) | 1990-08-20 | 1990-08-20 | Foerfarande och anordning foer justering av ljuseffekten hos en gasurladdningslampa, speciellt en gloedlampa. |
EP19910304850 EP0472265A3 (en) | 1990-08-20 | 1991-05-29 | A method of and a device for regulating the luminosity of a gas-discharge lamp, especially a fluorescent lamp |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI904110 | 1990-08-20 | ||
FI904110A FI85320C (fi) | 1990-08-20 | 1990-08-20 | Foerfarande och anordning foer justering av ljuseffekten hos en gasurladdningslampa, speciellt en gloedlampa. |
Publications (4)
Publication Number | Publication Date |
---|---|
FI904110A0 FI904110A0 (fi) | 1990-08-20 |
FI85320B FI85320B (fi) | 1991-12-13 |
FI904110A true FI904110A (fi) | 1991-12-13 |
FI85320C FI85320C (fi) | 1992-03-25 |
Family
ID=8530951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI904110A FI85320C (fi) | 1990-08-20 | 1990-08-20 | Foerfarande och anordning foer justering av ljuseffekten hos en gasurladdningslampa, speciellt en gloedlampa. |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0472265A3 (fi) |
FI (1) | FI85320C (fi) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW344190B (en) * | 1992-09-22 | 1998-11-01 | Matsushita Electric Works Ltd | Discharge lamp lighting device |
GB2325099A (en) * | 1997-05-07 | 1998-11-11 | David John Aarons | Gas discharge lamp drive circuit; dimming |
DE60112941T2 (de) * | 2000-06-20 | 2006-06-29 | Koninklijke Philips Electronics N.V. | Schaltungsanordnung |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6057673B2 (ja) * | 1980-09-03 | 1985-12-16 | 株式会社エルモ社 | 交流放電灯の電源装置 |
US4388563A (en) * | 1981-05-26 | 1983-06-14 | Commodore Electronics, Ltd. | Solid-state fluorescent lamp ballast |
GB2162664B (en) * | 1984-07-30 | 1987-12-16 | Westinghouse Brake & Signal | Power control circuit |
GB2196803B (en) * | 1986-10-24 | 1990-10-31 | Kyoei Densoku Co Ltd | High-frequency power supply output control arrangement |
US4884186A (en) * | 1987-12-10 | 1989-11-28 | Boschert Incorporated | Power supply with reduced switching losses |
US4904903A (en) * | 1988-04-05 | 1990-02-27 | Innovative Controls, Inc. | Ballast for high intensity discharge lamps |
US4920299A (en) * | 1988-04-27 | 1990-04-24 | General Electric Company | Push-pull fluorescent dimming circuit |
-
1990
- 1990-08-20 FI FI904110A patent/FI85320C/fi not_active IP Right Cessation
-
1991
- 1991-05-29 EP EP19910304850 patent/EP0472265A3/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP0472265A3 (en) | 1992-05-27 |
EP0472265A2 (en) | 1992-02-26 |
FI85320B (fi) | 1991-12-13 |
FI85320C (fi) | 1992-03-25 |
FI904110A0 (fi) | 1990-08-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG | Patent granted |
Owner name: TEKNOWARE OY |
|
MA | Patent expired |