DE2967585D1 - Fluorescent lamp lighting system - Google Patents
Fluorescent lamp lighting systemInfo
- Publication number
- DE2967585D1 DE2967585D1 DE7979901332T DE2967585T DE2967585D1 DE 2967585 D1 DE2967585 D1 DE 2967585D1 DE 7979901332 T DE7979901332 T DE 7979901332T DE 2967585 T DE2967585 T DE 2967585T DE 2967585 D1 DE2967585 D1 DE 2967585D1
- Authority
- DE
- Germany
- Prior art keywords
- fluorescent lamp
- lighting system
- lamp lighting
- fluorescent
- lighting
- 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.)
- Expired
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
- H05B41/36—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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US94584278A | 1978-09-26 | 1978-09-26 | |
PCT/US1979/000785 WO1980000776A1 (en) | 1978-09-26 | 1979-09-26 | Energy conserving automatic light output system |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2967585D1 true DE2967585D1 (en) | 1986-04-17 |
Family
ID=25483619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE7979901332T Expired DE2967585D1 (en) | 1978-09-26 | 1979-09-26 | Fluorescent lamp lighting system |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0020493B1 (en) |
JP (1) | JPS5598500A (en) |
CA (1) | CA1128605A (en) |
DE (1) | DE2967585D1 (en) |
FR (1) | FR2443183A2 (en) |
MX (1) | MX149353A (en) |
WO (1) | WO1980000776A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2165407B (en) * | 1984-10-02 | 1988-01-20 | Ferranti Plc | Gas laser power supply apparatus |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3114283A (en) * | 1960-10-31 | 1963-12-17 | Bausch & Lomb | Light sensing method and apparatus therefor |
US3482142A (en) * | 1967-12-29 | 1969-12-02 | Sylvania Electric Prod | Regulating system for arc discharge devices having means to compensate for supply voltage and load variations |
US3479560A (en) * | 1967-12-29 | 1969-11-18 | Sylvania Electric Prod | Arc discharge regulating device having means to compensate for supply voltage variations |
DE2019240A1 (en) * | 1969-04-23 | 1970-11-12 | Fuji Photo Film Co Ltd | Copy device for color photography |
CA1128604A (en) * | 1977-11-07 | 1982-07-27 | Don F. Widmayer | Energy conserving automatic light output system |
-
1979
- 1979-01-24 CA CA320,173A patent/CA1128605A/en not_active Expired
- 1979-09-25 MX MX17938979A patent/MX149353A/en unknown
- 1979-09-26 WO PCT/US1979/000785 patent/WO1980000776A1/en unknown
- 1979-09-26 JP JP12373779A patent/JPS5598500A/en active Pending
- 1979-09-26 DE DE7979901332T patent/DE2967585D1/en not_active Expired
- 1979-09-26 FR FR7923905A patent/FR2443183A2/en active Granted
-
1980
- 1980-04-22 EP EP19790901332 patent/EP0020493B1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CA1128605A (en) | 1982-07-27 |
JPS5598500A (en) | 1980-07-26 |
FR2443183A2 (en) | 1980-06-27 |
MX149353A (en) | 1983-10-26 |
FR2443183B2 (en) | 1984-06-15 |
EP0020493B1 (en) | 1986-03-12 |
WO1980000776A1 (en) | 1980-04-17 |
EP0020493A4 (en) | 1982-04-22 |
EP0020493A1 (en) | 1981-01-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |