GB589773A - Fluorescent electric discharge tube - Google Patents
Fluorescent electric discharge tubeInfo
- Publication number
- GB589773A GB589773A GB8279/45A GB827945A GB589773A GB 589773 A GB589773 A GB 589773A GB 8279/45 A GB8279/45 A GB 8279/45A GB 827945 A GB827945 A GB 827945A GB 589773 A GB589773 A GB 589773A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- electric discharge
- discharge tube
- condenser
- shield
- 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
- H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
- H05B41/20—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch
- H05B41/22—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps having an auxiliary starting electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
- H01J61/545—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode inside the vessel
Landscapes
- Discharge Lamp (AREA)
Abstract
589,773. Discharge lamps. LUMALAM. PAN AKTIEBOLAG. April 4, 1945, No. 8279. Convention date, May 2, 1944. [Class 39 (i)] A fluorescent lamp 1 with filling of rare gas or mercury vapour has incandescent coil electrodes 3 and 10 and auxiliary starting cupshaped electrodes 2 and 13 acting also as cathode shields, the shield 2 being connected to the opposite electrode 10 through a condenser 9 and shield 13 to electrode 3 through a condenser 16. The condensers may be located in the caps of the tube or may be replaced by any impedance. The starting electrodes 2 and 13 have. coatings of emissive material.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE589773X | 1944-05-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB589773A true GB589773A (en) | 1947-06-30 |
Family
ID=20312589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8279/45A Expired GB589773A (en) | 1944-05-02 | 1945-04-04 | Fluorescent electric discharge tube |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB589773A (en) |
-
1945
- 1945-04-04 GB GB8279/45A patent/GB589773A/en not_active Expired
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