GB383862A - Improvements in luminous electric discharge tubes - Google Patents
Improvements in luminous electric discharge tubesInfo
- Publication number
- GB383862A GB383862A GB9797/32A GB979732A GB383862A GB 383862 A GB383862 A GB 383862A GB 9797/32 A GB9797/32 A GB 9797/32A GB 979732 A GB979732 A GB 979732A GB 383862 A GB383862 A GB 383862A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- starting
- filaments
- electric discharge
- discharge tubes
- 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
Landscapes
- Discharge Lamp (AREA)
Abstract
383,862. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent- Treuhand Ges. f³r Elektrische Gl³hlampen ; 11, Ehrenbergstrasse, Berlin.) April 5, 1932, No. 9797. Convention date, May 15, 1931. [Class 39 (i).] A tube 1 with thermionic electrodes 2, 3 of low work function contains heated filaments 4, 5 which are not connected to the electrodes 2, 3 and which emit electrons to ionize the filling at starting. The filaments may be coated with or mav heat blocks or sleeves of oxides or nitrides of alkali, alkaline earth, or rare earth metals, or of the metals themselves, and may be heated together with the main electrodes from a transformer 11 which may or may not be switched out after starting.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE383862X | 1931-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB383862A true GB383862A (en) | 1932-11-24 |
Family
ID=6367175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9797/32A Expired GB383862A (en) | 1931-05-15 | 1932-04-05 | Improvements in luminous electric discharge tubes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB383862A (en) |
-
1932
- 1932-04-05 GB GB9797/32A patent/GB383862A/en not_active Expired
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