GB238845A - Improvements in or relating to electric luminous discharge tubes - Google Patents
Improvements in or relating to electric luminous discharge tubesInfo
- Publication number
- GB238845A GB238845A GB5742/25A GB574225A GB238845A GB 238845 A GB238845 A GB 238845A GB 5742/25 A GB5742/25 A GB 5742/25A GB 574225 A GB574225 A GB 574225A GB 238845 A GB238845 A GB 238845A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- electrodes
- transformer
- those
- secondaries
- 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
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
238,845. General Electric Co., Ltd., (Assignees of Patent Treuhand Ges. f³r Elektrische Gluhlampen). Aug. 22, 1924, [Convention date]. Vacuum tubes.-A discharge tube suitable for use in lighting and advertising is provided with one or more electrodes bl - - b<9>, Fig. 1, intermediate to the end electrodes b, b<10>, each length of tube between two adjacent electrodes being excited bv a separate secondary winding g of a transformer, in such a way that current in adjacent sections of the tube is in opposite directions and the maximum potential difference is the same as that of one section. The secondary windings may all be on one transformer, in the primary circuit of which a variable resistance e may be connected; or a number of transformers may be provided. Each section of the tube may be fed by several windings. The electrodes may be placed in short branch tubes c. Regulating- devices may be provided so that certain sections, for instance those corresponding to the downstrokes of a script sign, may be more luminous than the others. In a forked tube, for instance one of Y form, the currents in two branches may unite to pass through the third. Another form of tube is shown in Fig. 3, those electrodes marked A being connected to similar ends of the transformer secondaries, and those marked E to the opposite ends of the secondaries. Specifications 12582/02 and 14864/12 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE238845X | 1924-08-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB238845A true GB238845A (en) | 1925-11-19 |
Family
ID=5903668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5742/25A Expired GB238845A (en) | 1924-08-22 | 1925-03-02 | Improvements in or relating to electric luminous discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB238845A (en) |
-
1925
- 1925-03-02 GB GB5742/25A patent/GB238845A/en not_active Expired
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