GB400764A - Improvements in electric discharge tubes - Google Patents
Improvements in electric discharge tubesInfo
- Publication number
- GB400764A GB400764A GB26164/32A GB2616432A GB400764A GB 400764 A GB400764 A GB 400764A GB 26164/32 A GB26164/32 A GB 26164/32A GB 2616432 A GB2616432 A GB 2616432A GB 400764 A GB400764 A GB 400764A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- cathodes
- discharge
- tube
- anodes
- 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
- H05B41/23—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 not having an auxiliary starting electrode
- H05B41/232—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 not having an auxiliary starting electrode for low-pressure lamps
- H05B41/2325—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 not having an auxiliary starting electrode for low-pressure lamps provided with pre-heating electrodes
Landscapes
- Discharge Lamp (AREA)
Abstract
400,764. Discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Sept. 20, 1932, No. 26164. Convention date, Nov. 28, 1931. [Class 39 (i).] An electric discharge tube; with a gaseous filling and electrodes so spaced that the discharge has the characteristic of an arc discharge without a positive column, is provided with two incandescent cathodes 3 4, respectively connected to anodes 9, 10 adjacent thereto. The cathodes 3, 4 are helically wound and coated with an electronemitting layer, such as an alkaline earth oxide, the anodes 9, 10 being in the form of nickel cylinders surrounding the cathodes. The distance between the anodes is less than that between the cathodes, and the supply conductors of the electrodes are taken out at one end of the tube, through the stem 2. The cathodes 3, 4 are respectively connected to pole wires 5, 6 and 7, 8 preferably coated with a layer of insulating material such as magnesium oxide or surrounded by a tube of that material, the anode 9 being connected to the wire 6 by a supporting-wire 11, and anode 10 connected to the pole wire 7 by a supporting-wire 12. Alternatively the anodes may be connected outside the tube to the cathode supply conductors. In the example the discharge tube is operated by a transformer 13 with a primary winding 14 and a secondary winding 15 which comprises a few turns 16 supplying current to the cathode 4, and turns 17 supplying current to the cathode 3. With this arrangement, when the anode 9 has a positive potential with respect to the cathode 4 it is also positive with respect to the cathode 3, so that during the discharge the proportion of current passing from the anode 9 is greater than that from cathode 3. The filling may consist of one or more gases or vapours, or a mixture of a rare gas and a vapour such as sodium vapour may be used to produce an intensive light source.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL400764X | 1931-11-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB400764A true GB400764A (en) | 1933-11-02 |
Family
ID=19785889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26164/32A Expired GB400764A (en) | 1931-11-28 | 1932-09-20 | Improvements in electric discharge tubes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB400764A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1194053B (en) * | 1962-07-16 | 1965-06-03 | Berliner Gluehlampenwerk Veb | High and high pressure gas discharge lamp high power for alternating current |
-
1932
- 1932-09-20 GB GB26164/32A patent/GB400764A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1194053B (en) * | 1962-07-16 | 1965-06-03 | Berliner Gluehlampenwerk Veb | High and high pressure gas discharge lamp high power for alternating current |
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