GB493706A - Improvements relating to high-pressure electrical discharge tubes - Google Patents
Improvements relating to high-pressure electrical discharge tubesInfo
- Publication number
- GB493706A GB493706A GB1018837A GB1018837A GB493706A GB 493706 A GB493706 A GB 493706A GB 1018837 A GB1018837 A GB 1018837A GB 1018837 A GB1018837 A GB 1018837A GB 493706 A GB493706 A GB 493706A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heater
- coil
- april
- spiral
- starting
- 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
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/96—Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope, e.g. for simulating daylight
-
- 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
- H05B41/18—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 a starting switch
- H05B41/19—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 a starting switch for lamps having an auxiliary starting electrode
Landscapes
- Discharge Lamp (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE819967X | 1936-04-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB493706A true GB493706A (en) | 1938-10-10 |
Family
ID=6544604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1018837A Expired GB493706A (en) | 1936-04-09 | 1937-04-09 | Improvements relating to high-pressure electrical discharge tubes |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR819967A (xx) |
| GB (1) | GB493706A (xx) |
| NL (1) | NL49352C (xx) |
-
1937
- 1937-03-30 FR FR819967D patent/FR819967A/fr not_active Expired
- 1937-04-07 NL NL81983A patent/NL49352C/xx active
- 1937-04-09 GB GB1018837A patent/GB493706A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL49352C (xx) | 1940-10-15 |
| FR819967A (fr) | 1937-10-29 |
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