GB508412A - Improvements in high-pressure metal-vapour electric discharge lamps - Google Patents
Improvements in high-pressure metal-vapour electric discharge lampsInfo
- Publication number
- GB508412A GB508412A GB876738A GB876738A GB508412A GB 508412 A GB508412 A GB 508412A GB 876738 A GB876738 A GB 876738A GB 876738 A GB876738 A GB 876738A GB 508412 A GB508412 A GB 508412A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electric discharge
- discharge lamps
- pressure metal
- vapour electric
- vapour
- 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
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/92—Lamps with more than one main discharge path
-
- 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
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB876738A GB508412A (en) | 1938-03-22 | 1938-03-22 | Improvements in high-pressure metal-vapour electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB876738A GB508412A (en) | 1938-03-22 | 1938-03-22 | Improvements in high-pressure metal-vapour electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB508412A true GB508412A (en) | 1939-06-30 |
Family
ID=9858893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB876738A Expired GB508412A (en) | 1938-03-22 | 1938-03-22 | Improvements in high-pressure metal-vapour electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB508412A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2616589A1 (en) * | 1987-06-12 | 1988-12-16 | Cibie Projecteurs | Discharge lamp with two switchable arcs, for motor vehicle headlamp |
-
1938
- 1938-03-22 GB GB876738A patent/GB508412A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2616589A1 (en) * | 1987-06-12 | 1988-12-16 | Cibie Projecteurs | Discharge lamp with two switchable arcs, for motor vehicle headlamp |
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