GB527185A - Improvements in operating systems for high-pressure metalvapour electric discharge lamps - Google Patents
Improvements in operating systems for high-pressure metalvapour electric discharge lampsInfo
- Publication number
- GB527185A GB527185A GB1035239A GB1035239A GB527185A GB 527185 A GB527185 A GB 527185A GB 1035239 A GB1035239 A GB 1035239A GB 1035239 A GB1035239 A GB 1035239A GB 527185 A GB527185 A GB 527185A
- Authority
- GB
- United Kingdom
- Prior art keywords
- discharge lamps
- lamp
- metalvapour
- pressure
- operating systems
- 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
- H05B41/231—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 high-pressure lamps
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
527,185. Supply circuits for discharge lamps. GENERAL ELECTRIC CO., Ltd., and FRANCIS, V. J. April 3, 1939, No, 10352. [Class 38 (iv)] A high pressure metal vapour lamp 1 is connected to the secondary 2 of a stray field transformer 3 whose primary is connected to a mains supply 4; at starting the impedence of the total circuit connecting the lamp to the source is lowered by connecting a choke 7 by means of the switch 8 between the lamp and source the connection being broken during normal operation. If a close wound transformer with chokes in series with the primary and/or secondary is used instead of the stray field transformer a similar starting auxiliary circuit is connected. Specifications 493,634 and 528,474 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1035239A GB527185A (en) | 1939-04-03 | 1939-04-03 | Improvements in operating systems for high-pressure metalvapour electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1035239A GB527185A (en) | 1939-04-03 | 1939-04-03 | Improvements in operating systems for high-pressure metalvapour electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB527185A true GB527185A (en) | 1940-10-03 |
Family
ID=9966260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1035239A Expired GB527185A (en) | 1939-04-03 | 1939-04-03 | Improvements in operating systems for high-pressure metalvapour electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB527185A (en) |
-
1939
- 1939-04-03 GB GB1035239A patent/GB527185A/en not_active Expired
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