GB527497A - Improvements in and relating to electric discharge apparatus - Google Patents
Improvements in and relating to electric discharge apparatusInfo
- Publication number
- GB527497A GB527497A GB8978/39A GB897839A GB527497A GB 527497 A GB527497 A GB 527497A GB 8978/39 A GB8978/39 A GB 8978/39A GB 897839 A GB897839 A GB 897839A GB 527497 A GB527497 A GB 527497A
- Authority
- GB
- United Kingdom
- Prior art keywords
- series
- inductance
- lamps
- lamp
- relating
- 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
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
527,497. Supply systems for discharge lamps. BRITISH THOMSON - HOUSTON CO., Ltd. March 21, 1939, No. 8978. Convention date, March 22,1938. [Class 38 (iv)] [Also in Group XL] A discharge lamp 1 is supplied from an A.C. source through an inductance 7 and condenser 8 in series, a second inductance 9 being in shunt to the lamp. The inductance 9 may be in series with the electrodes to provide a heating circuit at starting ; it may form the primary of a transformer for heating the electrodes. Two lamps 1, 1<SP>1</SP> may be arranged in series with a single inductance and condenser in series in the supply circuit, but independent inductances 19. 19<SP>1</SP> in parallel with the lamps. The lamp may have a fluorescent coating. Reference has been directed by the Comptroller to Specifications 344,439 and 357,492.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US527497XA | 1938-03-22 | 1938-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB527497A true GB527497A (en) | 1940-10-10 |
Family
ID=21979657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8978/39A Expired GB527497A (en) | 1938-03-22 | 1939-03-21 | Improvements in and relating to electric discharge apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB527497A (en) |
-
1939
- 1939-03-21 GB GB8978/39A patent/GB527497A/en not_active Expired
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