GB414278A - Improvements in and relating to light flashing apparatus using electric discharge lamps - Google Patents
Improvements in and relating to light flashing apparatus using electric discharge lampsInfo
- Publication number
- GB414278A GB414278A GB34826/33A GB3482633A GB414278A GB 414278 A GB414278 A GB 414278A GB 34826/33 A GB34826/33 A GB 34826/33A GB 3482633 A GB3482633 A GB 3482633A GB 414278 A GB414278 A GB 414278A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reactance
- circuit
- resistance
- starting
- current
- 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
- 238000004804 winding Methods 0.000 abstract 3
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- 238000009738 saturating Methods 0.000 abstract 1
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
- H05B41/22—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
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
414,278. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Suits, C. G. ; 1740, Union Street, Schenectady, New York, U.S.A.) Dec. 11, 1933, No. 34826. Convention date, Dec. 23,1932. [Class 39 (i).] In a flash lamp supplied from an alternating- current source and having starting anodes 8 the control is entirely electrical, the discharge being started at intervals less than the frequency of the source. A non-linear pulsating circuit 10 comprising the condenser 11, resistance 12 and reactance 13 is connected across the supply circuit the core for the reactance being saturated by the direct-current winding 14. The starting anodes are connected through the resistances 18 to the circuit 10. Owing to the increase in resistance in the reactance on flow of current, the starting circuit can be energized once or ten times per second depending on resistance values. The reactance may comprise two windings 20, 21, Fig. 2, in parallel wound on separate legs of a core the single saturating winding 22 surrounding both legs ; or separate reactances in series may be used.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US414278XA | 1932-12-23 | 1932-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB414278A true GB414278A (en) | 1934-08-02 |
Family
ID=21916458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34826/33A Expired GB414278A (en) | 1932-12-23 | 1933-12-11 | Improvements in and relating to light flashing apparatus using electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB414278A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2168861A (en) * | 1984-12-21 | 1986-06-25 | Gerger Scient Instr Company Th | Flashing lamp unit |
-
1933
- 1933-12-11 GB GB34826/33A patent/GB414278A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2168861A (en) * | 1984-12-21 | 1986-06-25 | Gerger Scient Instr Company Th | Flashing lamp unit |
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