GB836611A - Improvements in or relating to starting and operating electric discharge lamps - Google Patents
Improvements in or relating to starting and operating electric discharge lampsInfo
- Publication number
- GB836611A GB836611A GB3417157A GB3417157A GB836611A GB 836611 A GB836611 A GB 836611A GB 3417157 A GB3417157 A GB 3417157A GB 3417157 A GB3417157 A GB 3417157A GB 836611 A GB836611 A GB 836611A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- starting
- circuit
- discharge lamps
- relay
- 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
- H05B41/18—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
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
836,611. Discharge lamp circuits. GENERAL ELECTRIC CO. Ltd. Oct. 17, 1958 [Nov. 1, 1957], No. 34171/57. Class 38 (4).. A starting circuit for operating two or more discharge lamps 1 from a D.C. supply comprises a relay 5, 8, 10 whose contacts 5 close the lamp heater circuit through a ballast resistor 4 and whose contacts 8 shunt a capacitor 13 in series with an air-gapped inductor 7 and a lamp 6, the opening of contacts 8 causing a high-voltage pulse to be applied to the lamp starting conductors 9. A reversing switch 12 connects the circuit to the supply and a further switch 11 controls the coil 10 of the relay which may be normally operated or normally released. Ballast resistor 4 may comprise a tungsten filament lamp. The starting conductors 9 consist of four lengths of stranded insulated wire spaced about # inch apart and ¢ inch away from the lamp. Constructional details of the inductor are described in the Specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3417157A GB836611A (en) | 1957-11-01 | 1957-11-01 | Improvements in or relating to starting and operating electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3417157A GB836611A (en) | 1957-11-01 | 1957-11-01 | Improvements in or relating to starting and operating electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB836611A true GB836611A (en) | 1960-06-09 |
Family
ID=10362272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3417157A Expired GB836611A (en) | 1957-11-01 | 1957-11-01 | Improvements in or relating to starting and operating electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB836611A (en) |
-
1957
- 1957-11-01 GB GB3417157A patent/GB836611A/en not_active Expired
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