GB867324A - Improvements in operating circuits for low-pressure electric discharge lamps - Google Patents
Improvements in operating circuits for low-pressure electric discharge lampsInfo
- Publication number
- GB867324A GB867324A GB3578756A GB3578756A GB867324A GB 867324 A GB867324 A GB 867324A GB 3578756 A GB3578756 A GB 3578756A GB 3578756 A GB3578756 A GB 3578756A GB 867324 A GB867324 A GB 867324A
- Authority
- GB
- United Kingdom
- Prior art keywords
- low
- electric discharge
- discharge lamps
- pressure electric
- operating circuits
- 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
- H05B41/2325—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 provided with pre-heating electrodes
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
867,324. Discharge lamp circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 22, 1957 [Nov. 22, 1956], No. 35787/56. Class 38 (4). A circuit for operating one or a series chain of low-pressure lamps 1 having indirectly heated electrodes 3 has the heaters 4 connected in series or parallel and fed from the output winding of a transformer 8, 9, the input winding being connected to an A.C. supply either directly or through part or all of a choke 5. The transformer may be of the single or double wound type.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3578756A GB867324A (en) | 1956-11-22 | 1956-11-22 | Improvements in operating circuits for low-pressure electric discharge lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3578756A GB867324A (en) | 1956-11-22 | 1956-11-22 | Improvements in operating circuits for low-pressure electric discharge lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB867324A true GB867324A (en) | 1961-05-03 |
Family
ID=10381549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3578756A Expired GB867324A (en) | 1956-11-22 | 1956-11-22 | Improvements in operating circuits for low-pressure electric discharge lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB867324A (en) |
-
1956
- 1956-11-22 GB GB3578756A patent/GB867324A/en not_active Expired
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