GB626985A - Improvements in or relating to the starting or striking of fluorescent tubes - Google Patents
Improvements in or relating to the starting or striking of fluorescent tubesInfo
- Publication number
- GB626985A GB626985A GB3685046A GB3685046A GB626985A GB 626985 A GB626985 A GB 626985A GB 3685046 A GB3685046 A GB 3685046A GB 3685046 A GB3685046 A GB 3685046A GB 626985 A GB626985 A GB 626985A
- Authority
- GB
- United Kingdom
- Prior art keywords
- choke
- winding
- transformer
- starting
- lamp
- 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
626,985. Supply systems for space-discharge lamps. CONCORDIA ELECTRIC SAFETY LAMP CO., Ltd., and STEADMAN, C. H. Dec. 13, 1946, No. 36850. [Class 38 (iv)] A circuit arrangement which enables a fluorescent lamp to be rapidly started with partially heated electrodes and provides sufficient voltage to effect cold starting in the event of broken heater filaments comprises a non-leaky auto-transformer 8 having its primary winding 15-25 connected in series with a choke 9 across the supply mains 12, 13 and the fluorescent lamp 1 having a further choke 7 in series therewith connected across the primary and secondary windings of the transformer and its choke 9 whilst the electrode heaters 6, 5 are supplied respectively from an auxiliary winding 10 and a tapping 14 on the transformer secondary winding and a capacitor 11 is connected across the lamp and its choke 7 to provide partial resonance at starting. The two choke coils may be wound on a common core and comprise a tapped winding so wound that the respective fluxes act in the same direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3685046A GB626985A (en) | 1946-12-13 | 1946-12-13 | Improvements in or relating to the starting or striking of fluorescent tubes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3685046A GB626985A (en) | 1946-12-13 | 1946-12-13 | Improvements in or relating to the starting or striking of fluorescent tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB626985A true GB626985A (en) | 1949-07-25 |
Family
ID=10391684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3685046A Expired GB626985A (en) | 1946-12-13 | 1946-12-13 | Improvements in or relating to the starting or striking of fluorescent tubes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB626985A (en) |
-
1946
- 1946-12-13 GB GB3685046A patent/GB626985A/en not_active Expired
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