GB601720A - A starting device for electric fluorescent electric lamps - Google Patents
A starting device for electric fluorescent electric lampsInfo
- Publication number
- GB601720A GB601720A GB17183/46A GB1718346A GB601720A GB 601720 A GB601720 A GB 601720A GB 17183/46 A GB17183/46 A GB 17183/46A GB 1718346 A GB1718346 A GB 1718346A GB 601720 A GB601720 A GB 601720A
- Authority
- GB
- United Kingdom
- Prior art keywords
- winding
- transformer
- electric
- choke
- 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
601,720. Supply systems for discharge lamps. BRODRIBB, M. I. June 6, 1946, No. 17183. Convention date, June 12, 1945. [Class 38 (iv)] The filaments, F1, F2 of a hot cathode gasfilled fluorescent lamp are each supplied from a separate secondary winding S on a transformer the primary winding P of which is connected through a choke coil L1 to the line terminals, centre taps on the secondary windings being connected to the primary winding terminals. A second lamp may, with the aid of a third secondary winding, be connected as in Fig. 2, the centre tap of this winding being connected through a choke L2 and/or conductor C1 to a line terminal. A condenser may be connected in parallel with the primary winding so that resonance between choke and condenser is approached. The transformer may have a tertiary winding, with leakage reactances, aiding the primary voltage during starting. The transformer may be an autotransformer. In all arrangements the filament excitation is reduced on the striking of the lamp.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU601720X | 1945-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB601720A true GB601720A (en) | 1948-05-11 |
Family
ID=3745293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17183/46A Expired GB601720A (en) | 1945-06-12 | 1946-06-06 | A starting device for electric fluorescent electric lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB601720A (en) |
-
1946
- 1946-06-06 GB GB17183/46A patent/GB601720A/en not_active Expired
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