GB816302A - Improvements in operating circuits for electric discharge lamps - Google Patents
Improvements in operating circuits for electric discharge lampsInfo
- Publication number
- GB816302A GB816302A GB2867656A GB2867656A GB816302A GB 816302 A GB816302 A GB 816302A GB 2867656 A GB2867656 A GB 2867656A GB 2867656 A GB2867656 A GB 2867656A GB 816302 A GB816302 A GB 816302A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- electric discharge
- discharge lamps
- sept
- 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
- 239000003990 capacitor Substances 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 Arrangements For Discharge Lamps (AREA)
Abstract
816,302. Discharge lamp circuits. BRITISH THOMSON-HOUSTON CO. Ltd. Sept. 11, 1957 [Sept. 19, 1956; Nov. 14, 1956], Nos. 28676/56 and 34821/56. Class 38 (4). In a circuit for operating a fluorescent lamp, or plurality of lamps 1 in series, the lamp heaters 4, 4<SP>1</SP> are arranged in series with a power factor capacitor 8 across the supply 6. The discharge current flowing between separate electrodes 3, 3<SP>1</SP> is controlled by a choke 5. To assist starting a conductive strip may be secured to the internal or external wall of the lamp. The strip may be left unconnected, earthed, or connected to a selected point in the circuit. Specification 541,489 is referred to.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB816302A true GB816302A (en) | 1959-07-08 |
Family
ID=1741212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2867656A Expired GB816302A (en) | 1956-09-19 | Improvements in operating circuits for electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB816302A (en) |
-
1956
- 1956-09-19 GB GB2867656A patent/GB816302A/en not_active Expired
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