GB669655A - Improvements in or relating to means for operating electric discharge lamps - Google Patents
Improvements in or relating to means for operating electric discharge lampsInfo
- Publication number
- GB669655A GB669655A GB1625149A GB1625149A GB669655A GB 669655 A GB669655 A GB 669655A GB 1625149 A GB1625149 A GB 1625149A GB 1625149 A GB1625149 A GB 1625149A GB 669655 A GB669655 A GB 669655A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transformer
- primary
- june
- supplied
- discharge lamps
- 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
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Abstract
669,655. Supply systems for space discharge lamps. EKCO-ENSIGN ELECTRIC, Ltd., and STICKLEY, W. A. June 19, 1950 [June 18, 1949], No. 16251/49. Class 38 (iv). A discharge lamp L is supplied from the secondary SW of a leaky transformer having that end of its primary PW connected to the phase supply terminal P also connected with the secondary at or near one end thereof, thereby providing a high open circuit starting voltage and adequate ballasting with a high power during running. A plurality of lamps, each with its own transformer, may be supplied from a common dimming resistance R by either connecting the primaries of the transformers in parallel, as shown, or in series, the connection between the primary and secondary windings in the latter arrangement, being nearer the phase supply lead. The transformer is preferably of the shell type adjustment of the leakage reactance being effected by varying the relative disposition of the primary and secondary windings spaced along the central limb. The transformer secondary may be tapped to provide filament heating or a starting switch may be used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1625149A GB669655A (en) | 1949-06-18 | 1949-06-18 | Improvements in or relating to means for operating electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1625149A GB669655A (en) | 1949-06-18 | 1949-06-18 | Improvements in or relating to means for operating electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB669655A true GB669655A (en) | 1952-04-09 |
Family
ID=10073940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1625149A Expired GB669655A (en) | 1949-06-18 | 1949-06-18 | Improvements in or relating to means for operating electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB669655A (en) |
-
1949
- 1949-06-18 GB GB1625149A patent/GB669655A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB669655A (en) | Improvements in or relating to means for operating electric discharge lamps | |
| GB659921A (en) | Improvements in or relating to starting and operating a plurality of serially connected discharge lamps | |
| GB674148A (en) | Improvements in or relating to means for controlling the circuit of a discharge lamp | |
| GB657072A (en) | Improvements in or relating to electric circuit arrangements for operating electric discharge lamps on a.c. | |
| GB848548A (en) | Starting circuit for electric discharge lamps | |
| US2348739A (en) | Gaseous discharge lamp circuit | |
| GB589571A (en) | Improvements in and relating to circuits for electric discharge lamps | |
| GB419173A (en) | An improved switching arrangement for lighting installations | |
| GB650992A (en) | Improvements in or relating to circuit arrangements for electric discharge lamps | |
| GB735421A (en) | Improvements in or relating to means for operating electrical discharge tubes or lamps in which two or more tubes or lamps are connected in series | |
| GB644547A (en) | Improvements in operating circuits for electric discharge lamps | |
| GB637894A (en) | Improvements relating to circuit arrangements for the operation and control of gas discharge lamps | |
| GB702836A (en) | Improvements in or relating to circuit arrangements for operating electric dischargelamps | |
| GB639295A (en) | Improvements in supply circuits for electric discharge tubes | |
| GB436469A (en) | Improvements in and relating to controlling apparatus for electric discharge lamps | |
| GB622799A (en) | Improvements relating to fluorescent electric lighting systems | |
| GB662977A (en) | Improvements in or relating to circuit arrangements for discharge lamps | |
| GB680362A (en) | Improvements relating to the operation of electric discharge lamps | |
| GB705081A (en) | Supply circuit for starting and operating discharge lamps having filamentary electrodes | |
| GB602858A (en) | Improvements in and relating to circuits for electric discharge lamps | |
| GB498107A (en) | Improvements in circuit arrangements for operating electric discharge devices | |
| GB611810A (en) | Improvements in or relating to the control of alternating currents in parallel-connected load-circuits | |
| GB616049A (en) | Improvements in circuits for electric discharge apparatus | |
| GB639441A (en) | Improvements in circuit arrangements for electric gas discharge lamps | |
| GB666470A (en) | Improvements in electric discharge lamp circuits |