GB498107A - Improvements in circuit arrangements for operating electric discharge devices - Google Patents
Improvements in circuit arrangements for operating electric discharge devicesInfo
- Publication number
- GB498107A GB498107A GB3609737A GB3609737A GB498107A GB 498107 A GB498107 A GB 498107A GB 3609737 A GB3609737 A GB 3609737A GB 3609737 A GB3609737 A GB 3609737A GB 498107 A GB498107 A GB 498107A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condenser
- electrodes
- electric discharge
- transformers
- series
- 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
498,107. Supply systems for discharge lamps. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. fiir Elektrische Gl³hlampen) Dec. 30, 1937, No. 36097. [Class 38 (iv)] [Also in Group XL] An electric discharge device, e.g. a lowpressure mercury-vapour lamp 1, having thermionic electrodes 2 heated independently of the discharge is shunted by a condenser 8 and connected to A.C. mains through a choke 6, the condenser circuit including in series the primary winding 9 of at least one transformer 4, the secondary of which supplies heating current to one of the electrodes 2. By this means the condenser 8 which is used for starting may be kept in circuit and be available for re-starting whilst the current in the condenser circuit during normal running is limited. Two transformers 4 may be provided, one for each electrode 2. The transformers may have a common core. The inductance 6 may be in two parts arranged in series at opposite ends of the tube 1 and the electrodes 2 may be indirectly heated..
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3609737A GB498107A (en) | 1937-12-30 | 1937-12-30 | Improvements in circuit arrangements for operating electric discharge devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3609737A GB498107A (en) | 1937-12-30 | 1937-12-30 | Improvements in circuit arrangements for operating electric discharge devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB498107A true GB498107A (en) | 1939-01-03 |
Family
ID=10384916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3609737A Expired GB498107A (en) | 1937-12-30 | 1937-12-30 | Improvements in circuit arrangements for operating electric discharge devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB498107A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2099263A1 (en) * | 2008-03-05 | 2009-09-09 | Koito Manufacturing Co., Ltd | Discharge lamp lighting circuit |
US8314573B2 (en) | 2008-10-30 | 2012-11-20 | Koito Manufacturing Co., Ltd. | Discharge lamp lighting circuit |
-
1937
- 1937-12-30 GB GB3609737A patent/GB498107A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2099263A1 (en) * | 2008-03-05 | 2009-09-09 | Koito Manufacturing Co., Ltd | Discharge lamp lighting circuit |
US8120264B2 (en) | 2008-03-05 | 2012-02-21 | Koito Manufacturing Co., Ltd. | Discharge lamp lighting circuit |
CN101527996B (en) * | 2008-03-05 | 2012-11-21 | 株式会社小糸制作所 | Discharge lamp lighting circuit |
US8314573B2 (en) | 2008-10-30 | 2012-11-20 | Koito Manufacturing Co., Ltd. | Discharge lamp lighting circuit |
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