GB420499A - Improvements in and relating to electric discharge devices - Google Patents
Improvements in and relating to electric discharge devicesInfo
- Publication number
- GB420499A GB420499A GB22194/34A GB2219434A GB420499A GB 420499 A GB420499 A GB 420499A GB 22194/34 A GB22194/34 A GB 22194/34A GB 2219434 A GB2219434 A GB 2219434A GB 420499 A GB420499 A GB 420499A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- chokes
- discharge
- coils
- deflect
- 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
Abstract
420,499. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen ; 11, Ehrenbergstrasse, Berlin) July 30, 1934, No. 22194. Convention date, Sept. 7, 1933. Drawings to Specification. [Class 39 (i)] A device having a discharge in a tubular envelope which does not fill the whole crosssection of the envelope, such as a high-pressure discharge device, and operated in a position inclined to the vertical has one or more coils in series with the device so arranged that the magnetic field of the coils tends to deflect the discharge in a direction opposed to that in which the convection currents tend to deflect it. The coils are preferably iron-cored chokes and may entirely replace the normal ballast impedance. In one form, four chokes are arranged in series with each other and with the tube and are mounted at equal intervals above the tube, which is horizontal. In a modification, the chokes are below the tube and are wound in the opposite direction. The tube may be a lamp with a metal vapour filling and self-heating thermionic electrodes. A ballast impedance, if used, is mounted remote from the tube.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE420499X | 1933-09-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB420499A true GB420499A (en) | 1934-12-03 |
Family
ID=6452067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22194/34A Expired GB420499A (en) | 1933-09-07 | 1934-07-30 | Improvements in and relating to electric discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB420499A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2153141A (en) * | 1983-12-29 | 1985-08-14 | Us Energy | Magnetic fluorescent lamp |
-
1934
- 1934-07-30 GB GB22194/34A patent/GB420499A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2153141A (en) * | 1983-12-29 | 1985-08-14 | Us Energy | Magnetic fluorescent lamp |
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