GB349859A - Improvements in or relating to electric discharge tubes, discharge lamps, or the like - Google Patents
Improvements in or relating to electric discharge tubes, discharge lamps, or the likeInfo
- Publication number
- GB349859A GB349859A GB25698/30A GB2569830A GB349859A GB 349859 A GB349859 A GB 349859A GB 25698/30 A GB25698/30 A GB 25698/30A GB 2569830 A GB2569830 A GB 2569830A GB 349859 A GB349859 A GB 349859A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- frequency current
- circuit
- choke
- starting
- 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
- H05B41/02—Details
- H05B41/04—Starting switches
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
349,859. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent-Treuhand-Ges. f³r Elektrische Gluhlampen ; 11, Ehrenbergstrasse, Berlin.) Aug. 28, 1930, No. 25698. Convention date, Aug. 29, 1929. [Class 39 (i).] A device for ensuring starting of luminous electric discharge lamps, tubes and the like by means of high frequency current comprises a source of high - frequency current 14, a choke coil 18 for preventing leakage of high frequency current into the main supply circuit 4 . . 7, this choke being substantially non-capacitative and underdimensioned for the load it has to carry, and switching means 8, 10, 11 for connecting the choke in circuit only during starting. The choke coil 18 is connected in circuit on the depression of the switch 9, 10, 11 and is short-circuited by the contacts 9, 11, 8 during normal operation of the lamp. The high-frequency apparatus 14 which comprises an inductive interrupter, an oscillatory circuit and a step-up transformer is set into operation on the switch 9, 11 being depressed so as to connect it across the supply terminals 6, 7 and high-frequency voltage is applied across the electrodes 2, 3 of the lamp 1. At the same time the coil 18 prevents leakage of high-frequency current into the main supply. When the tube has struck the switch 9, 11 is released and normal operation takes place, the supply terminals being connected to the electrodes 2, 3 through the switch 9, 11 and a resistance 16 respectively. The device may also be used for the starting of tungsten arc lamps.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE349859X | 1929-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB349859A true GB349859A (en) | 1931-06-04 |
Family
ID=6259017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25698/30A Expired GB349859A (en) | 1929-08-29 | 1930-08-28 | Improvements in or relating to electric discharge tubes, discharge lamps, or the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB349859A (en) |
-
1930
- 1930-08-28 GB GB25698/30A patent/GB349859A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2358810A (en) | Apparatus for starting and controlling discharge devices | |
| US2552111A (en) | Energizing circuit for fluorescent lamps in series | |
| US1844375A (en) | Gaseous electric discharge device | |
| US2330312A (en) | Starting and operating fluorescent and mercury arc lamps | |
| GB349859A (en) | Improvements in or relating to electric discharge tubes, discharge lamps, or the like | |
| US2010849A (en) | Gaseous electric discharge lamp device | |
| US2523021A (en) | Starting arrangement for electric discharge devices | |
| GB499280A (en) | Improvements in and relating to electric valve circuits | |
| US2018856A (en) | Gas arc lamp | |
| US2673943A (en) | Discharge lamp flashing circuit | |
| GB365471A (en) | Improvements in or relating to luminous electric discharge tubes | |
| US2586400A (en) | Starting and operating circuits and devices for electric discharge devices | |
| US2456860A (en) | Electric discharge apparatus | |
| GB369824A (en) | Improvements in luminous electric discharge tubes | |
| GB665103A (en) | Improvements in and relating to electrical circuits for use with discharge devices | |
| US2056649A (en) | Gaseous electric discharge lamp device | |
| GB762489A (en) | Improvements in or relating to electric circuit arrangements for starting and operating at least one low pressure electric discharge lamp | |
| GB800532A (en) | Improvements in or relating to electric circuit arrangements for operating low pressure electric discharge lamps and incorporating starting means for the lamps | |
| GB674148A (en) | Improvements in or relating to means for controlling the circuit of a discharge lamp | |
| GB636002A (en) | Improvements in and relating to circuits for electric discharge tubes | |
| GB652426A (en) | Improvements in apparatus for operating electrical discharge devices | |
| GB541489A (en) | Improvements in and relating to electric discharge apparatus | |
| GB364393A (en) | Improvements in or relating to means for igniting mercury arc lamps and similar discharge devices | |
| GB614509A (en) | Improvements in and relating to starting arrangements for electric discharge devices | |
| GB830202A (en) | Improvements in or relating to circuit arrangem operating electric lamps |