GB640156A - Improvements in circuit arrangements for operating electric discharge lamps - Google Patents
Improvements in circuit arrangements for operating electric discharge lampsInfo
- Publication number
- GB640156A GB640156A GB584247A GB584247A GB640156A GB 640156 A GB640156 A GB 640156A GB 584247 A GB584247 A GB 584247A GB 584247 A GB584247 A GB 584247A GB 640156 A GB640156 A GB 640156A
- Authority
- GB
- United Kingdom
- Prior art keywords
- auxiliary electrode
- cathode
- source
- gaps
- anode
- 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
- H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
- H05B41/34—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp to provide a sequence of flashes
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
640,156. Control systems for discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd., and BEESON, E. J. G. Feb. 28, 1947, No. 5842. [Class 38 (iv)] [Also in Group XL (a)] A compact-source or H.P.M.U. lamp supplied from a D.C. source is started by a high-voltage surge applied between two electrodes of the lamp of which one is the anode A and the other may be an auxiliary electrode AE near the cathode K, the surge being obtained by the discharge of a condenser C, which has been charged to a materially higher voltage than that of the source, through two spark-gaps G1, G2. As shown, the anode and auxiliary electrode are each connected to the positive pole of the source through a resistance and highfrequency choke and the condenser is charged by the transformer T when a switch S is opened, an oscillatory discharge occurring when the condenser voltage becomes sufficient to break down the gaps and the space between auxiliary electrode and cathode. In Fig. 2 (not shown) the respective spark-gaps are connected to anode and cathode and the auxiliary electrode is dispensed with. The transformer windings are centre-tapped and interconnected as shown in Fig. 1. The arrangement may be used also when a two-wattage simmering arc is maintained in the lamp; the auxiliary electrode carrying this arc is then disposed as far behind the cathode as possible to minimize the light collected therefrom by the optical system. Specification 545,388, [Group XL (a)], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB584247A GB640156A (en) | 1947-02-28 | 1947-02-28 | Improvements in circuit arrangements for operating electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB584247A GB640156A (en) | 1947-02-28 | 1947-02-28 | Improvements in circuit arrangements for operating electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB640156A true GB640156A (en) | 1950-07-12 |
Family
ID=9803646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB584247A Expired GB640156A (en) | 1947-02-28 | 1947-02-28 | Improvements in circuit arrangements for operating electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB640156A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006108407A1 (en) * | 2005-04-14 | 2006-10-19 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Starter auxiliary electrode starting device with an arc gap |
-
1947
- 1947-02-28 GB GB584247A patent/GB640156A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006108407A1 (en) * | 2005-04-14 | 2006-10-19 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Starter auxiliary electrode starting device with an arc gap |
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