GB344072A - Improvements in luminous electric discharge tubes - Google Patents
Improvements in luminous electric discharge tubesInfo
- Publication number
- GB344072A GB344072A GB37307/29A GB3730729A GB344072A GB 344072 A GB344072 A GB 344072A GB 37307/29 A GB37307/29 A GB 37307/29A GB 3730729 A GB3730729 A GB 3730729A GB 344072 A GB344072 A GB 344072A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- heating
- solenoid
- winding
- vapour
- 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
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
- H01J61/28—Means for producing, introducing, or replenishing gas or vapour during operation of the lamp
Landscapes
- Resistance Heating (AREA)
Abstract
344,072. Metallic - vapour lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent-Treuhand-Ges. fur Elektrische Gl³hlampen ; 11, Ehrenbergstrasse, Berlin.) Dec. 5, 1929, No. 37307. Convention date, Aug. 6. Addition to 343,053. [Class 39 (i).] In the glowdischarge tube of the parent Specification, the heating of the side tube, for maintaining constant the pressure of the vapour filling, is made dependent on the voltage across or the current intensity through the tube. A tube 1 is connected to the mains through a choke coil 5, and has a side tube 6 surrounded by a. heating winding 8 which is connected to the mains through a resistance 11. The energization of a, solenoid 18 causes a part of the resistance to be short-circuited by an armature 16 through contacts 14, 15. An increase of voltage across the tube. resulting from a reduction in the pressure of the filling, causes an increase in the current in the winding 8 and a subsequent increase in the vapour pressure. In a modification (Fig. 2, not shown), the heating of the side tube is made dependent on the current by connecting the solenoid 18 in series with the tube. In a further modification, an increased heating effect may be obtained by adapting the solenoid to short-circuit a number of turns of the winding 8. Specification 314,925, [Class 39 (i), Electric lamps, Arc &c.], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE344072X | 1929-08-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB344072A true GB344072A (en) | 1931-03-05 |
Family
ID=6249739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37307/29A Expired GB344072A (en) | 1929-08-06 | 1929-12-05 | Improvements in luminous electric discharge tubes |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR699889A (en) |
| GB (1) | GB344072A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH678128A5 (en) * | 1989-01-26 | 1991-07-31 | Asea Brown Boveri | High power ultraviolet lamp with particle density control - heats and cools mercury reservoir connected to discharge space above dielectric covered wire counter electrode |
-
1929
- 1929-12-05 GB GB37307/29A patent/GB344072A/en not_active Expired
-
1930
- 1930-07-31 FR FR699889D patent/FR699889A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH678128A5 (en) * | 1989-01-26 | 1991-07-31 | Asea Brown Boveri | High power ultraviolet lamp with particle density control - heats and cools mercury reservoir connected to discharge space above dielectric covered wire counter electrode |
Also Published As
| Publication number | Publication date |
|---|---|
| FR699889A (en) | 1931-02-20 |
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