GB527796A - Improvements in high-pressure metal-vapour electric discharge devices - Google Patents
Improvements in high-pressure metal-vapour electric discharge devicesInfo
- Publication number
- GB527796A GB527796A GB1192039D GB1192039D GB527796A GB 527796 A GB527796 A GB 527796A GB 1192039 D GB1192039 D GB 1192039D GB 1192039 D GB1192039 D GB 1192039D GB 527796 A GB527796 A GB 527796A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- distance
- pressure
- pressure metal
- atmospheres
- 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
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/04—Electrodes; Screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0048—Tubes with a main cathode
- H01J2893/0056—Parts inside tubes brought to incandescence by the discharge
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
527,796. Discharge lamps. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand Ges. fur Elektrische Gluhlampen). April 20, 1939, No. 11920. [Class 39 (i)] A high-pressure metal vapour lamp, the partial pressure of the mercury in which is not less during operation than three atmospheres, contains a refractory body to be heated to incandescence by the discharge, which body consists of a tube the axis of which is substantially in the straight line joining the electrodes and the diameter of which is substantially greater than the distance between the electrodes ; the ratio of the power absorbed in watts to the distance between the electrodes in centimetres is not less than 100. Preferably this ratio is over 300 and the pressure is over 30 atmospheres, the distance between the electrodes being between 2 and 5 mm. Fig. 1 shows such a lamp enclosed in an outer jacket 2 which may be coated with fluorescent material. One of the electrodes 3 is vertically above the other and the incandescent tube 5 is between them, in other forms it surrounds the end of the upper electrode and may be attached thereto.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB11920/39A GB527790A (en) | 1938-09-26 | 1939-04-20 | Musical instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB527796A true GB527796A (en) | 1940-10-16 |
Family
ID=9995053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1192039D Expired GB527796A (en) | 1939-04-20 | 1939-04-20 | Improvements in high-pressure metal-vapour electric discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB527796A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2596697A (en) * | 1947-12-08 | 1952-05-13 | Krefft Hermann Eduard | Electrical discharge lamp |
-
1939
- 1939-04-20 GB GB1192039D patent/GB527796A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2596697A (en) * | 1947-12-08 | 1952-05-13 | Krefft Hermann Eduard | Electrical discharge lamp |
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