GB2268325B - Thermionic cathode structure - Google Patents
Thermionic cathode structureInfo
- Publication number
- GB2268325B GB2268325B GB9213946A GB9213946A GB2268325B GB 2268325 B GB2268325 B GB 2268325B GB 9213946 A GB9213946 A GB 9213946A GB 9213946 A GB9213946 A GB 9213946A GB 2268325 B GB2268325 B GB 2268325B
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode structure
- thermionic cathode
- thermionic
- cathode
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/14—Solid thermionic cathodes characterised by the material
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9213946A GB2268325B (en) | 1992-07-01 | 1992-07-01 | Thermionic cathode structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9213946A GB2268325B (en) | 1992-07-01 | 1992-07-01 | Thermionic cathode structure |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9213946D0 GB9213946D0 (en) | 1992-08-12 |
GB2268325A GB2268325A (en) | 1994-01-05 |
GB2268325B true GB2268325B (en) | 1996-01-03 |
Family
ID=10718003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9213946A Expired - Lifetime GB2268325B (en) | 1992-07-01 | 1992-07-01 | Thermionic cathode structure |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2268325B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5646474A (en) * | 1995-03-27 | 1997-07-08 | Wayne State University | Boron nitride cold cathode |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB820065A (en) * | 1954-10-22 | 1959-09-16 | Gen Electric | Improvements relating to cathode structures for electric discharge devices |
GB1039780A (en) * | 1964-05-21 | 1966-08-24 | Raytheon Co | Cathode structure |
GB1209078A (en) * | 1967-04-10 | 1970-10-14 | Siemens Ag | Improvements in or relating to thermionic dispenser cathodes |
GB1378733A (en) * | 1972-04-28 | 1974-12-27 | Tokyo Shibaura Electric Co | Indirectly heated type cathode devices |
US4268775A (en) * | 1978-03-13 | 1981-05-19 | Anthony J. Barraco | Cathode-heater assembly and support structure therefor |
EP0053867A1 (en) * | 1980-12-09 | 1982-06-16 | Thorn Emi-Varian Limited | Thermionic electron emitters and methods of making them |
EP0156454A1 (en) * | 1984-02-24 | 1985-10-02 | Thorn Emi-Varian Limited | Thermionic electron emitter |
EP0380205A1 (en) * | 1989-01-23 | 1990-08-01 | Varian Associates, Inc. | Fast warm-up cathode for high power vacuum tubes |
EP0389228A1 (en) * | 1989-03-24 | 1990-09-26 | Mitsubishi Denki Kabushiki Kaisha | High temperature operating element |
-
1992
- 1992-07-01 GB GB9213946A patent/GB2268325B/en not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB820065A (en) * | 1954-10-22 | 1959-09-16 | Gen Electric | Improvements relating to cathode structures for electric discharge devices |
GB1039780A (en) * | 1964-05-21 | 1966-08-24 | Raytheon Co | Cathode structure |
GB1209078A (en) * | 1967-04-10 | 1970-10-14 | Siemens Ag | Improvements in or relating to thermionic dispenser cathodes |
GB1378733A (en) * | 1972-04-28 | 1974-12-27 | Tokyo Shibaura Electric Co | Indirectly heated type cathode devices |
US4268775A (en) * | 1978-03-13 | 1981-05-19 | Anthony J. Barraco | Cathode-heater assembly and support structure therefor |
EP0053867A1 (en) * | 1980-12-09 | 1982-06-16 | Thorn Emi-Varian Limited | Thermionic electron emitters and methods of making them |
EP0156454A1 (en) * | 1984-02-24 | 1985-10-02 | Thorn Emi-Varian Limited | Thermionic electron emitter |
EP0380205A1 (en) * | 1989-01-23 | 1990-08-01 | Varian Associates, Inc. | Fast warm-up cathode for high power vacuum tubes |
EP0389228A1 (en) * | 1989-03-24 | 1990-09-26 | Mitsubishi Denki Kabushiki Kaisha | High temperature operating element |
Also Published As
Publication number | Publication date |
---|---|
GB2268325A (en) | 1994-01-05 |
GB9213946D0 (en) | 1992-08-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PE20 | Patent expired after termination of 20 years |
Expiry date: 20120630 |