CA946908A - Direct heating cathode - Google Patents
Direct heating cathodeInfo
- Publication number
- CA946908A CA946908A CA138,652A CA138652A CA946908A CA 946908 A CA946908 A CA 946908A CA 138652 A CA138652 A CA 138652A CA 946908 A CA946908 A CA 946908A
- Authority
- CA
- Canada
- Prior art keywords
- direct heating
- heating cathode
- cathode
- direct
- heating
- 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
- 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
- H01J1/15—Cathodes heated directly by an electric current
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012771 | 1971-04-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA946908A true CA946908A (en) | 1974-05-07 |
Family
ID=12018443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA138,652A Expired CA946908A (en) | 1971-04-02 | 1972-03-30 | Direct heating cathode |
Country Status (4)
Country | Link |
---|---|
US (1) | US3783330A (en) |
CA (1) | CA946908A (en) |
DE (1) | DE2215784C3 (en) |
GB (1) | GB1343012A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2723900C2 (en) * | 1977-05-26 | 1982-10-14 | Central'nyj naučno-issledovatel'skij institut technologii mašinostroenija, Moskva | Indirectly heated, thermally emitting cathode block for electron guns |
GB2147732B (en) * | 1983-10-07 | 1987-11-04 | English Electric Valve Co Ltd | Improvements in or relating to travelling wave tubes |
GB2192751B (en) * | 1986-07-14 | 1991-02-13 | Denki Kagaku Kogyo Kk | Method of making a thermionic cathode structure. |
EP0641007A3 (en) * | 1993-08-31 | 1995-06-21 | Samsung Display Devices Co Ltd | Direct-heating-type dispenser cathode structure. |
DE10012203C1 (en) * | 2000-03-13 | 2001-07-26 | Siemens Ag | Flat thermionic emitter that prevents adverse effects of thermal stresses on emitter distortion - has devices that compensate for deformations caused by heating emission surface and hold transition points between emitter and legs substantially stress-free |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2416566A (en) * | 1942-08-01 | 1947-02-25 | Gen Electric | Cathode |
DE1036419B (en) * | 1954-07-24 | 1958-08-14 | Siemens Ag | Electron source with flat cathode for electron beam devices working on the pump |
GB1102567A (en) * | 1964-06-30 | 1968-02-07 | Wickman Wimet Ltd | Toolholders for use with detachable cutting inserts |
US3384776A (en) * | 1965-08-17 | 1968-05-21 | Gen Electric | Thermionic tube having a novel electrode support arrangement |
US3541382A (en) * | 1967-12-11 | 1970-11-17 | Tokyo Shibaura Electric Co | Direct heated cathode member for an electron tube |
JPS464029Y1 (en) * | 1968-05-28 | 1971-02-12 |
-
1972
- 1972-03-28 US US00238894A patent/US3783330A/en not_active Expired - Lifetime
- 1972-03-30 DE DE2215784A patent/DE2215784C3/en not_active Expired
- 1972-03-30 CA CA138,652A patent/CA946908A/en not_active Expired
- 1972-04-04 GB GB1537672A patent/GB1343012A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2215784C3 (en) | 1982-03-04 |
GB1343012A (en) | 1974-01-10 |
US3783330A (en) | 1974-01-01 |
DE2215784A1 (en) | 1972-10-26 |
DE2215784B2 (en) | 1974-05-30 |
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