JPS5580237A - Directly-heated cathode structure - Google Patents
Directly-heated cathode structureInfo
- Publication number
- JPS5580237A JPS5580237A JP15196778A JP15196778A JPS5580237A JP S5580237 A JPS5580237 A JP S5580237A JP 15196778 A JP15196778 A JP 15196778A JP 15196778 A JP15196778 A JP 15196778A JP S5580237 A JPS5580237 A JP S5580237A
- Authority
- JP
- Japan
- Prior art keywords
- directly
- heated cathode
- cathode structure
- support member
- insulating support
- 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.)
- Pending
Links
Landscapes
- Solid Thermionic Cathode (AREA)
Abstract
PURPOSE: To simplify the structure as an electron gun and facilitate the assembling, by causing the first grid and the directly-heated cathode structure to be integral with each other.
CONSTITUTION: The directly-heated cathode structure 21 is conductively connected to a pair of electrically conductive support members 23, 24 provided through an insulating support member 22 consisting of ceramics or the like. A film-like filament 25, which is formed on the insulating support member 22 by evaporation or sintering, has at the central portion thereof a cathode 27 fastened thereto and consisting of a substrate metal member 28 on whose surface an oxide layer is provided. Since the filament 25 is formed on the surface of the insulating support member 22, a sufficiently high mechanical strength can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15196778A JPS5580237A (en) | 1978-12-11 | 1978-12-11 | Directly-heated cathode structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15196778A JPS5580237A (en) | 1978-12-11 | 1978-12-11 | Directly-heated cathode structure |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5580237A true JPS5580237A (en) | 1980-06-17 |
Family
ID=15530123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15196778A Pending JPS5580237A (en) | 1978-12-11 | 1978-12-11 | Directly-heated cathode structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5580237A (en) |
-
1978
- 1978-12-11 JP JP15196778A patent/JPS5580237A/en active Pending
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