JPS5586043A - Cathode frame structure for electron tube - Google Patents
Cathode frame structure for electron tubeInfo
- Publication number
- JPS5586043A JPS5586043A JP15882478A JP15882478A JPS5586043A JP S5586043 A JPS5586043 A JP S5586043A JP 15882478 A JP15882478 A JP 15882478A JP 15882478 A JP15882478 A JP 15882478A JP S5586043 A JPS5586043 A JP S5586043A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- empty
- empty hole
- coil
- frame structure
- 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.)
- Granted
Links
Landscapes
- Microwave Tubes (AREA)
- Solid Thermionic Cathode (AREA)
Abstract
PURPOSE: To prevent a surface carbonized layer from being deteriorated and make the life of cathode structure long by specifying the size and density of the empty hole in the carbonized layer which is formed on the surface of the coil-shaped heating filament in a W-ThO2 alloy, within a preset range.
CONSTITUTION: The coil-shaped heating filament 1 of cathode structure which is used in electron tubes such as magnetrons uses the W alloy containing ThO2 by 0.5W4.0 weight percentage as a base material. A bedded organization of W2C and W is formed on the surface. The initial size of the empty hole which constitutes a surface carbonized layer contributing to electron emission and which exists in the C layer is less than 5μm. For the empty hole density, the number of empty holes with a diameter of 3μm or more is less than 100 per mm2. Further, it is proper that the thickness of the W2C layer should by some 10W60μm.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15882478A JPS5586043A (en) | 1978-12-22 | 1978-12-22 | Cathode frame structure for electron tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15882478A JPS5586043A (en) | 1978-12-22 | 1978-12-22 | Cathode frame structure for electron tube |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5586043A true JPS5586043A (en) | 1980-06-28 |
JPS6238819B2 JPS6238819B2 (en) | 1987-08-19 |
Family
ID=15680174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15882478A Granted JPS5586043A (en) | 1978-12-22 | 1978-12-22 | Cathode frame structure for electron tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5586043A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3316609A1 (en) * | 1982-05-12 | 1983-11-17 | Varian Associates, Inc., 94303 Palo Alto, Calif. | GRID CONTROLLED POWER ELECTRON TUBES |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH041122U (en) * | 1990-04-12 | 1992-01-07 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5568047A (en) * | 1978-11-16 | 1980-05-22 | Toshiba Corp | Cathode structure for electron tube |
-
1978
- 1978-12-22 JP JP15882478A patent/JPS5586043A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5568047A (en) * | 1978-11-16 | 1980-05-22 | Toshiba Corp | Cathode structure for electron tube |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3316609A1 (en) * | 1982-05-12 | 1983-11-17 | Varian Associates, Inc., 94303 Palo Alto, Calif. | GRID CONTROLLED POWER ELECTRON TUBES |
Also Published As
Publication number | Publication date |
---|---|
JPS6238819B2 (en) | 1987-08-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2863083A (en) | X-ray genenrator tubes | |
JPS5652835A (en) | Impregnated cathode | |
US3539859A (en) | X-ray generator tube with graphite rotating anode | |
JPS5566819A (en) | Oxide cathode for electron tube | |
JPS5721054A (en) | Fluorescent display | |
JPS5586043A (en) | Cathode frame structure for electron tube | |
JPS5322353A (en) | Cathode structure of electron tube | |
JPS5611832A (en) | Directly heated cathode of electron tube and its manufacture | |
JPS56147346A (en) | Electron source | |
JPS5586044A (en) | Cathode frame structure for electron tube | |
JPS52109863A (en) | Fluorescent display tube | |
JPS53126859A (en) | Field radiation type electronic gun | |
JPS5568049A (en) | Cathode structure for electron tube | |
JPS55109353A (en) | Multi-digit fluorescent display tube | |
JPS57130334A (en) | Oxide cathode | |
ES445244A1 (en) | Fieldemission cathode | |
JP2000215785A (en) | Impregnated type cathode substrate, its manufacture and cathode body structure | |
JPS5568047A (en) | Cathode structure for electron tube | |
JPS5671253A (en) | Electronic source | |
JPS5492167A (en) | Electron gun | |
KR950004335A (en) | Oxide cathode | |
JPS5414438A (en) | Electrodeposit coating composition containing graphite | |
JPS52115684A (en) | X-ray tube | |
JPS5418679A (en) | Electron impact type ion source device | |
JPS52130273A (en) | Electron tube cathode |