JPS5598436A - Directly heated cathode structure and its manufacturing method - Google Patents
Directly heated cathode structure and its manufacturing methodInfo
- Publication number
- JPS5598436A JPS5598436A JP584079A JP584079A JPS5598436A JP S5598436 A JPS5598436 A JP S5598436A JP 584079 A JP584079 A JP 584079A JP 584079 A JP584079 A JP 584079A JP S5598436 A JPS5598436 A JP S5598436A
- Authority
- JP
- Japan
- Prior art keywords
- filament
- cathode structure
- interval
- fixed
- supports
- 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
Abstract
PURPOSE: To obtain a cathode structure in excellent precision to be able to maintain the interval between electron radiant material and first grid electrode in a desired size by providing a means which can adjust the interval of the electron radiant material on one side of filament supports.
CONSTITUTION: An insulating substrate 12 has a pair of filament supports 14, 15 held at a desired interval which are pierced and planted opposite to each other. A filament 16 is tensely installed over these supports 14, 15, in this case, one end of the filament 16 is fixed on the rod shaped support 14, the other end is fixed through a spring 17 located on a notch 13 onto the cylindrical support 15, the proximate part of this other end abuts on the tip of an adjustable rod 18 positioned inside the filament support 15. And the filament 16 has a substrate metal plate 19 fixed almost at its center, electron radiant material 20 is coated up on the substrate metal plate 19. This facilitates to obtain a cathode structure in excellent precision with less variations in cut-off of the electronic tube characteristics.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP584079A JPS5598436A (en) | 1979-01-22 | 1979-01-22 | Directly heated cathode structure and its manufacturing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP584079A JPS5598436A (en) | 1979-01-22 | 1979-01-22 | Directly heated cathode structure and its manufacturing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5598436A true JPS5598436A (en) | 1980-07-26 |
JPS6258099B2 JPS6258099B2 (en) | 1987-12-04 |
Family
ID=11622209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP584079A Granted JPS5598436A (en) | 1979-01-22 | 1979-01-22 | Directly heated cathode structure and its manufacturing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5598436A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0528444Y2 (en) * | 1987-07-07 | 1993-07-21 |
-
1979
- 1979-01-22 JP JP584079A patent/JPS5598436A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6258099B2 (en) | 1987-12-04 |
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