JPS5648026A - Directly heated cathode structure - Google Patents
Directly heated cathode structureInfo
- Publication number
- JPS5648026A JPS5648026A JP12314679A JP12314679A JPS5648026A JP S5648026 A JPS5648026 A JP S5648026A JP 12314679 A JP12314679 A JP 12314679A JP 12314679 A JP12314679 A JP 12314679A JP S5648026 A JPS5648026 A JP S5648026A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- supports
- metallic
- filament
- 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
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
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
- Solid Thermionic Cathode (AREA)
Abstract
PURPOSE:To maintain the distance between a cathode and the grid electrode No.1 at a constant interval by supporting a base metal plate by means of two metallic wires thereby eliminating the variation of the position of said plate secured to a filament. CONSTITUTION:Supports 2, 3 are provided on an insulated substrate 1 while an opening 4 and a notch 5 are provided in said substrate 1 for the purpose of securing supports 2, 3. On the other hand two wires having high melting point and welded ends are stretched between the top of the support 2 and an free end of a spring 7 provided at the side of the support 3. While two openings 12, 13 are provided between the supports 2, 3 for the substrate 1. Furthermore both sides 14a, 14b of the portion welded to a metallic wire of a filament 14 is bent to the rear of a face coated with an electron emissive material of a base metallic plate 9 and extends while bending slightly to connect the end with a supporting section projecting from the substrate 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12314679A JPS5648026A (en) | 1979-09-27 | 1979-09-27 | Directly heated cathode structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12314679A JPS5648026A (en) | 1979-09-27 | 1979-09-27 | Directly heated cathode structure |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5648026A true JPS5648026A (en) | 1981-05-01 |
Family
ID=14853323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12314679A Pending JPS5648026A (en) | 1979-09-27 | 1979-09-27 | Directly heated cathode structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5648026A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH058142U (en) * | 1991-05-16 | 1993-02-05 | 大同特殊鋼株式会社 | Vacuum furnace valve structure |
-
1979
- 1979-09-27 JP JP12314679A patent/JPS5648026A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH058142U (en) * | 1991-05-16 | 1993-02-05 | 大同特殊鋼株式会社 | Vacuum furnace valve structure |
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