JPS5648026A - Directly heated cathode structure - Google Patents

Directly heated cathode structure

Info

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
Application number
JP12314679A
Other languages
Japanese (ja)
Inventor
Shigekazu Shibata
Takeo Miki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12314679A priority Critical patent/JPS5648026A/en
Publication of JPS5648026A publication Critical patent/JPS5648026A/en
Pending legal-status Critical Current

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

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.
JP12314679A 1979-09-27 1979-09-27 Directly heated cathode structure Pending JPS5648026A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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