GB1281913A - A structure for providing controllable electron emission - Google Patents

A structure for providing controllable electron emission

Info

Publication number
GB1281913A
GB1281913A GB44294/69A GB4429469A GB1281913A GB 1281913 A GB1281913 A GB 1281913A GB 44294/69 A GB44294/69 A GB 44294/69A GB 4429469 A GB4429469 A GB 4429469A GB 1281913 A GB1281913 A GB 1281913A
Authority
GB
United Kingdom
Prior art keywords
cathode
control electrode
coating
sept
coated
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.)
Expired
Application number
GB44294/69A
Other languages
English (en)
Inventor
James Emory Beggs
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1281913A publication Critical patent/GB1281913A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/36—Tubes with flat electrodes, e.g. disc electrode
    • 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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • 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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/027—Construction of the gun or parts thereof

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)
  • Solid Thermionic Cathode (AREA)
  • Microwave Tubes (AREA)
GB44294/69A 1968-09-26 1969-09-08 A structure for providing controllable electron emission Expired GB1281913A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76279768A 1968-09-26 1968-09-26

Publications (1)

Publication Number Publication Date
GB1281913A true GB1281913A (en) 1972-07-19

Family

ID=25066056

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44294/69A Expired GB1281913A (en) 1968-09-26 1969-09-08 A structure for providing controllable electron emission

Country Status (5)

Country Link
US (1) US3648096A (https=)
DE (1) DE1948820A1 (https=)
FR (1) FR2063018A1 (https=)
GB (1) GB1281913A (https=)
NL (1) NL6914678A (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004424A1 (en) * 1978-03-23 1979-10-03 Thorn Emi-Varian Limited Thermionic cathode

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2449796C3 (de) * 1974-10-19 1980-03-06 Philips Patentverwaltung Gmbh, 2000 Hamburg Vorratskathode für eine gittergesteuerte Elektronenröhre und Verfahren zu ihrer Herstellung
US3967150A (en) * 1975-01-31 1976-06-29 Varian Associates Grid controlled electron source and method of making same
US4263528A (en) * 1978-05-03 1981-04-21 Varian Associates, Inc. Grid coating for thermionic electron emission suppression
US4250428A (en) * 1979-05-09 1981-02-10 The United States Of America As Represented By The Secretary Of The Army Bonded cathode and electrode structure with layered insulation, and method of manufacture
FR2469792A1 (fr) * 1979-11-09 1981-05-22 Thomson Csf Cathode thermo-ionique, son procede de fabrication et tube electronique incorporant une telle cathode
RU2290713C1 (ru) * 2005-06-23 2006-12-27 Государственное унитарное предприятие "Всероссийский электротехнический институт им. В.И. Ленина" Пучково-плазменный свч-прибор

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1632135A (en) * 1920-04-01 1927-06-14 Western Electric Co Electrode structure for electron-discharge devices
NL6504397A (https=) * 1965-04-07 1966-10-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004424A1 (en) * 1978-03-23 1979-10-03 Thorn Emi-Varian Limited Thermionic cathode

Also Published As

Publication number Publication date
FR2063018A1 (https=) 1971-07-02
NL6914678A (https=) 1970-04-01
US3648096A (en) 1972-03-07
DE1948820A1 (de) 1970-04-02

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed