CA1046132A - Dispenser cathode for a grid-controlled electron tube and method of manufacturing same - Google Patents

Dispenser cathode for a grid-controlled electron tube and method of manufacturing same

Info

Publication number
CA1046132A
CA1046132A CA237,768A CA237768A CA1046132A CA 1046132 A CA1046132 A CA 1046132A CA 237768 A CA237768 A CA 237768A CA 1046132 A CA1046132 A CA 1046132A
Authority
CA
Canada
Prior art keywords
cathode
grid
projections
surface regions
emission
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
CA237,768A
Other languages
English (en)
French (fr)
Other versions
CA237768S (en
Inventor
Reinhard Ziegler
Horst Seifert
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of CA1046132A publication Critical patent/CA1046132A/en
Expired 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
    • H01J1/20—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
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Microwave Tubes (AREA)
CA237,768A 1974-10-19 1975-10-16 Dispenser cathode for a grid-controlled electron tube and method of manufacturing same Expired CA1046132A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2449796A DE2449796C3 (de) 1974-10-19 1974-10-19 Vorratskathode für eine gittergesteuerte Elektronenröhre und Verfahren zu ihrer Herstellung

Publications (1)

Publication Number Publication Date
CA1046132A true CA1046132A (en) 1979-01-09

Family

ID=5928705

Family Applications (1)

Application Number Title Priority Date Filing Date
CA237,768A Expired CA1046132A (en) 1974-10-19 1975-10-16 Dispenser cathode for a grid-controlled electron tube and method of manufacturing same

Country Status (7)

Country Link
US (1) US4031425A (enExample)
JP (1) JPS563614B2 (enExample)
CA (1) CA1046132A (enExample)
DE (1) DE2449796C3 (enExample)
FR (1) FR2288384A1 (enExample)
GB (1) GB1525396A (enExample)
NL (1) NL7511842A (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1507544A (en) * 1975-12-29 1978-04-19 English Electric Valve Co Ltd Linear beam tubes
US4361781A (en) * 1980-05-12 1982-11-30 International Business Machines Corporation Multiple electron beam cathode ray tube
NL8105921A (nl) * 1981-12-31 1983-07-18 Philips Nv Televisiekamerabuis.
CH678671A5 (enExample) * 1989-08-22 1991-10-15 Asea Brown Boveri
KR950006088B1 (ko) * 1992-06-27 1995-06-08 주식회사엘지전자 함침형 음극 구조체의 함침 펠렛트 및 그 제조방법
WO2002091421A1 (fr) * 2001-05-01 2002-11-14 Nikon Corporation Appareil a faisceau d'electrons et son utilisation pour la fabrication

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782334A (en) * 1952-03-10 1957-02-19 Raytheon Mfg Co Velocity modulated electron discharge devices
US3119041A (en) * 1961-12-26 1964-01-21 Gen Electric Bipotential cathode
NL6504397A (enExample) * 1965-04-07 1966-10-10
US3377492A (en) * 1965-08-03 1968-04-09 Hughes Aircraft Co Flood gun for storage tubes having a dome-shaped cathode and dome-shaped grid electrodes
US3500110A (en) * 1967-08-23 1970-03-10 Raytheon Co Noncurrent intercepting electron beam control element
US3648096A (en) * 1968-09-26 1972-03-07 Gen Electric Electron beam focusing bipotential cathode
US3558967A (en) * 1969-06-16 1971-01-26 Varian Associates Linear beam tube with plural cathode beamlets providing a convergent electron stream
US3843902A (en) * 1972-08-24 1974-10-22 Varian Associates Gridded convergent flow electron gun
US3818260A (en) * 1973-03-05 1974-06-18 Sperry Rand Corp Electron gun with masked cathode and non-intercepting control grid

Also Published As

Publication number Publication date
DE2449796A1 (de) 1976-04-22
NL7511842A (nl) 1976-04-21
JPS5165558A (enExample) 1976-06-07
FR2288384B1 (enExample) 1980-07-18
JPS563614B2 (enExample) 1981-01-26
DE2449796C3 (de) 1980-03-06
FR2288384A1 (fr) 1976-05-14
US4031425A (en) 1977-06-21
GB1525396A (en) 1978-09-20
DE2449796B2 (de) 1979-05-23

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