DE1089483B - Verfahren zur Herstellung einer Kathode fuer eine elektrische Entladungsroehre - Google Patents

Verfahren zur Herstellung einer Kathode fuer eine elektrische Entladungsroehre

Info

Publication number
DE1089483B
DE1089483B DEN6805A DEN0006805A DE1089483B DE 1089483 B DE1089483 B DE 1089483B DE N6805 A DEN6805 A DE N6805A DE N0006805 A DEN0006805 A DE N0006805A DE 1089483 B DE1089483 B DE 1089483B
Authority
DE
Germany
Prior art keywords
cathode
alkaline earth
porous
molybdenum
tube
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
DEN6805A
Other languages
German (de)
English (en)
Inventor
Roberto Levi
Ray Collier Hughes
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
Publication of DE1089483B publication Critical patent/DE1089483B/de
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H01J9/042—Manufacture, activation of the emissive part
    • H01J9/047—Cathodes having impregnated bodies
    • 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
    • H01J1/14—Solid thermionic cathodes characterised by the material
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Powder Metallurgy (AREA)
  • Discharge Lamp (AREA)
DEN6805A 1952-02-27 1953-02-25 Verfahren zur Herstellung einer Kathode fuer eine elektrische Entladungsroehre Pending DE1089483B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US273607A US2700000A (en) 1952-02-27 1952-02-27 Thermionic cathode and method of manufacturing same

Publications (1)

Publication Number Publication Date
DE1089483B true DE1089483B (de) 1960-09-22

Family

ID=23044673

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN6805A Pending DE1089483B (de) 1952-02-27 1953-02-25 Verfahren zur Herstellung einer Kathode fuer eine elektrische Entladungsroehre

Country Status (9)

Country Link
US (1) US2700000A (it)
BE (1) BE517981A (it)
CH (1) CH318053A (it)
DE (1) DE1089483B (it)
ES (2) ES207960A1 (it)
FR (1) FR1077589A (it)
GB (1) GB734311A (it)
IT (1) IT500079A (it)
NL (1) NL96177C (it)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE544065A (it) * 1953-08-14
BE533455A (it) * 1953-11-18
US2813807A (en) * 1954-07-19 1957-11-19 Philips Corp Method of making a dispenser cathode
US3041209A (en) * 1955-06-28 1962-06-26 Gen Electric Method of making a thermionic cathode
BE559450A (it) * 1956-07-24
NL100722C (it) * 1956-10-24
BE563664A (it) * 1957-01-03
US3075066A (en) * 1957-12-03 1963-01-22 Union Carbide Corp Article of manufacture and method of making same
US2975320A (en) * 1958-12-03 1961-03-14 Rca Corp Low-temperature plasma source
US3076916A (en) * 1959-01-21 1963-02-05 Semicon Associates Inc Impregnated tungsten cathode structures and methods for fabricating same
US2995674A (en) * 1959-02-27 1961-08-08 Raytheon Co Impregnated cathodes
US3155864A (en) * 1960-03-21 1964-11-03 Gen Electric Dispenser cathode
NL266639A (it) * 1960-07-05
US3160780A (en) * 1961-01-17 1964-12-08 Philips Corp Indirectly heated cathode
US3258636A (en) * 1961-09-01 1966-06-28 Electron emitter with activator of sill cide, boride or carbide of solid solu- tion of barium and at least one other alkaline earth metal
NL6515843A (it) * 1965-12-07 1967-06-08
NL6602973A (it) * 1966-03-08 1967-09-11
US3514324A (en) * 1967-05-01 1970-05-26 Kopco Ind Tungsten coating of dispenser cathode
US3538570A (en) * 1968-02-28 1970-11-10 Otto G Koppius Thermionic dispenser cathode
US4097762A (en) * 1975-08-14 1978-06-27 International Telephone & Telegraph Corporation Xenon arc discharge lamp having a particular electrode composition and wherein the arc discharge is obtained without heating the electrode
US4636749A (en) * 1979-08-13 1987-01-13 Brunswick Corporation Pulsed magnetron tube having improved electron emitter assembly
US4377505A (en) * 1980-12-29 1983-03-22 General Electric Company Electrical resistor and fabrication thereof
FR2514945A1 (fr) * 1981-10-20 1983-04-22 Thomson Csf Cathode a chauffage indirect et tube electronique, a rayons cathodiques notamment, muni d'une telle cathode
WO1985002071A1 (en) * 1983-11-02 1985-05-09 Brunswick Corporation Tuning apparatus for a radio frequency power device
US4675570A (en) * 1984-04-02 1987-06-23 Varian Associates, Inc. Tungsten-iridium impregnated cathode
US5418070A (en) * 1988-04-28 1995-05-23 Varian Associates, Inc. Tri-layer impregnated cathode
KR920003185B1 (ko) * 1990-01-31 1992-04-23 삼성전관 주식회사 디스펜서형 음극 및 그 제조방법
JP2985467B2 (ja) * 1992-01-22 1999-11-29 三菱電機株式会社 含浸型カソードの製造方法
DE19652822A1 (de) * 1996-12-18 1998-06-25 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Sinterelektrode
US20090284124A1 (en) * 2008-04-22 2009-11-19 Wolfgang Kutschera Cathode composed of materials with different electron works functions

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH159791A (de) * 1931-02-14 1933-01-31 Aeg Glühkathode für elektrische Entladungsgefässe.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL15389C (it) * 1923-01-12
US2389060A (en) * 1943-08-13 1945-11-13 Callite Tungsten Corp Refractory body of high electronic emission
US2547869A (en) * 1947-10-31 1951-04-03 Sylvania Electric Prod Fluorescent lamp electrode

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH159791A (de) * 1931-02-14 1933-01-31 Aeg Glühkathode für elektrische Entladungsgefässe.

Also Published As

Publication number Publication date
IT500079A (it)
US2700000A (en) 1955-01-18
GB734311A (en) 1955-07-27
FR1077589A (fr) 1954-11-09
ES207960A1 (es) 1953-07-16
BE517981A (it)
ES209589A1 (es) 1953-07-16
CH318053A (de) 1956-12-15
NL96177C (it)

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