OA00735A - Electric discharge tube provided with a cathode, the surface of which consists of alkaline earth metal oxide activated by barium. - Google Patents

Electric discharge tube provided with a cathode, the surface of which consists of alkaline earth metal oxide activated by barium.

Info

Publication number
OA00735A
OA00735A OA50814A OA50814A OA00735A OA 00735 A OA00735 A OA 00735A OA 50814 A OA50814 A OA 50814A OA 50814 A OA50814 A OA 50814A OA 00735 A OA00735 A OA 00735A
Authority
OA
OAPI
Prior art keywords
barium
cathode
metal oxide
earth metal
alkaline earth
Prior art date
Application number
OA50814A
Other languages
French (fr)
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Publication of OA00735A publication Critical patent/OA00735A/en

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00Details 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
    • H01J1/02Main electrodes
    • H01J1/13Solid thermionic cathodes
    • H01J1/14Solid thermionic cathodes characterised by the material
    • H01J1/142Solid thermionic cathodes characterised by the material with alkaline-earth metal oxides, or such oxides used in conjunction with reducing agents, as an emissive material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00Details 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
    • H01J1/02Main electrodes
    • H01J1/13Solid thermionic cathodes
    • H01J1/20Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28Dispenser-type cathodes, e.g. L-cathode
OA50814A 1961-03-08 1964-12-12 Electric discharge tube provided with a cathode, the surface of which consists of alkaline earth metal oxide activated by barium. OA00735A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL262150 1961-03-08

Publications (1)

Publication Number Publication Date
OA00735A true OA00735A (en) 1967-07-15

Family

ID=19752920

Family Applications (1)

Application Number Title Priority Date Filing Date
OA50814A OA00735A (en) 1961-03-08 1964-12-12 Electric discharge tube provided with a cathode, the surface of which consists of alkaline earth metal oxide activated by barium.

Country Status (9)

Country Link
US (1) US3333141A (en)
CH (1) CH412118A (en)
DE (1) DE1149463B (en)
DK (1) DK106684C (en)
ES (1) ES275203A1 (en)
GB (1) GB994151A (en)
NL (1) NL113461C (en)
OA (1) OA00735A (en)
SE (1) SE306579B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6501944A (en) * 1965-02-17 1966-08-18
US3663857A (en) * 1969-02-13 1972-05-16 Avco Corp Electron emitter comprising metal oxide-metal contact interface and method for making the same
US3898721A (en) * 1973-05-18 1975-08-12 Gte Sylvania Inc Diffusion bonded cathode for electron discharge device
US3875629A (en) * 1973-05-18 1975-04-08 Gte Sylvania Inc Method of fabricating cathodes for electron discharge devices
DE3323473A1 (en) * 1983-06-29 1985-01-03 Siemens AG, 1000 Berlin und 8000 München QUICK HEATING CATHODE
KR100195955B1 (en) * 1995-12-20 1999-06-15 구자홍 Cathode structure and the coating method of electron emitter
DE102008041443A1 (en) * 2008-08-22 2010-02-25 Robert Bosch Gmbh Gear drive unit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2950993A (en) * 1956-04-02 1960-08-30 Rca Corp Oxide coated cathodes and method of manufacture
US3159461A (en) * 1958-10-20 1964-12-01 Bell Telephone Labor Inc Thermionic cathode
US2945150A (en) * 1958-12-11 1960-07-12 Gen Electric Thermionic cathodes and methods of making
US2995674A (en) * 1959-02-27 1961-08-08 Raytheon Co Impregnated cathodes
NL255625A (en) * 1959-09-18

Also Published As

Publication number Publication date
US3333141A (en) 1967-07-25
DK106684C (en) 1967-03-06
ES275203A1 (en) 1962-05-01
GB994151A (en) 1965-06-02
SE306579B (en) 1968-12-02
DE1149463B (en) 1963-05-30
CH412118A (en) 1966-04-30
NL113461C (en)

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