CH355529A - Cathode, the emitting surface of which consists of a porous metal body in which or behind which there is a supply of alkaline earth metal compounds, as well as a method for producing such a cathode - Google Patents

Cathode, the emitting surface of which consists of a porous metal body in which or behind which there is a supply of alkaline earth metal compounds, as well as a method for producing such a cathode

Info

Publication number
CH355529A
CH355529A CH355529DA CH355529A CH 355529 A CH355529 A CH 355529A CH 355529D A CH355529D A CH 355529DA CH 355529 A CH355529 A CH 355529A
Authority
CH
Switzerland
Prior art keywords
cathode
behind
producing
supply
well
Prior art date
Application number
Other languages
German (de)
Inventor
Levy Roberto
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 CH355529A publication Critical patent/CH355529A/en

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
CH355529D 1956-10-24 1957-10-21 Cathode, the emitting surface of which consists of a porous metal body in which or behind which there is a supply of alkaline earth metal compounds, as well as a method for producing such a cathode CH355529A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US618072A US2869017A (en) 1956-10-24 1956-10-24 Thermionic dispenser cathode

Publications (1)

Publication Number Publication Date
CH355529A true CH355529A (en) 1961-07-15

Family

ID=24476212

Family Applications (1)

Application Number Title Priority Date Filing Date
CH355529D CH355529A (en) 1956-10-24 1957-10-21 Cathode, the emitting surface of which consists of a porous metal body in which or behind which there is a supply of alkaline earth metal compounds, as well as a method for producing such a cathode

Country Status (7)

Country Link
US (1) US2869017A (en)
BE (1) BE561832A (en)
CH (1) CH355529A (en)
DE (1) DE1042136B (en)
FR (1) FR1185028A (en)
GB (1) GB857090A (en)
NL (1) NL100722C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL108501C (en) * 1957-01-26
JPS58100329A (en) * 1981-12-11 1983-06-15 Toshiba Corp Cathode structure for electron tube
KR930007461B1 (en) * 1991-04-23 1993-08-11 주식회사 금성사 Method of making a dispenser type cathode
US5114742A (en) * 1991-07-17 1992-05-19 The United States Of America As Represented By The Secretary Of The Army Preparing a scandate cathode by impregnating a porous tungsten billet with Ba3 Al2 O6, coating the top surface with a mixture of Sc6 WO12, Sc2 (WO4)3, and W in a 1:3:2 mole ratio, and heating in a vacuum

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE498869A (en) * 1949-10-25
BE512852A (en) * 1951-07-17
BE515833A (en) * 1951-11-29
NL96177C (en) * 1952-02-27
CH315203A (en) * 1952-03-24 1956-07-31 Siemens Ag Cathode for electrical discharge vessels

Also Published As

Publication number Publication date
GB857090A (en) 1960-12-29
FR1185028A (en) 1959-07-29
BE561832A (en)
DE1042136B (en) 1958-10-30
NL100722C (en)
US2869017A (en) 1959-01-13

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