CH269933A - Electric discharge tube with an indirectly heated cathode. - Google Patents

Electric discharge tube with an indirectly heated cathode.

Info

Publication number
CH269933A
CH269933A CH269933DA CH269933A CH 269933 A CH269933 A CH 269933A CH 269933D A CH269933D A CH 269933DA CH 269933 A CH269933 A CH 269933A
Authority
CH
Switzerland
Prior art keywords
discharge tube
electric discharge
indirectly heated
heated cathode
cathode
Prior art date
Application number
Other languages
German (de)
Inventor
N V Phili Gloeilampenfabrieken
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 CH269933A publication Critical patent/CH269933A/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
CH269933D 1947-08-15 1948-08-13 Electric discharge tube with an indirectly heated cathode. CH269933A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL269933X 1947-08-15

Publications (1)

Publication Number Publication Date
CH269933A true CH269933A (en) 1950-07-31

Family

ID=19781880

Family Applications (1)

Application Number Title Priority Date Filing Date
CH269933D CH269933A (en) 1947-08-15 1948-08-13 Electric discharge tube with an indirectly heated cathode.

Country Status (6)

Country Link
US (1) US2532838A (en)
BE (1) BE484368A (en)
CH (1) CH269933A (en)
DE (1) DE809445C (en)
FR (1) FR970342A (en)
GB (1) GB653707A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1312580A (en) * 1961-11-09 1962-12-21 Csf Improvements to millimeter-sized cathodes for electron tubes
FR1455956A (en) * 1965-07-20 1966-05-20 Thomson Houston Comp Francaise Direct heating cathode improvements

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2212827A (en) * 1937-12-29 1940-08-27 Fides Gmbh Hot cathode for high power
NL52447C (en) * 1938-02-04

Also Published As

Publication number Publication date
US2532838A (en) 1950-12-05
BE484368A (en)
GB653707A (en) 1951-05-23
FR970342A (en) 1951-01-03
DE809445C (en) 1951-07-30

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