CH217878A - Cathode for ultra-short wave tubes. - Google Patents

Cathode for ultra-short wave tubes.

Info

Publication number
CH217878A
CH217878A CH217878DA CH217878A CH 217878 A CH217878 A CH 217878A CH 217878D A CH217878D A CH 217878DA CH 217878 A CH217878 A CH 217878A
Authority
CH
Switzerland
Prior art keywords
ultra
cathode
short wave
wave tubes
tubes
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer D Telefunken
Original Assignee
Telefunken Gmbh
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 Telefunken Gmbh filed Critical Telefunken Gmbh
Publication of CH217878A publication Critical patent/CH217878A/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
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/16—Cathodes heated directly by an electric current characterised by the shape
CH217878D 1940-04-30 1941-04-08 Cathode for ultra-short wave tubes. CH217878A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE217878X 1940-04-30

Publications (1)

Publication Number Publication Date
CH217878A true CH217878A (en) 1941-11-15

Family

ID=5830999

Family Applications (1)

Application Number Title Priority Date Filing Date
CH217878D CH217878A (en) 1940-04-30 1941-04-08 Cathode for ultra-short wave tubes.

Country Status (4)

Country Link
BE (1) BE441216A (en)
CH (1) CH217878A (en)
FR (1) FR874688A (en)
NL (1) NL54367C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422142A (en) * 1945-05-26 1947-06-10 Machlett Lab Inc Cathode structure for electron discharge devices

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2817451B2 (en) * 1991-06-25 1998-10-30 日本電気株式会社 Cathode for electron tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422142A (en) * 1945-05-26 1947-06-10 Machlett Lab Inc Cathode structure for electron discharge devices

Also Published As

Publication number Publication date
FR874688A (en) 1942-08-18
NL54367C (en)
BE441216A (en)

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