FR661813A - High emissivity cathode for electron emission vacuum tube - Google Patents

High emissivity cathode for electron emission vacuum tube

Info

Publication number
FR661813A
FR661813A FR661813DA FR661813A FR 661813 A FR661813 A FR 661813A FR 661813D A FR661813D A FR 661813DA FR 661813 A FR661813 A FR 661813A
Authority
FR
France
Prior art keywords
cathode
electron emission
vacuum tube
high emissivity
emission vacuum
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.)
Expired
Application number
Other languages
French (fr)
Inventor
Gabriel-Jules-August Pelletier
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.)
IND DE E C GRAM Ets
Original Assignee
IND DE E C GRAM Ets
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 IND DE E C GRAM Ets filed Critical IND DE E C GRAM Ets
Application granted granted Critical
Publication of FR661813A publication Critical patent/FR661813A/en
Expired legal-status Critical Current

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
    • H01J1/14—Solid thermionic cathodes characterised by the material
FR661813D 1927-12-31 1927-12-31 High emissivity cathode for electron emission vacuum tube Expired FR661813A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR661813T 1927-12-31

Publications (1)

Publication Number Publication Date
FR661813A true FR661813A (en) 1929-07-30

Family

ID=9011093

Family Applications (1)

Application Number Title Priority Date Filing Date
FR661813D Expired FR661813A (en) 1927-12-31 1927-12-31 High emissivity cathode for electron emission vacuum tube

Country Status (1)

Country Link
FR (1) FR661813A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0143222A1 (en) * 1983-09-30 1985-06-05 BBC Aktiengesellschaft Brown, Boveri & Cie. Thermionic cathode capable of high emission for an electron tube, and method of manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0143222A1 (en) * 1983-09-30 1985-06-05 BBC Aktiengesellschaft Brown, Boveri & Cie. Thermionic cathode capable of high emission for an electron tube, and method of manufacture

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