FR945839A - Further development of vacuum tube cathodes - Google Patents

Further development of vacuum tube cathodes

Info

Publication number
FR945839A
FR945839A FR945839DA FR945839A FR 945839 A FR945839 A FR 945839A FR 945839D A FR945839D A FR 945839DA FR 945839 A FR945839 A FR 945839A
Authority
FR
France
Prior art keywords
further development
vacuum tube
tube cathodes
cathodes
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
Albrecht Otto Weinreich
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.)
RADIOELECTRIQUES LAB
Original Assignee
RADIOELECTRIQUES LAB
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 RADIOELECTRIQUES LAB filed Critical RADIOELECTRIQUES LAB
Application granted granted Critical
Publication of FR945839A publication Critical patent/FR945839A/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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/26—Supports for the emissive material
    • 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
FR945839D 1947-04-18 1947-04-18 Further development of vacuum tube cathodes Expired FR945839A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR945839T 1947-04-18

Publications (1)

Publication Number Publication Date
FR945839A true FR945839A (en) 1949-05-16

Family

ID=9472574

Family Applications (1)

Application Number Title Priority Date Filing Date
FR945839D Expired FR945839A (en) 1947-04-18 1947-04-18 Further development of vacuum tube cathodes

Country Status (1)

Country Link
FR (1) FR945839A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039140B (en) * 1953-04-02 1958-09-18 Csf Process for the production of supply cathodes
FR2818437A1 (en) * 2000-12-15 2002-06-21 Thomson Tubes & Displays Structure for an oxide cathode for a cathode ray tube using indentation of the surface of the hood to increase contact with the emissive wash applied to the hood

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039140B (en) * 1953-04-02 1958-09-18 Csf Process for the production of supply cathodes
FR2818437A1 (en) * 2000-12-15 2002-06-21 Thomson Tubes & Displays Structure for an oxide cathode for a cathode ray tube using indentation of the surface of the hood to increase contact with the emissive wash applied to the hood

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