FR786028A - Perfectionnements aux cathodes émettrices à chauffage indirect, fonctionnant à l'état sombre - Google Patents

Perfectionnements aux cathodes émettrices à chauffage indirect, fonctionnant à l'état sombre

Info

Publication number
FR786028A
FR786028A FR786028DA FR786028A FR 786028 A FR786028 A FR 786028A FR 786028D A FR786028D A FR 786028DA FR 786028 A FR786028 A FR 786028A
Authority
FR
France
Prior art keywords
enhancements
dark state
indirectly heated
state emitting
emitting cathodes
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
English (en)
French (fr)
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Application granted granted Critical
Publication of FR786028A publication Critical patent/FR786028A/fr
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
FR786028D 1934-03-22 1935-02-22 Perfectionnements aux cathodes émettrices à chauffage indirect, fonctionnant à l'état sombre Expired FR786028A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE786028X 1934-03-22

Publications (1)

Publication Number Publication Date
FR786028A true FR786028A (fr) 1935-08-24

Family

ID=6698921

Family Applications (1)

Application Number Title Priority Date Filing Date
FR786028D Expired FR786028A (fr) 1934-03-22 1935-02-22 Perfectionnements aux cathodes émettrices à chauffage indirect, fonctionnant à l'état sombre

Country Status (3)

Country Link
AT (1) AT151497B (de)
CH (1) CH181367A (de)
FR (1) FR786028A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB721837A (en) * 1951-01-11 1955-01-12 Egyesuelt Izzolampa Improvements in cathodes and method of making them
DE965431C (de) * 1952-07-18 1957-06-06 Egyesuelt Izzolampa Gluehkathode mit einem durch einen poroesen Wolframsinterkoerper abgeschlossenen Raum, in dem mindestens ein Alkalimetall enthalten ist

Also Published As

Publication number Publication date
AT151497B (de) 1937-11-10
CH181367A (de) 1935-12-15

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