FR58949E - Directly heated cathodes for special high power electron tubes - Google Patents

Directly heated cathodes for special high power electron tubes

Info

Publication number
FR58949E
FR58949E FR58949DA FR58949E FR 58949 E FR58949 E FR 58949E FR 58949D A FR58949D A FR 58949DA FR 58949 E FR58949 E FR 58949E
Authority
FR
France
Prior art keywords
high power
directly heated
special high
electron tubes
power electron
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)
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Application granted granted Critical
Publication of FR58949E publication Critical patent/FR58949E/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
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/16—Cathodes heated directly by an electric current characterised by the shape
FR58949D 1948-12-30 1948-12-30 Directly heated cathodes for special high power electron tubes Expired FR58949E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR58949T 1948-12-30

Publications (1)

Publication Number Publication Date
FR58949E true FR58949E (en) 1954-04-22

Family

ID=8692805

Family Applications (1)

Application Number Title Priority Date Filing Date
FR58949D Expired FR58949E (en) 1948-12-30 1948-12-30 Directly heated cathodes for special high power electron tubes

Country Status (1)

Country Link
FR (1) FR58949E (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2395595A1 (en) * 1977-06-21 1979-01-19 Siemens Ag X=Ray tube with heated cathode elements as emitter - applies voltage across ends with cut=out of different depths in strip
DE2759147A1 (en) * 1977-12-31 1979-07-12 Philips Patentverwaltung Electron tube with cathode heater of pyrolytic graphite - uses spherical shape for graphite heater with segmental current leads
US6115453A (en) * 1997-08-20 2000-09-05 Siemens Aktiengesellschaft Direct-Heated flats emitter for emitting an electron beam

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2395595A1 (en) * 1977-06-21 1979-01-19 Siemens Ag X=Ray tube with heated cathode elements as emitter - applies voltage across ends with cut=out of different depths in strip
DE2759147A1 (en) * 1977-12-31 1979-07-12 Philips Patentverwaltung Electron tube with cathode heater of pyrolytic graphite - uses spherical shape for graphite heater with segmental current leads
US6115453A (en) * 1997-08-20 2000-09-05 Siemens Aktiengesellschaft Direct-Heated flats emitter for emitting an electron beam

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