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GB888847A - A directly heated cathode wire - Google Patents

A directly heated cathode wire

Info

Publication number
GB888847A
GB888847A GB23132/58A GB2313258A GB888847A GB 888847 A GB888847 A GB 888847A GB 23132/58 A GB23132/58 A GB 23132/58A GB 2313258 A GB2313258 A GB 2313258A GB 888847 A GB888847 A GB 888847A
Authority
GB
United Kingdom
Prior art keywords
directly heated
heated cathode
cathode wire
cathode
july
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
GB23132/58A
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.)
Tesla AS
Original Assignee
Tesla AS
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 Tesla AS filed Critical Tesla AS
Publication of GB888847A publication Critical patent/GB888847A/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

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

888,847. Thermionic cathode constructions. TESLA, NARODNI PODNIK. July 18, 1958 [July 29, 1957], No. 23132/58. Class 39(1) A directly heated cathode consists of a wire having a central portion 1 of uniform diameter, and gradually tapering end portions. The length of each tapering portion 2-3 and 2-4 is less than the length of the wire over which there will be a perceptible cooling effect due to direct conduction to the end supports of the cathode.
GB23132/58A 1957-07-29 1958-07-18 A directly heated cathode wire Expired GB888847A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS888847X 1957-07-29

Publications (1)

Publication Number Publication Date
GB888847A true GB888847A (en) 1962-02-07

Family

ID=5456532

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23132/58A Expired GB888847A (en) 1957-07-29 1958-07-18 A directly heated cathode wire

Country Status (1)

Country Link
GB (1) GB888847A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002078033A3 (en) * 2001-03-21 2003-08-07 Advanced Electron Beams Inc Filament having a variable cross-section, and electron beam emitter comprising such filament

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002078033A3 (en) * 2001-03-21 2003-08-07 Advanced Electron Beams Inc Filament having a variable cross-section, and electron beam emitter comprising such filament
US6630774B2 (en) 2001-03-21 2003-10-07 Advanced Electron Beams, Inc. Electron beam emitter
US6800989B2 (en) 2001-03-21 2004-10-05 Advanced Electron Beams, Inc. Method of forming filament for electron beam emitter
US7180231B2 (en) 2001-03-21 2007-02-20 Advanced Electron Beams, Inc. Electron beam emitter

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