CA946908A - Direct heating cathode - Google Patents

Direct heating cathode

Info

Publication number
CA946908A
CA946908A CA138,652A CA138652A CA946908A CA 946908 A CA946908 A CA 946908A CA 138652 A CA138652 A CA 138652A CA 946908 A CA946908 A CA 946908A
Authority
CA
Canada
Prior art keywords
direct heating
heating cathode
cathode
direct
heating
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
CA138,652A
Other versions
CA138652S (en
Inventor
Takushi Ushiro
Kinjiro Sano
Hisao Nakanishi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Application granted granted Critical
Publication of CA946908A publication Critical patent/CA946908A/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
CA138,652A 1971-04-02 1972-03-30 Direct heating cathode Expired CA946908A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012771 1971-04-02

Publications (1)

Publication Number Publication Date
CA946908A true CA946908A (en) 1974-05-07

Family

ID=12018443

Family Applications (1)

Application Number Title Priority Date Filing Date
CA138,652A Expired CA946908A (en) 1971-04-02 1972-03-30 Direct heating cathode

Country Status (4)

Country Link
US (1) US3783330A (en)
CA (1) CA946908A (en)
DE (1) DE2215784C3 (en)
GB (1) GB1343012A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2723900C2 (en) * 1977-05-26 1982-10-14 Central'nyj naučno-issledovatel'skij institut technologii mašinostroenija, Moskva Indirectly heated, thermally emitting cathode block for electron guns
GB2147732B (en) * 1983-10-07 1987-11-04 English Electric Valve Co Ltd Improvements in or relating to travelling wave tubes
GB2192751B (en) * 1986-07-14 1991-02-13 Denki Kagaku Kogyo Kk Method of making a thermionic cathode structure.
EP0641007A3 (en) * 1993-08-31 1995-06-21 Samsung Display Devices Co Ltd Direct-heating-type dispenser cathode structure.
DE10012203C1 (en) * 2000-03-13 2001-07-26 Siemens Ag Flat thermionic emitter that prevents adverse effects of thermal stresses on emitter distortion - has devices that compensate for deformations caused by heating emission surface and hold transition points between emitter and legs substantially stress-free

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2416566A (en) * 1942-08-01 1947-02-25 Gen Electric Cathode
DE1036419B (en) * 1954-07-24 1958-08-14 Siemens Ag Electron source with flat cathode for electron beam devices working on the pump
GB1102567A (en) * 1964-06-30 1968-02-07 Wickman Wimet Ltd Toolholders for use with detachable cutting inserts
US3384776A (en) * 1965-08-17 1968-05-21 Gen Electric Thermionic tube having a novel electrode support arrangement
US3541382A (en) * 1967-12-11 1970-11-17 Tokyo Shibaura Electric Co Direct heated cathode member for an electron tube
JPS464029Y1 (en) * 1968-05-28 1971-02-12

Also Published As

Publication number Publication date
DE2215784C3 (en) 1982-03-04
GB1343012A (en) 1974-01-10
US3783330A (en) 1974-01-01
DE2215784A1 (en) 1972-10-26
DE2215784B2 (en) 1974-05-30

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