JPS5654740A - Magnetron - Google Patents

Magnetron

Info

Publication number
JPS5654740A
JPS5654740A JP12986379A JP12986379A JPS5654740A JP S5654740 A JPS5654740 A JP S5654740A JP 12986379 A JP12986379 A JP 12986379A JP 12986379 A JP12986379 A JP 12986379A JP S5654740 A JPS5654740 A JP S5654740A
Authority
JP
Japan
Prior art keywords
heat dam
heat
end shield
outside
melting point
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.)
Pending
Application number
JP12986379A
Other languages
Japanese (ja)
Inventor
Masao Sakai
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12986379A priority Critical patent/JPS5654740A/en
Publication of JPS5654740A publication Critical patent/JPS5654740A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/04—Cathodes
    • H01J23/05—Cathodes having a cylindrical emissive surface, e.g. cathodes for magnetrons

Landscapes

  • Microwave Tubes (AREA)

Abstract

PURPOSE:To curtail production cost, make good use of heat and shorten warm-up hours by decreasing the amount of expensive high-melting point metal materials used and employing an end shield of low processing fees and simple structure. CONSTITUTION:A heat dam 20 is formed to be to the extent that the outside diameter thereof may be suitably coupled with the inside diameter of a spiral cathode 4 and at least three positioning bending-up portions 20a coupled with the torusshaped endshield 21 are formed round the outside face at a desired distance from an end level of a cylinder of said heat dam 20. Hereby the end shield 21 is formed by making a thin board material of a high melting point metal torus shaped and a central hole thereof is formed having a diameter nearly equal to an outside one of the heat dam 20. This torus-shaped end shield 21 is inserted from an end port of the heat dam 20 and stationary positioned when fastened to the bending-up portions 20a.
JP12986379A 1979-10-11 1979-10-11 Magnetron Pending JPS5654740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12986379A JPS5654740A (en) 1979-10-11 1979-10-11 Magnetron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12986379A JPS5654740A (en) 1979-10-11 1979-10-11 Magnetron

Publications (1)

Publication Number Publication Date
JPS5654740A true JPS5654740A (en) 1981-05-14

Family

ID=15020130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12986379A Pending JPS5654740A (en) 1979-10-11 1979-10-11 Magnetron

Country Status (1)

Country Link
JP (1) JPS5654740A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016071999A (en) * 2014-09-29 2016-05-09 東芝ホクト電子株式会社 Magnetron
JP2016192373A (en) * 2015-03-31 2016-11-10 東芝ホクト電子株式会社 Magnetron

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51872A (en) * 1974-06-20 1976-01-07 Matsushita Electronics Corp
JPS51115764A (en) * 1975-04-03 1976-10-12 Toshiba Corp Manufacturing method of a magnetron

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51872A (en) * 1974-06-20 1976-01-07 Matsushita Electronics Corp
JPS51115764A (en) * 1975-04-03 1976-10-12 Toshiba Corp Manufacturing method of a magnetron

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016071999A (en) * 2014-09-29 2016-05-09 東芝ホクト電子株式会社 Magnetron
JP2016192373A (en) * 2015-03-31 2016-11-10 東芝ホクト電子株式会社 Magnetron

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