JPS579028A - Electron tube cathode structure and preparation - Google Patents

Electron tube cathode structure and preparation

Info

Publication number
JPS579028A
JPS579028A JP8145780A JP8145780A JPS579028A JP S579028 A JPS579028 A JP S579028A JP 8145780 A JP8145780 A JP 8145780A JP 8145780 A JP8145780 A JP 8145780A JP S579028 A JPS579028 A JP S579028A
Authority
JP
Japan
Prior art keywords
positioner
end shield
electron tube
lead
cathode structure
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.)
Granted
Application number
JP8145780A
Other languages
Japanese (ja)
Other versions
JPH057811B2 (en
Inventor
Mamoru Kurokuzuhara
Soji Takahashi
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 JP8145780A priority Critical patent/JPS579028A/en
Publication of JPS579028A publication Critical patent/JPS579028A/en
Publication of JPH057811B2 publication Critical patent/JPH057811B2/ja
Granted 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

Landscapes

  • Microwave Tubes (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

PURPOSE:To assemble an upper end shield accurately without causing the inclination, and to reduce the cost by welding or integrally molding a center lead and the upper end for constituting an electron tube cathode structure. CONSTITUTION:An end shield 12 and a center lead 14 are first butted and welded integrally, then an upper shield 12 secured with said lead 14 and up-down positioner 21 are inserted sequentially into an end shield fitting hole 20a in an end shield positioner 20, thereafter a filament 1 is inserted into said positioner 21 and a lower end shield 3 secured with a side lead 5 is inserted into a fitting hole 20a. Then said positioner 20 is assembled with a seal part positioner 22 and fitted with a seal part 7 to be mounted with an insulator 6. Consequently the accuracy is improved and the cost is reduced.
JP8145780A 1980-06-18 1980-06-18 Electron tube cathode structure and preparation Granted JPS579028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8145780A JPS579028A (en) 1980-06-18 1980-06-18 Electron tube cathode structure and preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8145780A JPS579028A (en) 1980-06-18 1980-06-18 Electron tube cathode structure and preparation

Publications (2)

Publication Number Publication Date
JPS579028A true JPS579028A (en) 1982-01-18
JPH057811B2 JPH057811B2 (en) 1993-01-29

Family

ID=13746925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8145780A Granted JPS579028A (en) 1980-06-18 1980-06-18 Electron tube cathode structure and preparation

Country Status (1)

Country Link
JP (1) JPS579028A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6258545A (en) * 1985-09-06 1987-03-14 Hitachi Ltd Magnetron cathode structure
CN100381241C (en) * 2006-02-17 2008-04-16 美的集团有限公司 Vacuum tube welding method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50152562U (en) * 1974-06-06 1975-12-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50152562U (en) * 1974-06-06 1975-12-18

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6258545A (en) * 1985-09-06 1987-03-14 Hitachi Ltd Magnetron cathode structure
CN100381241C (en) * 2006-02-17 2008-04-16 美的集团有限公司 Vacuum tube welding method

Also Published As

Publication number Publication date
JPH057811B2 (en) 1993-01-29

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