JPS57831A - Magnetron - Google Patents

Magnetron

Info

Publication number
JPS57831A
JPS57831A JP7276280A JP7276280A JPS57831A JP S57831 A JPS57831 A JP S57831A JP 7276280 A JP7276280 A JP 7276280A JP 7276280 A JP7276280 A JP 7276280A JP S57831 A JPS57831 A JP S57831A
Authority
JP
Japan
Prior art keywords
tube
chip
magnetic pole
open edge
pole chip
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
JP7276280A
Other languages
Japanese (ja)
Inventor
Tomokatsu Oguro
Seiji Kitakaze
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 JP7276280A priority Critical patent/JPS57831A/en
Publication of JPS57831A publication Critical patent/JPS57831A/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

Abstract

PURPOSE:To stabilize the tube characteristic of a magnetron and to improve the production of yield, by locating the opening of an encapsulation tube while contacting with the open flat section of a magnetic pole chip thereby eliminating the gap. CONSTITUTION:An open edge 2b of a magnetic pole chip 2 is made approximately same with the outer-diameter of an anode tube 1 where the open edge 2b of the magnetic pole chip and the open edge 1a of the anode tube are sealed through arc welding. A flange-shaped open edge 10c formed with the outer-diameter shorter than that of said chip 2 is located to contact with the open flat section 2a of said chip 2, then said contacting section is sealed through plasma welding. Consequently the gap isn't produced between the magnetic pole chip and the sealing tube, thereby the shifting of center of the cathode structure and the deformation due to the inclination can be prevented resulting in the stable tube characteristic and the improvement of the production yield.
JP7276280A 1980-06-02 1980-06-02 Magnetron Pending JPS57831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7276280A JPS57831A (en) 1980-06-02 1980-06-02 Magnetron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7276280A JPS57831A (en) 1980-06-02 1980-06-02 Magnetron

Publications (1)

Publication Number Publication Date
JPS57831A true JPS57831A (en) 1982-01-05

Family

ID=13498693

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7276280A Pending JPS57831A (en) 1980-06-02 1980-06-02 Magnetron

Country Status (1)

Country Link
JP (1) JPS57831A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63146326A (en) * 1986-07-28 1988-06-18 Toshiba Corp Magnetron for electronic oven and manufacture thereof
CN103531419A (en) * 2013-10-25 2014-01-22 电子科技大学 Magnetron tube core for microwave heating

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929855B1 (en) * 1962-03-20 1974-08-08
JPS52135659A (en) * 1976-05-10 1977-11-12 Hitachi Ltd Magnetron and its manufacturing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929855B1 (en) * 1962-03-20 1974-08-08
JPS52135659A (en) * 1976-05-10 1977-11-12 Hitachi Ltd Magnetron and its manufacturing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63146326A (en) * 1986-07-28 1988-06-18 Toshiba Corp Magnetron for electronic oven and manufacture thereof
CN103531419A (en) * 2013-10-25 2014-01-22 电子科技大学 Magnetron tube core for microwave heating
CN103531419B (en) * 2013-10-25 2016-02-10 电子科技大学 A kind of microwave heating magnetron tube core

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