JPS5549839A - Magnetron - Google Patents

Magnetron

Info

Publication number
JPS5549839A
JPS5549839A JP12306178A JP12306178A JPS5549839A JP S5549839 A JPS5549839 A JP S5549839A JP 12306178 A JP12306178 A JP 12306178A JP 12306178 A JP12306178 A JP 12306178A JP S5549839 A JPS5549839 A JP S5549839A
Authority
JP
Japan
Prior art keywords
cathode
electron
spiral
parallel
flat
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
JP12306178A
Other languages
Japanese (ja)
Other versions
JPS5720657B2 (en
Inventor
Jinzo Nakagawa
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electronics 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 Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
Priority to JP12306178A priority Critical patent/JPS5549839A/en
Publication of JPS5549839A publication Critical patent/JPS5549839A/en
Publication of JPS5720657B2 publication Critical patent/JPS5720657B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Microwave Tubes (AREA)

Abstract

PURPOSE: To reduce electron back-bombardment phenomenon and stabilize the tube characteristic by forming a flat srface parallel to the axial direction on the outer periipheral surface of a spiral cathode.
CONSTITUTION: Thorium-tungsten wires is formed in spiral form, and the whole surface except and outer peripheral surface of the spiral body is covered with photoresist and electrolytically treated, and carbonized, and a cathode 11 having flat surface 12 parallel to the axis is formed on the outer surface. In the magnetron which uses this cathode, the electron which advances from an anode vane 3 to the cathode 11 does not disperse in a variety of directions on the outer end surface 12, and follows on a nearly fixed path. Thus, the variation of the tube characteristic accompanied with electron bombardment phenomenon can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
JP12306178A 1978-10-04 1978-10-04 Magnetron Granted JPS5549839A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12306178A JPS5549839A (en) 1978-10-04 1978-10-04 Magnetron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12306178A JPS5549839A (en) 1978-10-04 1978-10-04 Magnetron

Publications (2)

Publication Number Publication Date
JPS5549839A true JPS5549839A (en) 1980-04-10
JPS5720657B2 JPS5720657B2 (en) 1982-04-30

Family

ID=14851223

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12306178A Granted JPS5549839A (en) 1978-10-04 1978-10-04 Magnetron

Country Status (1)

Country Link
JP (1) JPS5549839A (en)

Also Published As

Publication number Publication date
JPS5720657B2 (en) 1982-04-30

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