JPS5380959A - Direct-heated cathode - Google Patents

Direct-heated cathode

Info

Publication number
JPS5380959A
JPS5380959A JP15648576A JP15648576A JPS5380959A JP S5380959 A JPS5380959 A JP S5380959A JP 15648576 A JP15648576 A JP 15648576A JP 15648576 A JP15648576 A JP 15648576A JP S5380959 A JPS5380959 A JP S5380959A
Authority
JP
Japan
Prior art keywords
direct
heated cathode
foot area
increasing
mechanical strength
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
JP15648576A
Other languages
Japanese (ja)
Inventor
Susumu Koishikawa
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 JP15648576A priority Critical patent/JPS5380959A/en
Publication of JPS5380959A publication Critical patent/JPS5380959A/en
Pending legal-status Critical Current

Links

Landscapes

  • Solid Thermionic Cathode (AREA)

Abstract

PURPOSE: To increase the mechanical strength at the foot area of a direct-heated cathode and to prevent the heat deformation, by increasing the heat radiation efficiency at the foot area higher than the thermionic emission part to lower the temperature at the foot area.
COPYRIGHT: (C)1978,JPO&Japio
JP15648576A 1976-12-27 1976-12-27 Direct-heated cathode Pending JPS5380959A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15648576A JPS5380959A (en) 1976-12-27 1976-12-27 Direct-heated cathode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15648576A JPS5380959A (en) 1976-12-27 1976-12-27 Direct-heated cathode

Publications (1)

Publication Number Publication Date
JPS5380959A true JPS5380959A (en) 1978-07-17

Family

ID=15628780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15648576A Pending JPS5380959A (en) 1976-12-27 1976-12-27 Direct-heated cathode

Country Status (1)

Country Link
JP (1) JPS5380959A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS554943U (en) * 1978-06-23 1980-01-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS554943U (en) * 1978-06-23 1980-01-12
JPS5633806Y2 (en) * 1978-06-23 1981-08-10

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