GB1327975A - Indirectly heated cathode - Google Patents

Indirectly heated cathode

Info

Publication number
GB1327975A
GB1327975A GB5675971A GB5675971A GB1327975A GB 1327975 A GB1327975 A GB 1327975A GB 5675971 A GB5675971 A GB 5675971A GB 5675971 A GB5675971 A GB 5675971A GB 1327975 A GB1327975 A GB 1327975A
Authority
GB
United Kingdom
Prior art keywords
plate
indirectly heated
sintered
heated cathode
jacket
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.)
Expired
Application number
GB5675971A
Other languages
English (en)
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1327975A publication Critical patent/GB1327975A/en
Expired 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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode

Landscapes

  • Powder Metallurgy (AREA)
  • Solid Thermionic Cathode (AREA)
GB5675971A 1970-12-10 1971-12-07 Indirectly heated cathode Expired GB1327975A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7018001A NL7018001A (ko) 1970-12-10 1970-12-10

Publications (1)

Publication Number Publication Date
GB1327975A true GB1327975A (en) 1973-08-22

Family

ID=19811756

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5675971A Expired GB1327975A (en) 1970-12-10 1971-12-07 Indirectly heated cathode

Country Status (6)

Country Link
US (1) US3753025A (ko)
CA (1) CA934431A (ko)
DE (1) DE2157768A1 (ko)
FR (1) FR2117650A5 (ko)
GB (1) GB1327975A (ko)
NL (1) NL7018001A (ko)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1582837A (en) * 1976-07-10 1981-01-14 Emi Varian Ltd Electron emitter
US4379979A (en) * 1981-02-06 1983-04-12 The United States Of America As Represented By The Secretary Of The Navy Controlled porosity sheet for thermionic dispenser cathode and method of manufacture
EP0389228B1 (en) * 1989-03-24 1995-01-25 Mitsubishi Denki Kabushiki Kaisha High temperature operating element
US5350969A (en) * 1991-12-03 1994-09-27 Litton Systems, Inc. Cathode heater and cathode assembly for microwave power tubes
KR950006088B1 (ko) * 1992-06-27 1995-06-08 주식회사엘지전자 함침형 음극 구조체의 함침 펠렛트 및 그 제조방법

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE890390C (de) * 1951-07-12 1953-09-17 Siemens Ag Kathode fuer elektrische Entladungsgefaesse
US3117249A (en) * 1960-02-16 1964-01-07 Sperry Rand Corp Embedded heater cathode
FR1489050A (fr) * 1966-03-22 1967-07-21 Commissariat Energie Atomique électrode composite pour tuyère de conversion magnétohydrodynamique

Also Published As

Publication number Publication date
CA934431A (en) 1973-09-25
NL7018001A (ko) 1972-06-13
FR2117650A5 (ko) 1972-07-21
US3753025A (en) 1973-08-14
DE2157768A1 (de) 1972-06-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees