DE1639354A1 - Mikroheizelemente,insbesondere fuer Kathoden von Elektronenroehren - Google Patents

Mikroheizelemente,insbesondere fuer Kathoden von Elektronenroehren

Info

Publication number
DE1639354A1
DE1639354A1 DE19681639354 DE1639354A DE1639354A1 DE 1639354 A1 DE1639354 A1 DE 1639354A1 DE 19681639354 DE19681639354 DE 19681639354 DE 1639354 A DE1639354 A DE 1639354A DE 1639354 A1 DE1639354 A1 DE 1639354A1
Authority
DE
Germany
Prior art keywords
cathodes
heating elements
silicon carbide
electron tubes
micro heating
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
DE19681639354
Other languages
German (de)
English (en)
Inventor
Knippenberg Wilhelm Franciscus
Pieter Zalm
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of DE1639354A1 publication Critical patent/DE1639354A1/de
Pending 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
    • H01J1/22—Heaters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H01C7/022—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances
    • 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
DE19681639354 1967-03-07 1968-02-06 Mikroheizelemente,insbesondere fuer Kathoden von Elektronenroehren Pending DE1639354A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6703548A NL6703548A (ru) 1967-03-07 1967-03-07

Publications (1)

Publication Number Publication Date
DE1639354A1 true DE1639354A1 (de) 1970-06-04

Family

ID=19799479

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19681639354 Pending DE1639354A1 (de) 1967-03-07 1968-02-06 Mikroheizelemente,insbesondere fuer Kathoden von Elektronenroehren

Country Status (7)

Country Link
US (1) US3495120A (ru)
CH (1) CH469351A (ru)
DE (1) DE1639354A1 (ru)
ES (1) ES351239A1 (ru)
FR (1) FR1558677A (ru)
GB (1) GB1222887A (ru)
NL (1) NL6703548A (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018141458A1 (de) * 2017-02-01 2018-08-09 Epcos Ag Ptc-heizer mit verringertem einschaltstrom

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118983A (en) * 1989-03-24 1992-06-02 Mitsubishi Denki Kabushiki Kaisha Thermionic electron source
NL9100327A (nl) * 1991-02-25 1992-09-16 Philips Nv Kathode.
GB2404128B (en) 2003-07-16 2005-08-24 Kanthal Ltd Silicon carbide furnace heating elements
US20200066474A1 (en) * 2018-08-22 2020-02-27 Modern Electron, LLC Cathodes with conformal cathode surfaces, vacuum electronic devices with cathodes with conformal cathode surfaces, and methods of manufacturing the same
CN111243917B (zh) * 2020-01-19 2021-12-07 中国科学院电子学研究所 一种阴极热子组件及其制备方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1814759A (en) * 1926-02-10 1931-07-14 Frederick S Mccullough Cathode structure
US3380936A (en) * 1965-10-18 1968-04-30 Matsushita Electric Ind Co Ltd Silicon carbide varistors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018141458A1 (de) * 2017-02-01 2018-08-09 Epcos Ag Ptc-heizer mit verringertem einschaltstrom
CN110235210A (zh) * 2017-02-01 2019-09-13 Tdk电子股份有限公司 具有减小的接通电流的ptc加热器
EP3577662B1 (de) 2017-02-01 2022-08-17 TDK Electronics AG Ptc-heizer mit verringertem einschaltstrom

Also Published As

Publication number Publication date
ES351239A1 (es) 1969-06-01
NL6703548A (ru) 1968-09-09
FR1558677A (ru) 1969-02-28
US3495120A (en) 1970-02-10
GB1222887A (en) 1971-02-17
CH469351A (de) 1969-02-28

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