FR1558677A - - Google Patents

Info

Publication number
FR1558677A
FR1558677A FR1558677DA FR1558677A FR 1558677 A FR1558677 A FR 1558677A FR 1558677D A FR1558677D A FR 1558677DA FR 1558677 A FR1558677 A FR 1558677A
Authority
FR
France
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
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 filed Critical
Application granted granted Critical
Publication of FR1558677A publication Critical patent/FR1558677A/fr
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
    • H01J1/22—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Solid Thermionic Cathode (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Carbon And Carbon Compounds (AREA)
FR1558677D 1967-03-07 1968-03-06 Expired FR1558677A (fr)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
FR1558677A true FR1558677A (fr) 1969-02-28

Family

ID=19799479

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1558677D Expired FR1558677A (fr) 1967-03-07 1968-03-06

Country Status (7)

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

Families Citing this family (6)

* 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
DE102017101946A1 (de) * 2017-02-01 2018-08-02 Epcos Ag PTC-Heizer mit verringertem Einschaltstrom
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

Also Published As

Publication number Publication date
ES351239A1 (es) 1969-06-01
CH469351A (de) 1969-02-28
DE1639354A1 (de) 1970-06-04
GB1222887A (en) 1971-02-17
US3495120A (en) 1970-02-10
NL6703548A (fr) 1968-09-09

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Legal Events

Date Code Title Description
ST Notification of lapse