FR2370355A1 - Cathode pour tubes electroniques - Google Patents

Cathode pour tubes electroniques

Info

Publication number
FR2370355A1
FR2370355A1 FR7733210A FR7733210A FR2370355A1 FR 2370355 A1 FR2370355 A1 FR 2370355A1 FR 7733210 A FR7733210 A FR 7733210A FR 7733210 A FR7733210 A FR 7733210A FR 2370355 A1 FR2370355 A1 FR 2370355A1
Authority
FR
France
Prior art keywords
cathode
electronic tubes
tubes
cathodes
carbonic
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
FR7733210A
Other languages
English (en)
Other versions
FR2370355B1 (fr
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 FR2370355A1 publication Critical patent/FR2370355A1/fr
Application granted granted Critical
Publication of FR2370355B1 publication Critical patent/FR2370355B1/fr
Granted 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
    • 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
    • H01J1/26—Supports for the emissive material

Landscapes

  • Cold Cathode And The Manufacture (AREA)
  • Solid Thermionic Cathode (AREA)
  • Ceramic Products (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Powder Metallurgy (AREA)

Abstract

Les cathodes ont un support pour matériau émissif en mousse carbonique qui présente de grandes stabilités mécaniques et résistance à l'usure et de plus une répartition homogène des pores. Application aux tubes électroniques.
FR7733210A 1976-11-05 1977-11-04 Cathode pour tubes electroniques Granted FR2370355A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2650656A DE2650656B2 (de) 1976-11-05 1976-11-05 Kathode für Elektronenröhren

Publications (2)

Publication Number Publication Date
FR2370355A1 true FR2370355A1 (fr) 1978-06-02
FR2370355B1 FR2370355B1 (fr) 1980-02-01

Family

ID=5992493

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7733210A Granted FR2370355A1 (fr) 1976-11-05 1977-11-04 Cathode pour tubes electroniques

Country Status (9)

Country Link
US (1) US4250429A (fr)
JP (1) JPS5357963A (fr)
CA (1) CA1091748A (fr)
DE (1) DE2650656B2 (fr)
ES (1) ES463795A1 (fr)
FR (1) FR2370355A1 (fr)
GB (1) GB1571142A (fr)
IT (1) IT1087865B (fr)
NL (1) NL7711979A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4487589A (en) * 1981-06-22 1984-12-11 General Electric Company Method of preparing electron emissive coatings for electric discharge devices
US4415835A (en) * 1981-06-22 1983-11-15 General Electric Company Electron emissive coatings for electric discharge devices
US4691220A (en) * 1983-10-07 1987-09-01 American Telephone And Telegraph Company, At&T Bell Laboratories Radial high voltage bidirectional switch structure with concavo-concave shaped semiconductor regions
GB2192751B (en) * 1986-07-14 1991-02-13 Denki Kagaku Kogyo Kk Method of making a thermionic cathode structure.
DE4026301A1 (de) * 1990-08-20 1992-02-27 Siemens Ag Elektronenemitter einer roentgenroehre
US6054801A (en) * 1998-02-27 2000-04-25 Regents, University Of California Field emission cathode fabricated from porous carbon foam material
ATE453924T1 (de) * 2005-07-14 2010-01-15 Lightlab Sweden Ab Kohlenstoffbasierte feldemissionskathode und deren herstellungsverfahren
JP2017107816A (ja) * 2015-12-11 2017-06-15 株式会社堀場エステック 熱電子放出用フィラメント、四重極質量分析計、及び残留ガス分析方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1283401B (de) * 1965-12-23 1968-11-21 Siemens Ag Indirekt geheizte Kathode fuer elektrische Entladungsgefaesse
DE1283403B (de) * 1966-08-05 1968-11-21 Siemens Ag Mittelbar geheizte Vorratskathode fuer elektrische Entladungsgefaesse
DE1930070A1 (de) * 1969-06-13 1970-12-23 Siemens Ag Vorratskathode,insbesondere MK-Kathode auf Thorium-Basis
DE1614686B1 (de) * 1967-12-19 1971-03-11 Siemens Ag Mittelbar geheizte vorratskathode auf thorium-basis
DE1764887A1 (de) * 1968-08-26 1971-10-28 Siemens Ag Verfahren zum Impraegnieren eines poroesen Kohlekoerpers mit Thoriumoxid einer mittelbar geheizten Vorratskathode auf Thorium-Basis
DE2453204A1 (de) * 1974-11-09 1976-05-13 Philips Patentverwaltung Verfahren zum herstellen eines ganz oder teilweise poroesen koerpers aus glasartigem kohlenstoff

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516339B1 (fr) * 1971-02-03 1976-02-27

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1283401B (de) * 1965-12-23 1968-11-21 Siemens Ag Indirekt geheizte Kathode fuer elektrische Entladungsgefaesse
DE1283403B (de) * 1966-08-05 1968-11-21 Siemens Ag Mittelbar geheizte Vorratskathode fuer elektrische Entladungsgefaesse
DE1614686B1 (de) * 1967-12-19 1971-03-11 Siemens Ag Mittelbar geheizte vorratskathode auf thorium-basis
DE1764887A1 (de) * 1968-08-26 1971-10-28 Siemens Ag Verfahren zum Impraegnieren eines poroesen Kohlekoerpers mit Thoriumoxid einer mittelbar geheizten Vorratskathode auf Thorium-Basis
DE1930070A1 (de) * 1969-06-13 1970-12-23 Siemens Ag Vorratskathode,insbesondere MK-Kathode auf Thorium-Basis
DE2453204A1 (de) * 1974-11-09 1976-05-13 Philips Patentverwaltung Verfahren zum herstellen eines ganz oder teilweise poroesen koerpers aus glasartigem kohlenstoff

Also Published As

Publication number Publication date
IT1087865B (it) 1985-06-04
GB1571142A (en) 1980-07-09
JPS568973B2 (fr) 1981-02-26
US4250429A (en) 1981-02-10
FR2370355B1 (fr) 1980-02-01
DE2650656C3 (fr) 1979-05-17
DE2650656B2 (de) 1978-09-07
CA1091748A (fr) 1980-12-16
DE2650656A1 (de) 1978-05-11
ES463795A1 (es) 1978-06-16
JPS5357963A (en) 1978-05-25
NL7711979A (nl) 1978-05-09

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Legal Events

Date Code Title Description
ST Notification of lapse