FR1443799A - Reserve cathode - Google Patents

Reserve cathode

Info

Publication number
FR1443799A
FR1443799A FR28541A FR28541A FR1443799A FR 1443799 A FR1443799 A FR 1443799A FR 28541 A FR28541 A FR 28541A FR 28541 A FR28541 A FR 28541A FR 1443799 A FR1443799 A FR 1443799A
Authority
FR
France
Prior art keywords
reserve cathode
reserve
cathode
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
FR28541A
Other languages
French (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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of FR1443799A publication Critical patent/FR1443799A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/027—Construction of the gun or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electron Beam Exposure (AREA)
  • Powder Metallurgy (AREA)
FR28541A 1964-08-17 1965-08-17 Reserve cathode Expired FR1443799A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US39007764A 1964-08-17 1964-08-17

Publications (1)

Publication Number Publication Date
FR1443799A true FR1443799A (en) 1966-06-24

Family

ID=23540944

Family Applications (1)

Application Number Title Priority Date Filing Date
FR28541A Expired FR1443799A (en) 1964-08-17 1965-08-17 Reserve cathode

Country Status (4)

Country Link
DE (1) DE1273076B (en)
FR (1) FR1443799A (en)
GB (1) GB1046639A (en)
NL (1) NL6510765A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3488549A (en) * 1968-01-15 1970-01-06 Gen Electric Dispenser cathode material and method of manufacture
US3590242A (en) * 1969-06-12 1971-06-29 Gen Electric Making fused thorium carbide-tungsten cathodes for electron guns
DE2242986C3 (en) * 1972-09-01 1981-05-07 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Hot cathode
JPS5814016B2 (en) * 1978-03-31 1983-03-17 株式会社日立製作所 Substrate metal plate material for directly heated oxide cathode
JPH0298921A (en) * 1988-10-05 1990-04-11 Fujitsu Ltd Electron gun and manufacture thereof aligner equipped with same electron gun and manufacture of semiconductor device using same aligner

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE674258C (en) * 1934-01-27 1939-04-11 Telefunken Gmbh Indirectly heated glow cathode for cathode ray tubes and process for their production

Also Published As

Publication number Publication date
NL6510765A (en) 1966-02-18
GB1046639A (en) 1966-10-26
DE1273076B (en) 1968-07-18

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