CA942373A - Dispenser cathode with impermeable protective coating - Google Patents

Dispenser cathode with impermeable protective coating

Info

Publication number
CA942373A
CA942373A CA106,981A CA106981A CA942373A CA 942373 A CA942373 A CA 942373A CA 106981 A CA106981 A CA 106981A CA 942373 A CA942373 A CA 942373A
Authority
CA
Canada
Prior art keywords
protective coating
dispenser cathode
impermeable protective
impermeable
dispenser
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
CA106,981A
Other languages
English (en)
Other versions
CA106981S (en
Inventor
Helmut Katz
Horst Hofmann
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Application granted granted Critical
Publication of CA942373A publication Critical patent/CA942373A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J9/042—Manufacture, activation of the emissive part
    • 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

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Battery Electrode And Active Subsutance (AREA)
CA106,981A 1970-03-05 1971-03-05 Dispenser cathode with impermeable protective coating Expired CA942373A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2010479A DE2010479C3 (de) 1970-03-05 1970-03-05 Metallkapillar Kathode mit gegen Luftfeuchtigkeit geschütztem porösem Emissionsstofftrager

Publications (1)

Publication Number Publication Date
CA942373A true CA942373A (en) 1974-02-19

Family

ID=5764232

Family Applications (1)

Application Number Title Priority Date Filing Date
CA106,981A Expired CA942373A (en) 1970-03-05 1971-03-05 Dispenser cathode with impermeable protective coating

Country Status (4)

Country Link
US (1) US3676731A (de)
CA (1) CA942373A (de)
DE (1) DE2010479C3 (de)
GB (1) GB1309023A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310603A (en) * 1978-11-30 1982-01-12 Varian Associates, Inc. Dispenser cathode
GB2100502B (en) * 1978-11-30 1983-08-03 Varian Associates Dispenser cathodes
US4417173A (en) * 1980-12-09 1983-11-22 E M I-Varian Limited Thermionic electron emitters and methods of making them
DE3627384A1 (de) * 1986-08-12 1988-02-18 Siemens Ag Indirekt geheizte vorratskathode, insbesondere metall-kapillar-kathode, fuer elektrische entladungsgefaesse
JPS63236239A (ja) * 1987-03-10 1988-10-03 シーメンス、アクチエンゲゼルシヤフト 放電管用デイスペンサー陰極とその製法

Also Published As

Publication number Publication date
DE2010479A1 (de) 1971-09-16
GB1309023A (en) 1973-03-07
US3676731A (en) 1972-07-11
DE2010479C3 (de) 1973-11-22
DE2010479B2 (de) 1973-04-12

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