GB280236A - Improvements in or relating to incandescent cathodes - Google Patents

Improvements in or relating to incandescent cathodes

Info

Publication number
GB280236A
GB280236A GB29662/27A GB2966227A GB280236A GB 280236 A GB280236 A GB 280236A GB 29662/27 A GB29662/27 A GB 29662/27A GB 2966227 A GB2966227 A GB 2966227A GB 280236 A GB280236 A GB 280236A
Authority
GB
United Kingdom
Prior art keywords
alkaline earth
metal
siemens
core
compound
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
GB29662/27A
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 Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
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 Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB280236A publication Critical patent/GB280236A/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
    • H01J1/14—Solid thermionic cathodes characterised by the material

Landscapes

  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

280,236. Siemens - Schuckertwerke Akt.-Ges., (Assignees of Siemens-Schuckertwerke Ges.). Nov. 6. 1926, [Convention date]. Void [Published under Sed. 91 of the Acts]. Vacuum tubes.-An incandescent cathode contains one or more alkaline earth metal compounds such as oxides, and one or more alkaline earth metals in metallic form. The compound and metal may be mixed in powdered form and applied to a core of platinum or tungsten or the metal may be applied electrolytically to the core so as to form a carrier for the compound. The alkaline earth metal improves the, electron emission and absorbs gas.
GB29662/27A 1926-11-06 1927-11-05 Improvements in or relating to incandescent cathodes Expired GB280236A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE280236X 1926-11-06

Publications (1)

Publication Number Publication Date
GB280236A true GB280236A (en) 1928-06-21

Family

ID=6029932

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29662/27A Expired GB280236A (en) 1926-11-06 1927-11-05 Improvements in or relating to incandescent cathodes

Country Status (2)

Country Link
FR (1) FR643378A (en)
GB (1) GB280236A (en)

Also Published As

Publication number Publication date
FR643378A (en) 1928-09-15

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