GB516387A - Improvements in or relating to electric discharge devices and cathodes therefor - Google Patents

Improvements in or relating to electric discharge devices and cathodes therefor

Info

Publication number
GB516387A
GB516387A GB1880038A GB1880038A GB516387A GB 516387 A GB516387 A GB 516387A GB 1880038 A GB1880038 A GB 1880038A GB 1880038 A GB1880038 A GB 1880038A GB 516387 A GB516387 A GB 516387A
Authority
GB
United Kingdom
Prior art keywords
cathode
wire
relating
electric discharge
discharge devices
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
GB1880038A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1880038A priority Critical patent/GB516387A/en
Priority to FR856449D priority patent/FR856449A/en
Publication of GB516387A publication Critical patent/GB516387A/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
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/16—Cathodes heated directly by an electric current characterised by the shape

Landscapes

  • Microwave Tubes (AREA)

Abstract

516,387. Thermionic cathodes. STANDARD TELEPHONES & CABLES, Ltd., and GOODCHILD, F. D. June 24, 1938, No. 18800. [Class 39 (i)] A directly heated cathode is made of hollow tubing and is fixed at one end while its other end is slidably guided without tensioning or compressing means. In the form shown, the cathode comprises lengths of coated copper or nickel tubing of oval, circular or rectangular section connected in series by welded on links P attached to rods G sliding in apertures in the insulators A, B. The free ends of the cathode are secured to the leading-in conductors L, M by wires Q of molybdenum extending from the interior of the tubes. In a modification the cathode is in the form of a sinuous flanged filament, each turn of the wire being rigidly fixed at one end of the cathode. The other ends of the wire may pass over hooks having a sliding fit in a second insulating plate. The tube may have one or more grids.
GB1880038A 1938-06-24 1938-06-24 Improvements in or relating to electric discharge devices and cathodes therefor Expired GB516387A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1880038A GB516387A (en) 1938-06-24 1938-06-24 Improvements in or relating to electric discharge devices and cathodes therefor
FR856449D FR856449A (en) 1938-06-24 1939-06-16 Electronic discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1880038A GB516387A (en) 1938-06-24 1938-06-24 Improvements in or relating to electric discharge devices and cathodes therefor

Publications (1)

Publication Number Publication Date
GB516387A true GB516387A (en) 1940-01-01

Family

ID=10118636

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1880038A Expired GB516387A (en) 1938-06-24 1938-06-24 Improvements in or relating to electric discharge devices and cathodes therefor

Country Status (2)

Country Link
FR (1) FR856449A (en)
GB (1) GB516387A (en)

Also Published As

Publication number Publication date
FR856449A (en) 1940-06-13

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