GB426939A - Improvements in or relating to electron discharge devices - Google Patents

Improvements in or relating to electron discharge devices

Info

Publication number
GB426939A
GB426939A GB3732/35A GB373235A GB426939A GB 426939 A GB426939 A GB 426939A GB 3732/35 A GB3732/35 A GB 3732/35A GB 373235 A GB373235 A GB 373235A GB 426939 A GB426939 A GB 426939A
Authority
GB
United Kingdom
Prior art keywords
coating
holder
feb
relating
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
GB3732/35A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB426939A publication Critical patent/GB426939A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0002—Construction arrangements of electrode systems
    • H01J2893/0005—Fixing of electrodes

Landscapes

  • Electron Tubes For Measurement (AREA)

Abstract

426,939. Thermionic valves. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Feb. 5, 1935, No. 3732. Convention date, Feb. 5, 1934. [Class 39 (i)] In a thermionic valve the insulating electrode holder 1 has a conducting coating 5, which may be of iron, over its surface at least on the side facing the electron source on those parts which are not required to be insulated ; as shown, gaps 2 for the grid supports and the cathode are left uncoated. The coating may also be on the upper side 6. The coating prevents unequal potential distribution on the holder ; it may have a potential bias or be magnetized. Its presence during the manufacturing process assists in de-gassing, as eddy currents heat the coating and drive out gas from the holder.
GB3732/35A 1934-02-05 1935-02-05 Improvements in or relating to electron discharge devices Expired GB426939A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE426939X 1934-02-05

Publications (1)

Publication Number Publication Date
GB426939A true GB426939A (en) 1935-04-11

Family

ID=6477256

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3732/35A Expired GB426939A (en) 1934-02-05 1935-02-05 Improvements in or relating to electron discharge devices

Country Status (1)

Country Link
GB (1) GB426939A (en)

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