GB521558A - Improvements in or relating to electron discharge devices - Google Patents

Improvements in or relating to electron discharge devices

Info

Publication number
GB521558A
GB521558A GB3358238A GB3358238A GB521558A GB 521558 A GB521558 A GB 521558A GB 3358238 A GB3358238 A GB 3358238A GB 3358238 A GB3358238 A GB 3358238A GB 521558 A GB521558 A GB 521558A
Authority
GB
United Kingdom
Prior art keywords
relating
discharge devices
electron discharge
thermionic
vangeen
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
GB3358238A
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 GB3358238A priority Critical patent/GB521558A/en
Publication of GB521558A publication Critical patent/GB521558A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/46—Leading-in conductors
    • 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
    • H01J19/50—Spacing members extending to the envelope
    • 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
    • H01J2893/0008—Supply leads; Electrode supports via rigid connection to vessel

Landscapes

  • Electronic Switches (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Electron Tubes For Measurement (AREA)

Abstract

521,558. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd., and VANGEEN, A. I. Nov. 18, 1938, No. 33582. [Class 39 (i)] The leads of a thermionic valve are coated with copper to reduce skin resistance at high frequencies, the coating-which may be by electro-plating-being effected after . the tungsten lead has been sealed in the envelope. Specification 459,922. [Group XI], is referred to.
GB3358238A 1938-11-18 1938-11-18 Improvements in or relating to electron discharge devices Expired GB521558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3358238A GB521558A (en) 1938-11-18 1938-11-18 Improvements in or relating to electron discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3358238A GB521558A (en) 1938-11-18 1938-11-18 Improvements in or relating to electron discharge devices

Publications (1)

Publication Number Publication Date
GB521558A true GB521558A (en) 1940-05-24

Family

ID=10354794

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3358238A Expired GB521558A (en) 1938-11-18 1938-11-18 Improvements in or relating to electron discharge devices

Country Status (1)

Country Link
GB (1) GB521558A (en)

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