GB238123A - Improvements in thermionic triodes - Google Patents

Improvements in thermionic triodes

Info

Publication number
GB238123A
GB238123A GB3052624A GB3052624A GB238123A GB 238123 A GB238123 A GB 238123A GB 3052624 A GB3052624 A GB 3052624A GB 3052624 A GB3052624 A GB 3052624A GB 238123 A GB238123 A GB 238123A
Authority
GB
United Kingdom
Prior art keywords
magnesium
grid
anode
attached
filament
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
GB3052624A
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.)
General Electric Co PLC
Original Assignee
General Electric Co 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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB3052624A priority Critical patent/GB238123A/en
Publication of GB238123A publication Critical patent/GB238123A/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
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
    • 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
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/002—Chemical composition and manufacture chemical

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

238,123. General Electric Co., Ltd., and Smithells, C. J. Dec. 18, 1924. Vacuum tubes.-In a thermionic valve operating with grid rectification and a filament voltage of less than 2.5 volts, the surface of the grid consists of a highly electropositive metal such as magnesium. The filament may consist of thoriated tungsten or of alkaline earths. A piece of magnesium may be attached to the outside of the anode and heated during the exhaustion process by electronic bombardment or by high-frequency induced currents; another piece of magnesium may be attached to the inside of the anode and evaporated in the same way, so as to form a deposit on the grid. Specifications 202,300, 214,262, and 225,234, are referred to.
GB3052624A 1924-12-18 1924-12-18 Improvements in thermionic triodes Expired GB238123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3052624A GB238123A (en) 1924-12-18 1924-12-18 Improvements in thermionic triodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3052624A GB238123A (en) 1924-12-18 1924-12-18 Improvements in thermionic triodes

Publications (1)

Publication Number Publication Date
GB238123A true GB238123A (en) 1925-08-13

Family

ID=10309037

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3052624A Expired GB238123A (en) 1924-12-18 1924-12-18 Improvements in thermionic triodes

Country Status (1)

Country Link
GB (1) GB238123A (en)

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