GB372393A - Improvements in and relating to thermionic valves - Google Patents

Improvements in and relating to thermionic valves

Info

Publication number
GB372393A
GB372393A GB359531A GB359531A GB372393A GB 372393 A GB372393 A GB 372393A GB 359531 A GB359531 A GB 359531A GB 359531 A GB359531 A GB 359531A GB 372393 A GB372393 A GB 372393A
Authority
GB
United Kingdom
Prior art keywords
strips
grid
insulating material
cathode
anode
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
GB359531A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB359531A priority Critical patent/GB372393A/en
Publication of GB372393A publication Critical patent/GB372393A/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

Landscapes

  • Plasma Technology (AREA)

Abstract

372,393. Thermionic valves. FREEDMAN, P., 70, Durley Road, London. Feb. 4, 1931, No. 3595. [Class 39 (i).] In a valve having a grid consisting of two flat portions between which a filament cathode is arranged, the grid is separated from the cathode or from another electrode by a coating of insulating material which does not completely cover the surface of the grid, whereby a very close spacing of the electrodes may be obtained. The insulation may consist of a refractory material such as magnesia or thoria. As shown, the grid consists of two sets of strips 15, 16 spaced from a filament cathode 12 and from an anode 17 by coatings of insulating material 19, the strips being welded to end strips joined together by links 20. The strips may be of circular or elliptical section. In another valve the grid strips are spaced from the anode by a coating of insulating material, and from the cathode by wires completely covered with insulating material and preferably arranged co-linearly with the strips. Two grids may be provided.
GB359531A 1931-02-04 1931-02-04 Improvements in and relating to thermionic valves Expired GB372393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB359531A GB372393A (en) 1931-02-04 1931-02-04 Improvements in and relating to thermionic valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB359531A GB372393A (en) 1931-02-04 1931-02-04 Improvements in and relating to thermionic valves

Publications (1)

Publication Number Publication Date
GB372393A true GB372393A (en) 1932-05-04

Family

ID=9761289

Family Applications (1)

Application Number Title Priority Date Filing Date
GB359531A Expired GB372393A (en) 1931-02-04 1931-02-04 Improvements in and relating to thermionic valves

Country Status (1)

Country Link
GB (1) GB372393A (en)

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