GB248648A - Improvements in or relating to electrodes for thermionic valves - Google Patents

Improvements in or relating to electrodes for thermionic valves

Info

Publication number
GB248648A
GB248648A GB2202825A GB2202825A GB248648A GB 248648 A GB248648 A GB 248648A GB 2202825 A GB2202825 A GB 2202825A GB 2202825 A GB2202825 A GB 2202825A GB 248648 A GB248648 A GB 248648A
Authority
GB
United Kingdom
Prior art keywords
grid
filament
anode
supported
relating
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
GB2202825A
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 GB2202825A priority Critical patent/GB248648A/en
Publication of GB248648A publication Critical patent/GB248648A/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

  • Electron Sources, Ion Sources (AREA)

Abstract

248,648. Emerson, A. Sept. 3, 1925. Vacuum tubes. - A thermionic valve having a grid b and an anode a open at both ends, but entirely surrounding the filament g, has the filament divided into a number of lengths so disposed that the electronic emission is distributed evenly over the grid and anode surfaces. The grid b and anode a have flattened sides, the grid b being formed by winding wire around vertical supporting members, and the filament g being supported by horizontal conducting members h as shown. In a modification the filament comprises a single wire arranged in a zig-zag manner and supported by hooks. Specification 249,403 is referred to.
GB2202825A 1925-09-03 1925-09-03 Improvements in or relating to electrodes for thermionic valves Expired GB248648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2202825A GB248648A (en) 1925-09-03 1925-09-03 Improvements in or relating to electrodes for thermionic valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2202825A GB248648A (en) 1925-09-03 1925-09-03 Improvements in or relating to electrodes for thermionic valves

Publications (1)

Publication Number Publication Date
GB248648A true GB248648A (en) 1926-03-11

Family

ID=10172736

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2202825A Expired GB248648A (en) 1925-09-03 1925-09-03 Improvements in or relating to electrodes for thermionic valves

Country Status (1)

Country Link
GB (1) GB248648A (en)

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