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GB272249A - Improvements in or relating to thermionic valves - Google Patents

Improvements in or relating to thermionic valves

Info

Publication number
GB272249A
GB272249A GB15194/27A GB1519427A GB272249A GB 272249 A GB272249 A GB 272249A GB 15194/27 A GB15194/27 A GB 15194/27A GB 1519427 A GB1519427 A GB 1519427A GB 272249 A GB272249 A GB 272249A
Authority
GB
United Kingdom
Prior art keywords
grid
auxiliary electrode
cathode
electrode
control grid
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
GB15194/27A
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 GB272249A publication Critical patent/GB272249A/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
    • 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
    • H01J2893/001—Non-constructive schematic arrangements

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

272,249. Telefunken Ges. f³r Drahtlose Telegraphie. June 4, 1926, [Convention date]. Vacuum tubes.- Secondary electron emission from a control grid or other electrode is reduced by arranging near the grid an auxiliary electrode in the form of a metal cage, ring or coil, partly surrounding the grid and maintained at a potential equal to or less than that of the cathode. The auxiliary electrode may be connected with the cathode by a lead within the bulb, or by a circuit outside the bulb. The length of the auxiliary electrode is preferably one-sixth of that of the control grid. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also an auxiliary electrode H extending along the length of the control grid G and mounted between the grid and anode A. The electrode is connected with the cathode F by a lead 1. This subject-matter does not appear in the Specification as accepted.
GB15194/27A 1926-06-04 1927-06-07 Improvements in or relating to thermionic valves Expired GB272249A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE272249X 1926-06-04

Publications (1)

Publication Number Publication Date
GB272249A true GB272249A (en) 1928-08-30

Family

ID=6009317

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15194/27A Expired GB272249A (en) 1926-06-04 1927-06-07 Improvements in or relating to thermionic valves

Country Status (1)

Country Link
GB (1) GB272249A (en)

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