GB417027A - Improvements in or relating to thermionic valves - Google Patents

Improvements in or relating to thermionic valves

Info

Publication number
GB417027A
GB417027A GB5906/34A GB590634A GB417027A GB 417027 A GB417027 A GB 417027A GB 5906/34 A GB5906/34 A GB 5906/34A GB 590634 A GB590634 A GB 590634A GB 417027 A GB417027 A GB 417027A
Authority
GB
United Kingdom
Prior art keywords
auxiliary
grid
main
feb
screen
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
GB5906/34A
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 GB417027A publication Critical patent/GB417027A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/20—Tubes with more than one discharge path; Multiple tubes, e.g. double diode, triode-hexode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/003—Tubes with plural electrode systems

Landscapes

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

Abstract

417,027. Thermionic valves. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Feb. 22, 1934, No. 5906. Convention date, Feb. 22, 1933. [Class 39 (i).] In a valve with multi-electrode systems comprising a main and auxiliary systems-the latter being usable for gain control-a single indirectly heated cathode K is provided with two emitting surfaces O, k which are used with main and auxiliary anodes A, H arranged so that the two electron streams are mutually perpendicular. The auxiliary anode may be a plate or rod and it may be surrounded by a screen. As shown in Fig. 4 the main electrodes A, K and grid G are spaced by an insulator J which carries a screen 5 on which the auxiliary emission surface k is mounted. With cathodes of prismatic form the four surfaces may be used for emission ; the grid G, Fig. 6, is supported by wires S and the auxiliary anodes are within the grid. To obtain uniform heating of the cathode, the heating filament D, Fig. 5, may have closer spirals at the end near the auxiliary emission surface.
GB5906/34A 1933-02-22 1934-02-22 Improvements in or relating to thermionic valves Expired GB417027A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE417027X 1933-02-22

Publications (1)

Publication Number Publication Date
GB417027A true GB417027A (en) 1934-09-26

Family

ID=6448659

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5906/34A Expired GB417027A (en) 1933-02-22 1934-02-22 Improvements in or relating to thermionic valves

Country Status (1)

Country Link
GB (1) GB417027A (en)

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