GB471411A - Improvements in and relating to electric discharge tubes - Google Patents

Improvements in and relating to electric discharge tubes

Info

Publication number
GB471411A
GB471411A GB6717/37A GB671737A GB471411A GB 471411 A GB471411 A GB 471411A GB 6717/37 A GB6717/37 A GB 6717/37A GB 671737 A GB671737 A GB 671737A GB 471411 A GB471411 A GB 471411A
Authority
GB
United Kingdom
Prior art keywords
grid
grids
cathode
electric discharge
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
GB6717/37A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB471411A publication Critical patent/GB471411A/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

Abstract

471,411. Thermionic valves. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. March 6, 1937, No. 6717. Convention date, March 9, 1936. [Class 39 (i)] In an electric discharge tube comprising a cathode 1, an anode 10 and four or more grids, the first grid 2 is composed of a number of rods, and a second grid 3, which completely surrounds the cathode 1 and grid 2, is formed partly of plateshaped material. The grid 3 is provided with plates 4, 5 at the ends adjacent the rods forming the grid 2. When used as a mixing tube in a superheterodyne receiver, two of the grids 6, 8 are connected together and the grid 9 is connected to the cathode 1 ; the first two grids 2, 3 are then used as oscillator electrodes, the grids 6, 8 as screen grids, the grid 7 as a control grid and the grid 9 as a suppressor grid. The tube may also be used as a triode-hexode.
GB6717/37A 1936-03-09 1937-03-06 Improvements in and relating to electric discharge tubes Expired GB471411A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL471411X 1936-03-09

Publications (1)

Publication Number Publication Date
GB471411A true GB471411A (en) 1937-09-03

Family

ID=19786467

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6717/37A Expired GB471411A (en) 1936-03-09 1937-03-06 Improvements in and relating to electric discharge tubes

Country Status (1)

Country Link
GB (1) GB471411A (en)

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