GB444384A - Improvements in and relating to electric discharge devices - Google Patents

Improvements in and relating to electric discharge devices

Info

Publication number
GB444384A
GB444384A GB24484/35A GB2448435A GB444384A GB 444384 A GB444384 A GB 444384A GB 24484/35 A GB24484/35 A GB 24484/35A GB 2448435 A GB2448435 A GB 2448435A GB 444384 A GB444384 A GB 444384A
Authority
GB
United Kingdom
Prior art keywords
envelope
metal
grid
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
GB24484/35A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB444384A publication Critical patent/GB444384A/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

  • Gas-Filled Discharge Tubes (AREA)

Abstract

444,384. Discharge apparatus. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Sept. 2, 1935, No. 24484. Convention date, Sept. 1, 1934. [Class 39 (i)] A discharge device comprises a metal envelope containing a cathode, an anode, a control electrode and a screening electrode between the anode and cathode. The envelope serves as an external screen for the anode. In an all - metal valve wherein the electrode structure is supported by two posts secured to metal headers closing a cylindrical envelope, the screen-grid is connected to one of the posts supporting the electrode structure. The screengrid lead may then be dispensed with, connection being made to the envelope. In a pentode valve, Fig. 4, the cathode 4 is connected to a metal bar 41 secured to a plate 40 which holds the lower mica disc 39 and is supported by rods 42. The suppressor grid 37 is connected to the bar 41 so that the cathode suppressor grid and envelope are at the same potential. The screen-grid 6 is provided with a lead. The grid and anode leads are taken out at opposite ends and the valve may be mounted in a metal partition screening the ends of the valve from each other.
GB24484/35A 1934-09-01 1935-09-02 Improvements in and relating to electric discharge devices Expired GB444384A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US444384XA 1934-09-01 1934-09-01

Publications (1)

Publication Number Publication Date
GB444384A true GB444384A (en) 1936-03-19

Family

ID=21932391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24484/35A Expired GB444384A (en) 1934-09-01 1935-09-02 Improvements in and relating to electric discharge devices

Country Status (1)

Country Link
GB (1) GB444384A (en)

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