GB482385A - Improvements in or relating to thermionic tetrodes - Google Patents

Improvements in or relating to thermionic tetrodes

Info

Publication number
GB482385A
GB482385A GB2711236A GB2711236A GB482385A GB 482385 A GB482385 A GB 482385A GB 2711236 A GB2711236 A GB 2711236A GB 2711236 A GB2711236 A GB 2711236A GB 482385 A GB482385 A GB 482385A
Authority
GB
United Kingdom
Prior art keywords
anode
screen
mms
valve
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
GB2711236A
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.)
MO Valve Co Ltd
Original Assignee
MO Valve 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 MO Valve Co Ltd filed Critical MO Valve Co Ltd
Priority to GB2711236A priority Critical patent/GB482385A/en
Publication of GB482385A publication Critical patent/GB482385A/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

  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

482,385. Thermionic valves. M-0 VALVE CO., Ltd., and TRELOAR, L. R. G. Oct. 6, 1936, No. 27112. Drawings to Specification. [Class 39 (i)] In an output tetrode the maximum dimension of the anode does not exceed 40 mms. and the distance between the control grid and screen is made so small, preferably less than 0À8 mm., that the anode current-anode voltage characteristics are free from inflections over the range used in operation, even when the screen grid voltage is as high as 250 volts. Penetration of the field of the control grid into the anode-screen space assists in the production of the necessary potential minimum, which could not be produced by the prescribed anode spacing alone. In an example, an indirectlyheated cathode is surrounded successively by oval control and screen grids having least internal diameters of 3À18 and 4À33 mms. respectively, and by a cylindrical anode 25 mms. in diameter. Full dimensions of the valve are given and its characteristics are compared with those of a standard pentode. Specifications 423,932 and 441,849 are referred to. Reference has been directed by the Comptroller to Specification 423,932.
GB2711236A 1936-10-06 1936-10-06 Improvements in or relating to thermionic tetrodes Expired GB482385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2711236A GB482385A (en) 1936-10-06 1936-10-06 Improvements in or relating to thermionic tetrodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2711236A GB482385A (en) 1936-10-06 1936-10-06 Improvements in or relating to thermionic tetrodes

Publications (1)

Publication Number Publication Date
GB482385A true GB482385A (en) 1938-03-29

Family

ID=10254387

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2711236A Expired GB482385A (en) 1936-10-06 1936-10-06 Improvements in or relating to thermionic tetrodes

Country Status (1)

Country Link
GB (1) GB482385A (en)

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