GB582162A - Improvements in thermionic valves adapted to operate at very high frequencies - Google Patents

Improvements in thermionic valves adapted to operate at very high frequencies

Info

Publication number
GB582162A
GB582162A GB472440A GB472440A GB582162A GB 582162 A GB582162 A GB 582162A GB 472440 A GB472440 A GB 472440A GB 472440 A GB472440 A GB 472440A GB 582162 A GB582162 A GB 582162A
Authority
GB
United Kingdom
Prior art keywords
thermionic valves
operate
high frequencies
valves adapted
cathode
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
GB472440A
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 GB472440A priority Critical patent/GB582162A/en
Publication of GB582162A publication Critical patent/GB582162A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/16—Cathodes heated directly by an electric current characterised by the shape

Landscapes

  • Electron Tubes For Measurement (AREA)

Abstract

582,162. Thermionic valves. M-O VALVE CO., Ltd., and WARREN, G. W. March 13, 1940, No. 4724. [Class 39 (i)] The cathode of ultra high frequency thermionic valves is a helix 1 of thoriated tungsten wire, wound so that the convolutions are spaced very close to one another, as at 4. and ground on one side so as to present a substantially smooth face to an adjacent co-operating electrode, which may be a grid or anode 2 and may be outside or inside the cathode.
GB472440A 1940-03-13 1940-03-13 Improvements in thermionic valves adapted to operate at very high frequencies Expired GB582162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB472440A GB582162A (en) 1940-03-13 1940-03-13 Improvements in thermionic valves adapted to operate at very high frequencies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB472440A GB582162A (en) 1940-03-13 1940-03-13 Improvements in thermionic valves adapted to operate at very high frequencies

Publications (1)

Publication Number Publication Date
GB582162A true GB582162A (en) 1946-11-07

Family

ID=9782584

Family Applications (1)

Application Number Title Priority Date Filing Date
GB472440A Expired GB582162A (en) 1940-03-13 1940-03-13 Improvements in thermionic valves adapted to operate at very high frequencies

Country Status (1)

Country Link
GB (1) GB582162A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1037021B (en) * 1954-07-02 1958-08-21 Siemens Ag Process for the production of cathodes for electrical discharge vessels
DE1063718B (en) * 1957-10-04 1959-08-20 Philips Nv Equipotential cathode with a ground surface for an electrical discharge tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1037021B (en) * 1954-07-02 1958-08-21 Siemens Ag Process for the production of cathodes for electrical discharge vessels
DE1063718B (en) * 1957-10-04 1959-08-20 Philips Nv Equipotential cathode with a ground surface for an electrical discharge tube

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