GB522496A - Improvements in or relating to thermionic valves - Google Patents

Improvements in or relating to thermionic valves

Info

Publication number
GB522496A
GB522496A GB3636038A GB3636038A GB522496A GB 522496 A GB522496 A GB 522496A GB 3636038 A GB3636038 A GB 3636038A GB 3636038 A GB3636038 A GB 3636038A GB 522496 A GB522496 A GB 522496A
Authority
GB
United Kingdom
Prior art keywords
cathode
velocities
barriers
photo
thermionic
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
GB3636038A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB3636038A priority Critical patent/GB522496A/en
Publication of GB522496A publication Critical patent/GB522496A/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

  • Electron Beam Exposure (AREA)

Abstract

522,496. Thermionic valves ; photo-electric cells. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and BELL, D. A. Dec. 13, 1938, No. 36360. [Class 39 (i)] In order to select from among the electrons discharged from the cathode 1 of a discharge device working under space-charge conditions, such as a valve those the velocities of which are within a certain range the valve is subjected to an axial magnetic field and a number of barriers 2 are so arranged as to intercept the electrons with undesired velocities. The barriers may be integral with the cathode, or they may be at a slightly differential potential or they may be of non-conducting material; in these cases they should be as close to the cathode as possible. The thermionic cathode 1 may be replaced by a radio-active or photo-electric cathode.
GB3636038A 1938-12-13 1938-12-13 Improvements in or relating to thermionic valves Expired GB522496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3636038A GB522496A (en) 1938-12-13 1938-12-13 Improvements in or relating to thermionic valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3636038A GB522496A (en) 1938-12-13 1938-12-13 Improvements in or relating to thermionic valves

Publications (1)

Publication Number Publication Date
GB522496A true GB522496A (en) 1940-06-19

Family

ID=10387427

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3636038A Expired GB522496A (en) 1938-12-13 1938-12-13 Improvements in or relating to thermionic valves

Country Status (1)

Country Link
GB (1) GB522496A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565410A (en) * 1944-09-20 1951-08-21 Philco Corp Controllable electrical delay means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565410A (en) * 1944-09-20 1951-08-21 Philco Corp Controllable electrical delay means

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