GB239860A - Improvements in or relating to electroionic discharge tubes - Google Patents

Improvements in or relating to electroionic discharge tubes

Info

Publication number
GB239860A
GB239860A GB22559/25A GB2255925A GB239860A GB 239860 A GB239860 A GB 239860A GB 22559/25 A GB22559/25 A GB 22559/25A GB 2255925 A GB2255925 A GB 2255925A GB 239860 A GB239860 A GB 239860A
Authority
GB
United Kingdom
Prior art keywords
gas
filament
electroionic
relating
vacuum
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
GB22559/25A
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.)
Edison Swan Electric Co Ltd
Original Assignee
Edison Swan Electric 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 Edison Swan Electric Co Ltd filed Critical Edison Swan Electric Co Ltd
Publication of GB239860A publication Critical patent/GB239860A/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
    • H01J19/68—Specified gas introduced into the tube at low pressure, e.g. for reducing or influencing space charge

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

239,860. Edison Swan Electric Co., Ltd., (Assignees of Radio-R÷hren-Laboratorium Dr. G. Nickel Ges.). Sept. 9, 1924, [Convention date]. Void '[Published under Sect. 91 of the Act]. Vacuum tubes.-A valve has a gas filling at a critical pressure such that a sharply-defined luminous aureole is produced around the electrodes during operation. The bulb is highly evacuated and the gas admitted to the required pressure, for instance 0.1 to 1 mm. of mercury in the case of hydrogen. An oxide-coated filament may be used. It is stated that the luminous discharge produces a photo-electric effect on the filament. The vacuum may be regulated by gas absorbing and evolving substances.
GB22559/25A 1924-09-09 1925-09-09 Improvements in or relating to electroionic discharge tubes Expired GB239860A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE239860X 1924-09-09

Publications (1)

Publication Number Publication Date
GB239860A true GB239860A (en) 1925-11-12

Family

ID=5903967

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22559/25A Expired GB239860A (en) 1924-09-09 1925-09-09 Improvements in or relating to electroionic discharge tubes

Country Status (1)

Country Link
GB (1) GB239860A (en)

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