GB388302A - Improvements in or relating to luminous electric discharge tubes - Google Patents

Improvements in or relating to luminous electric discharge tubes

Info

Publication number
GB388302A
GB388302A GB21301/32A GB2130132A GB388302A GB 388302 A GB388302 A GB 388302A GB 21301/32 A GB21301/32 A GB 21301/32A GB 2130132 A GB2130132 A GB 2130132A GB 388302 A GB388302 A GB 388302A
Authority
GB
United Kingdom
Prior art keywords
tube
wires
electric discharge
vapour
consist
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
GB21301/32A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB388302A publication Critical patent/GB388302A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
    • H01J61/545—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode inside the vessel

Landscapes

  • Physical Vapour Deposition (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

388,302. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. July 28, 1932, No. 21301. Convention date, Aug. 20, 1931. [Class 39 (i).] A luminous electric discharge tube is provided with one or more auxiliary electrodes in the form of wires extending longitudinally of the tube and, at least partly, superficially oxidized. The wires may consist of zirconium or aluminium oxidized electrolytically. In the example the discharge tube 1 is provided with incandescent cathodes 3 consisting of helically wound wires, and two auxiliary electrodes 4 extending in the longitudinal direction of the tube and connected to one another at their inner ends by an insulating tube 5 of porcelain, their outer ends being extended out through pinches 6. The tube may contain a filling of a rare gas at a pressure of about 8 m.m. of mercury, or the filling may consist of a vapour or a mixture of gas and vapour. In a modification the tube contains two cylindrical cold electrodes, with an auxiliary electrode in the form of a superficially oxidized metal rod extending from one electrode nearly to the other. Specification 388,665 is referred to.
GB21301/32A 1931-08-20 1932-07-28 Improvements in or relating to luminous electric discharge tubes Expired GB388302A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE388302X 1931-08-20

Publications (1)

Publication Number Publication Date
GB388302A true GB388302A (en) 1933-02-23

Family

ID=6371254

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21301/32A Expired GB388302A (en) 1931-08-20 1932-07-28 Improvements in or relating to luminous electric discharge tubes

Country Status (4)

Country Link
US (1) US2004578A (en)
BE (1) BE390209A (en)
FR (1) FR740954A (en)
GB (1) GB388302A (en)

Also Published As

Publication number Publication date
FR740954A (en) 1933-02-03
US2004578A (en) 1935-06-11
BE390209A (en)

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