GB496037A - Improvements in or relating to electric high-pressure metal-vapour discharge tubes - Google Patents

Improvements in or relating to electric high-pressure metal-vapour discharge tubes

Info

Publication number
GB496037A
GB496037A GB20020/38A GB2002038A GB496037A GB 496037 A GB496037 A GB 496037A GB 20020/38 A GB20020/38 A GB 20020/38A GB 2002038 A GB2002038 A GB 2002038A GB 496037 A GB496037 A GB 496037A
Authority
GB
United Kingdom
Prior art keywords
envelope
relating
discharge tubes
july
pressure metal
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
GB20020/38A
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 GB496037A publication Critical patent/GB496037A/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

  • Discharge Lamp (AREA)

Abstract

496,037. Discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. July 6, 1938, No. 20020. Convention date, July 9, 1937. [Class 39 (i)] A high-pressure metalvapour discharge tube is arranged inside a closed envelope also containing a resistance in circuit with an auxiliary elec trode and the resistance is connected to the supply conductor of a main electrode outside the envelope. In the form shown, the resist ance 13 connected to the auxiliary electrode 4 is supported in the nitro gen filled envelope 5 by wire 14 secured in the pinch 11, the wire 14 being connected outside the bulb to the lead 15 of the main electrode 2. The tube has a rare gas filling in addition to mercury.
GB20020/38A 1937-07-09 1938-07-06 Improvements in or relating to electric high-pressure metal-vapour discharge tubes Expired GB496037A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE203800X 1937-07-09

Publications (1)

Publication Number Publication Date
GB496037A true GB496037A (en) 1938-11-23

Family

ID=5778448

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20020/38A Expired GB496037A (en) 1937-07-09 1938-07-06 Improvements in or relating to electric high-pressure metal-vapour discharge tubes

Country Status (4)

Country Link
CH (1) CH203800A (en)
FR (1) FR841633A (en)
GB (1) GB496037A (en)
NL (1) NL49097C (en)

Also Published As

Publication number Publication date
FR841633A (en) 1939-05-24
NL49097C (en)
CH203800A (en) 1939-03-31

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