GB626412A - Improvements in or relating to electro-magnetic ignition devices intended for use with electric discharge tubes filled with gas and/or vapour - Google Patents

Improvements in or relating to electro-magnetic ignition devices intended for use with electric discharge tubes filled with gas and/or vapour

Info

Publication number
GB626412A
GB626412A GB16623/47A GB1662347A GB626412A GB 626412 A GB626412 A GB 626412A GB 16623/47 A GB16623/47 A GB 16623/47A GB 1662347 A GB1662347 A GB 1662347A GB 626412 A GB626412 A GB 626412A
Authority
GB
United Kingdom
Prior art keywords
lamp
interrupter
coil
starter
vapour
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
GB16623/47A
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
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 Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB626412A publication Critical patent/GB626412A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/06—Starting switches thermal only

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

626,412. Control systems for space discharge lamps. PHILIPS LAMPS, Ltd. June 24, 1947, No. 16623. Convention date, June 27, 1946. [Class 38 (iv)] [Also in Group XXXVII] An electromagnetic starter connected across a discharge lamp 1 and comprising a coil 11 shunted by normally open contacts 13, 14 which repeatedly close and re-open until the lamp starts, has included in the contact circuit a thermal interrupter comprising a bimetallic member 17 heated by a resistance or glow discharge tube 20 included in the coil circuit, or by the heat generated in the coil 11 (see Group XXXVII) so as to open contacts 18, 19 after a predetermined period, in the event of a lamp failure, and so prevent repeated operation of the starter. The interrupter and starter are inoperative at the reduced voltage existing across the lamp when running. The light emitted by the resistance or, glow discharge tube 20 may be made perceptible to indicate that the interrupter has operated. The moving contact 13 may co-operate with contact 18 and so dispense with contacts 14, 19.
GB16623/47A 1946-06-27 1947-06-24 Improvements in or relating to electro-magnetic ignition devices intended for use with electric discharge tubes filled with gas and/or vapour Expired GB626412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL626412X 1946-06-27

Publications (1)

Publication Number Publication Date
GB626412A true GB626412A (en) 1949-07-14

Family

ID=19788587

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16623/47A Expired GB626412A (en) 1946-06-27 1947-06-24 Improvements in or relating to electro-magnetic ignition devices intended for use with electric discharge tubes filled with gas and/or vapour

Country Status (1)

Country Link
GB (1) GB626412A (en)

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