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GB189878A - Improvements in and relating to electric arc lamps and other electrical discharge devices - Google Patents

Improvements in and relating to electric arc lamps and other electrical discharge devices

Info

Publication number
GB189878A
GB189878A GB2405721A GB2405721A GB189878A GB 189878 A GB189878 A GB 189878A GB 2405721 A GB2405721 A GB 2405721A GB 2405721 A GB2405721 A GB 2405721A GB 189878 A GB189878 A GB 189878A
Authority
GB
United Kingdom
Prior art keywords
relating
winding
electric arc
electrical discharge
discharge devices
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
GB2405721A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Priority to GB2405721A priority Critical patent/GB189878A/en
Publication of GB189878A publication Critical patent/GB189878A/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
    • H05B41/14—Circuit arrangements
    • H05B41/16—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies
    • H05B41/18—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having a starting switch
    • H05B41/19—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having a starting switch for lamps having an auxiliary starting electrode

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

189,878. British Thomson - Houston Co., Ltd., (General Electric Co.). Sept. 9, 1921. Mercury switches.-An electromagnetic mercury switch has an operating-winding 19, a holding winding 29 and a core 25 which, when lifted by current in the winding 19, tilts a vessel 27 containing mercury to open the circuit between contacts 17', 18' and make connection between contacts 18', 22 thereby closing a low potential circuit through the holding winding 29. The movement of the core may also operate a double-pole switch 30.
GB2405721A 1921-09-09 1921-09-09 Improvements in and relating to electric arc lamps and other electrical discharge devices Expired GB189878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2405721A GB189878A (en) 1921-09-09 1921-09-09 Improvements in and relating to electric arc lamps and other electrical discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2405721A GB189878A (en) 1921-09-09 1921-09-09 Improvements in and relating to electric arc lamps and other electrical discharge devices

Publications (1)

Publication Number Publication Date
GB189878A true GB189878A (en) 1922-12-11

Family

ID=10205673

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2405721A Expired GB189878A (en) 1921-09-09 1921-09-09 Improvements in and relating to electric arc lamps and other electrical discharge devices

Country Status (1)

Country Link
GB (1) GB189878A (en)

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