GB542853A - Improvements in circuit arrangements for operating electric discharge lamps - Google Patents

Improvements in circuit arrangements for operating electric discharge lamps

Info

Publication number
GB542853A
GB542853A GB15986/40A GB1598640A GB542853A GB 542853 A GB542853 A GB 542853A GB 15986/40 A GB15986/40 A GB 15986/40A GB 1598640 A GB1598640 A GB 1598640A GB 542853 A GB542853 A GB 542853A
Authority
GB
United Kingdom
Prior art keywords
lamp
coil
electric discharge
discharge lamps
discharge
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
GB15986/40A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB542853A publication Critical patent/GB542853A/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

542,853. Supply systems for discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 1, 1940, No. 15986. Convention date, Nov. 1, 1939. [Class 38 (iv)] [Also in Group XL] An electric discharge lamp 10 whose thermionic electrodes or the heaters therefor have to be preheated at starting is arranged with a glow discharge lamp 14 and vibrator coil 22 in series with the electrodes 11, 111 ; the contacts 23, 24 of the alternating current vibrator when closed shunt both the lamp 14 and coil 22 and cause a surge from the series coil 13 through the lamp to start the discharge. When the lamp is running the lamp 14 and coil 22 are out of circuit. U.S.A. Specification 1,951,112 is referred to. The Specification as open to inspection under Sect: 91 also shows an arrangement using a bimetallic switch with a glow discharge device. This subject-matter does not appear in the Specification as accepted.
GB15986/40A 1939-11-01 1940-11-01 Improvements in circuit arrangements for operating electric discharge lamps Expired GB542853A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US542853XA 1939-11-01 1939-11-01

Publications (1)

Publication Number Publication Date
GB542853A true GB542853A (en) 1942-01-29

Family

ID=21989998

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15986/40A Expired GB542853A (en) 1939-11-01 1940-11-01 Improvements in circuit arrangements for operating electric discharge lamps

Country Status (1)

Country Link
GB (1) GB542853A (en)

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