GB824906A - Improvements in or relating to an operating circuit for electrical discharge lamps - Google Patents

Improvements in or relating to an operating circuit for electrical discharge lamps

Info

Publication number
GB824906A
GB824906A GB13645/58A GB1364558A GB824906A GB 824906 A GB824906 A GB 824906A GB 13645/58 A GB13645/58 A GB 13645/58A GB 1364558 A GB1364558 A GB 1364558A GB 824906 A GB824906 A GB 824906A
Authority
GB
United Kingdom
Prior art keywords
transformer
discharge lamps
operating circuit
lamp
relating
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
GB13645/58A
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.)
Engelhard Industries Inc
Original Assignee
Engelhard Industries Inc
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 Engelhard Industries Inc filed Critical Engelhard Industries Inc
Publication of GB824906A publication Critical patent/GB824906A/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
    • H05B41/20—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 no starting switch
    • H05B41/23—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 no starting switch for lamps not having an auxiliary starting electrode
    • H05B41/231—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 no starting switch for lamps not having an auxiliary starting electrode for high-pressure lamps

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

824,906. Starting discharge lamps. ENGELHARD INDUSTRIES Inc. April 29, 1958 [Oct. 15, 1957], No. 13645/58. Class 38 (4). In a starting and operating circuit for a highpressure vapour arc lamp, ignition of the lamp 8 is effected by the injection, via transformer 16, of R.F. pulses generated in the spark gap 18 by an A.C. supply from the transformer 10. The primary of the transformer 10 is connected to the lines 2 and 6 and has in series a secondary winding of the transformer 22. When power is connected the volt drop across the resistor 4 is negligible and the transformer 10 receives the full supply voltage. When the lamp strikes, the voltage across the lines 2 and 6 falls and from it is subtracted the volt drop across the resistor 4, the result being supplied to the transformer 10 so that sparks no longer occur in the spark gap 18.
GB13645/58A 1957-10-15 1958-04-29 Improvements in or relating to an operating circuit for electrical discharge lamps Expired GB824906A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US824906XA 1957-10-15 1957-10-15

Publications (1)

Publication Number Publication Date
GB824906A true GB824906A (en) 1959-12-09

Family

ID=22171553

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13645/58A Expired GB824906A (en) 1957-10-15 1958-04-29 Improvements in or relating to an operating circuit for electrical discharge lamps

Country Status (1)

Country Link
GB (1) GB824906A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2420893A1 (en) * 1978-03-22 1979-10-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh HIGH PRESSURE DISCHARGE LAMP STARTING APPARATUS
GB2172451A (en) * 1985-02-07 1986-09-17 El Co Villamos Keszulekek Es S Circuit for igniting and lighting a high pressure discharge lamp
EP0314178A1 (en) * 1987-10-28 1989-05-03 Zumtobel Aktiengesellschaft Ignition circuit for high-pressure met2l vapour discharge lamps
EP1054579A2 (en) * 1999-05-20 2000-11-22 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit, associated electric system as well as discharge lamp with such a circuit, and process for operating such a discharge lamp

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2420893A1 (en) * 1978-03-22 1979-10-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh HIGH PRESSURE DISCHARGE LAMP STARTING APPARATUS
GB2172451A (en) * 1985-02-07 1986-09-17 El Co Villamos Keszulekek Es S Circuit for igniting and lighting a high pressure discharge lamp
US4749914A (en) * 1985-02-07 1988-06-07 El-Co Villamos Keszulekek Es Szerelesi Anyagok Gyara Circuit system for igniting and operating a high-pressure discharge lamp, particularly a sodium vapor lamp
GB2172451B (en) * 1985-02-07 1989-06-14 El Co Villamos Keszulekek Es S Circuit system for igniting and lighting a high-pressure discharge lamp particulary a sodium vapour lamp
EP0314178A1 (en) * 1987-10-28 1989-05-03 Zumtobel Aktiengesellschaft Ignition circuit for high-pressure met2l vapour discharge lamps
EP1054579A2 (en) * 1999-05-20 2000-11-22 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit, associated electric system as well as discharge lamp with such a circuit, and process for operating such a discharge lamp
EP1054579A3 (en) * 1999-05-20 2004-06-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit, associated electric system as well as discharge lamp with such a circuit, and process for operating such a discharge lamp

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