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GB919753A - Circuit arrangement for energizing electric discharge devices - Google Patents

Circuit arrangement for energizing electric discharge devices

Info

Publication number
GB919753A
GB919753A GB22266/61A GB2226661A GB919753A GB 919753 A GB919753 A GB 919753A GB 22266/61 A GB22266/61 A GB 22266/61A GB 2226661 A GB2226661 A GB 2226661A GB 919753 A GB919753 A GB 919753A
Authority
GB
United Kingdom
Prior art keywords
lamp
ballast
transformer
source
circuit arrangement
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
GB22266/61A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB919753A publication Critical patent/GB919753A/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
    • H05B41/24—Circuit arrangements in which the lamp is fed by high frequency AC, or with separate oscillator frequency
    • 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
    • H05B41/232—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 low-pressure lamps
    • H05B41/2325—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 low-pressure lamps provided with pre-heating electrodes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/02—High frequency starting operation for fluorescent lamp

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

919,753. Circuit arrangements for discharge lamps. WESTINGHOUSE ELECTRIC CORPORATION. June 20, 1961 [July 18, 1960], No. 22266/61. Class 38 (4). The supply circuit for a fluorescent lamp 12 comprises a high-frequency square-wave source 14 connected to a transformer 20 and to a ballast 34, the transformer having a secondary winding 26 providing a starting voltage for the lamp 12 and windings 28, 30 energizing its heating filaments 16, 18. Passage of running current to the lamp through the transformer 20 is prevented by a capacitor 32 which impedes all but the higher harmonic current components, and these in turn are impeded by the ballast 34 to prevent the high starting voltage from reaching the source 14, the ballast 34 thus delivering running current to the lamp less square than the source 14. Capacitance means for power factor correction may be connected across terminals 36, 38.
GB22266/61A 1960-07-18 1961-06-20 Circuit arrangement for energizing electric discharge devices Expired GB919753A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43484A US3089981A (en) 1960-07-18 1960-07-18 Circuit arrangement for energizing discharge devices

Publications (1)

Publication Number Publication Date
GB919753A true GB919753A (en) 1963-02-27

Family

ID=21927392

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22266/61A Expired GB919753A (en) 1960-07-18 1961-06-20 Circuit arrangement for energizing electric discharge devices

Country Status (2)

Country Link
US (1) US3089981A (en)
GB (1) GB919753A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305697A (en) * 1963-11-12 1967-02-21 Gen Electric Ballast apparatus with air-core inductor
US3824428A (en) * 1969-07-23 1974-07-16 Lutron Electronics Co High frequency fluorescent tube lighting circuit and a-c driving circuit therefor
US3701925A (en) * 1970-02-28 1972-10-31 Blackwell Electronics Ind Co L Instantaneous starting system for discharge lamp
US3954316A (en) * 1975-01-08 1976-05-04 Litton Systems, Inc. Electrical apparatus and method for reducing power consumption of a fluorescent lamp system
US4613792A (en) * 1984-10-10 1986-09-23 Kroessler Peter R Symmetrical load power reduction device for lighting fixtures

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462336A (en) * 1945-05-18 1949-02-22 Gen Electric Electric discharge device and method of operation

Also Published As

Publication number Publication date
US3089981A (en) 1963-05-14

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