GB1108736A - A supply circuit or system for operating electric discharge lamps in series - Google Patents

A supply circuit or system for operating electric discharge lamps in series

Info

Publication number
GB1108736A
GB1108736A GB8596/66A GB859666A GB1108736A GB 1108736 A GB1108736 A GB 1108736A GB 8596/66 A GB8596/66 A GB 8596/66A GB 859666 A GB859666 A GB 859666A GB 1108736 A GB1108736 A GB 1108736A
Authority
GB
United Kingdom
Prior art keywords
series
lamps
reactor
lamp
capacitors
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
GB8596/66A
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
Publication of GB1108736A publication Critical patent/GB1108736A/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
    • H05B41/232—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
    • Y10S315/05—Starting and operating circuit for fluorescent lamp

Abstract

1,108,736. Supply systems for discharge lamps. GENERAL ELECTRIC CO. 28 Feb., 1966 [23 March, 1965], No. 8596/66. Heading H2H. Two groups of series-connected filamentheated discharge lamps L 1 -L 12 are supplied with alternating current of substantially square waveform by connecting between each group and its respective A.C. mains supply 18, 19 and 21, 22, capacitors C 1 C 2 and C 3 C 4 , each series combination of lamps and capacitors being connected in parallel with a saturable reactor X 1 X 2 arranged to saturate at a predetermined point in each half cycle of the mains supply, e.g. at or near the peak voltage. Operation of the circuit is discussed with reference to typical voltage waveforms across the capacitors, reactors and lamps, Fig. 5 (not shown), the lamp reversing suddenly in each half cycle when the reactor saturates and the capacitors discharge through the reactor-lamp circuit. The other circuit elements are conventional in construction and function. In another arrangement for two series-connected filament-heated lamps, Fig. 2 (not shown) the reactor is replaced by a five layer diode, which in turn may be replaced by other bidirectional semi-conductor switching arrangements, e.g. a silicon controlled rectifier or a four layer diode in a full wave bridge. The saturable reactor may be used as the starting transformer for the lamp circuit and such an arrangement, again for two series-connected lamps, is described, Fig. 4 (not shown). In this arrangement a further reactor (X3) is provided in series with the A.C. supply to perform the ballast current-limiting function and to isolate the lamp operating loop from the A.C. supply when the saturable reactor saturates to effect reversal of the lamp current.
GB8596/66A 1965-03-23 1966-02-28 A supply circuit or system for operating electric discharge lamps in series Expired GB1108736A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US442068A US3371245A (en) 1965-03-23 1965-03-23 Discharge lamp circuit having series condenser and shunt switch for discharging condenser through lamp

Publications (1)

Publication Number Publication Date
GB1108736A true GB1108736A (en) 1968-04-03

Family

ID=23755416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8596/66A Expired GB1108736A (en) 1965-03-23 1966-02-28 A supply circuit or system for operating electric discharge lamps in series

Country Status (3)

Country Link
US (1) US3371245A (en)
DE (1) DE1539413A1 (en)
GB (1) GB1108736A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0028986A1 (en) * 1979-11-12 1981-05-20 Henri Abadie Feeding device for a discharge lamp with preheating circuit
FR2469856A2 (en) * 1978-11-10 1981-05-22 Abadie Henri Discharge lamp supply with preheating circuit - switched by thermistor and spark gap in series between tube electrodes
DE3221701A1 (en) * 1981-06-10 1982-12-30 General Electric Co., Schenectady, N.Y. CIRCUIT ARRANGEMENT FOR STARTING AND OPERATING FLUORESCENT LAMPS

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7502577A (en) * 1975-03-05 1976-09-07 Philips Nv DEVICE EQUIPPED WITH A DISCHARGE LAMP.
JPS54123957A (en) * 1978-03-18 1979-09-26 Matsushita Electric Works Ltd Stabilizer for copier
US5039920A (en) * 1988-03-04 1991-08-13 Royce Electronic Products, Inc. Method of operating gas-filled tubes
CN114285178B (en) * 2021-12-03 2023-08-18 西安交通大学 Electromagnetic induction type magnetic energy collector based on capacitive energy storage and power lifting method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125705A (en) * 1964-03-17 Gas discharge lamp circuits employing
US3135894A (en) * 1960-10-28 1964-06-02 Westinghouse Electric Corp Circuit arrangement for energizing discharge devices
US3250952A (en) * 1962-04-09 1966-05-10 Gen Electric Ballast apparatus for starting and operating a pair of fluorescent lamps

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469856A2 (en) * 1978-11-10 1981-05-22 Abadie Henri Discharge lamp supply with preheating circuit - switched by thermistor and spark gap in series between tube electrodes
EP0028986A1 (en) * 1979-11-12 1981-05-20 Henri Abadie Feeding device for a discharge lamp with preheating circuit
DE3221701A1 (en) * 1981-06-10 1982-12-30 General Electric Co., Schenectady, N.Y. CIRCUIT ARRANGEMENT FOR STARTING AND OPERATING FLUORESCENT LAMPS

Also Published As

Publication number Publication date
DE1539413A1 (en) 1969-10-02
US3371245A (en) 1968-02-27

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