GB898580A - Improvements in or relating to circuit arrangements for operating low pressure electric discharge lamps - Google Patents

Improvements in or relating to circuit arrangements for operating low pressure electric discharge lamps

Info

Publication number
GB898580A
GB898580A GB28681/59A GB2868159A GB898580A GB 898580 A GB898580 A GB 898580A GB 28681/59 A GB28681/59 A GB 28681/59A GB 2868159 A GB2868159 A GB 2868159A GB 898580 A GB898580 A GB 898580A
Authority
GB
United Kingdom
Prior art keywords
transistors
source
winding
transistor
volts
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
GB28681/59A
Inventor
Mian Frederick Davies
Donald Dunthorne
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 PLC
Original Assignee
General Electric Co PLC
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 PLC filed Critical General Electric Co PLC
Priority to GB28681/59A priority Critical patent/GB898580A/en
Publication of GB898580A publication Critical patent/GB898580A/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
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5383—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
    • H02M7/53832—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement in a push-pull arrangement
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Abstract

898,580. Discharge lamp circuits. GENERAL ELECTRIC CO. Ltd. Sept. 2, 1960 [Aug. 21, 1959], No. 28681/59. Addition to 854,206. Class 38 (4). [Also in Group XL (c)] In an arrangement as disclosed in the parent Specification wherein a discharge lamp 14 is supplied from a D.C. source through a transistor oscillator, the oscillator is modified for use on higher D.C. voltages by connecting the collectors and emitters of at least one pair of transistors 1, 2 serially across the D.C. source 3. The mid point of the transistors is connected through the primary winding 9 of a transformer 10 to a voltage divider comprising equal resistors 6, 8 and capacitors 5, 7 also across the D.C. source 3. Positive feedback is provided by secondary windings 19, 20 connected to the transistors through CR circuits 21-24. The discharge current is provided by a secondary winding 11 resonated by a capacitor 12. The transistors 1, 2 conduct alternately in push pull thus causing currents in alternate directions through the winding 9. The transistors operate under class C conditions giving a square-wave output before the lamp strikes and a sinusoidal waveform after. The arrangement is stated to operate reliably in the range of 50 to 40 volts D.C. for the source 3. In another embodiment (Fig. 2, not shown) for operation on 110 volts D.C. each transistor is replaced by two seriesconnected transistors with a CR potential divider connected across each transistor, the centre point of the array being connected through the primary winding 9 to another potential divider in the same manner as shown in Fig. 1. Typical component values and winding details for the transformer are given in the Specification. Specification 856,105 also is referred to.
GB28681/59A 1959-08-21 1959-08-21 Improvements in or relating to circuit arrangements for operating low pressure electric discharge lamps Expired GB898580A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB28681/59A GB898580A (en) 1959-08-21 1959-08-21 Improvements in or relating to circuit arrangements for operating low pressure electric discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28681/59A GB898580A (en) 1959-08-21 1959-08-21 Improvements in or relating to circuit arrangements for operating low pressure electric discharge lamps

Publications (1)

Publication Number Publication Date
GB898580A true GB898580A (en) 1962-06-14

Family

ID=10279454

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28681/59A Expired GB898580A (en) 1959-08-21 1959-08-21 Improvements in or relating to circuit arrangements for operating low pressure electric discharge lamps

Country Status (1)

Country Link
GB (1) GB898580A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306593A1 (en) * 1975-04-02 1976-10-29 Electrides Corp SUPPLY CIRCUIT FOR IGNITION OF FLUORESCENT TUBES AND GAS DISCHARGE DEVICES
FR2382794A1 (en) * 1977-03-04 1978-09-29 Sanyo Electric Co POWER SUPPLY
FR2468277A1 (en) * 1979-10-16 1981-04-30 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh BALLAST FOR LOW PRESSURE DISCHARGE LAMPS
DE3107031A1 (en) * 1980-03-18 1981-12-24 Kumho Electric Inc "INVERTER CIRCUIT, ESPECIALLY FOR THE OPERATION OF FLUORESCENT LAMPS"
EP0124209A1 (en) * 1983-03-04 1984-11-07 Astec Components Ltd. Electronic ballast-inverter circuit
GB2269279A (en) * 1992-08-01 1994-02-02 Coolite Ltd Fluorescent Tube Starting and Operating Circuit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306593A1 (en) * 1975-04-02 1976-10-29 Electrides Corp SUPPLY CIRCUIT FOR IGNITION OF FLUORESCENT TUBES AND GAS DISCHARGE DEVICES
FR2382794A1 (en) * 1977-03-04 1978-09-29 Sanyo Electric Co POWER SUPPLY
FR2468277A1 (en) * 1979-10-16 1981-04-30 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh BALLAST FOR LOW PRESSURE DISCHARGE LAMPS
DE2941822A1 (en) * 1979-10-16 1981-04-30 Patra Patent Treuhand Ballast arrangement for operating low-pressure discharge lamps
DE3107031A1 (en) * 1980-03-18 1981-12-24 Kumho Electric Inc "INVERTER CIRCUIT, ESPECIALLY FOR THE OPERATION OF FLUORESCENT LAMPS"
EP0124209A1 (en) * 1983-03-04 1984-11-07 Astec Components Ltd. Electronic ballast-inverter circuit
GB2269279A (en) * 1992-08-01 1994-02-02 Coolite Ltd Fluorescent Tube Starting and Operating Circuit

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