GB1529824A - Ballast circuit for gaseous discharge lamps - Google Patents

Ballast circuit for gaseous discharge lamps

Info

Publication number
GB1529824A
GB1529824A GB43788/75A GB4378875A GB1529824A GB 1529824 A GB1529824 A GB 1529824A GB 43788/75 A GB43788/75 A GB 43788/75A GB 4378875 A GB4378875 A GB 4378875A GB 1529824 A GB1529824 A GB 1529824A
Authority
GB
United Kingdom
Prior art keywords
transistor
lamp
current
supplied
resistor
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
GB43788/75A
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
Priority to GB43788/75A priority Critical patent/GB1529824A/en
Publication of GB1529824A publication Critical patent/GB1529824A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/1563—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators without using an external clock
    • 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
    • H05B41/288—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 and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/2885—Static converters especially adapted therefor; Control thereof
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

1529824 Automatic control of current and power GENERAL ELECTRIC CO 24 Oct 1975 43788/75 Heading G3R [Also in Division H2] A circuit for regulating the current supplied to a discharge lamp 63 comprises a transistor 66, a current sensing resistor 67 and an energy storing inductance 70. Initially a capacitor 75 is charged from a D.C. supply 64, 65 via a high value resistor 76 until a silicon bilateral switch 78 breaks down causing transistors 79, 124 and 66 to conduct. Current is supplied to the lamp via the inductance 70 which is constituted by the primary winding of a transformer having a secondary winding 71 which quickly charges the capacitor 75 to maintain the conduction of the transistor 66. When the current sensed by the resistor 67 reaches a predetermined level, a transistor 80 conducts thereby switching off the transistors 79, 124 and 66. The inductor 70 then discharges through the lamp until the current sensed by a resistor 74 falls to a predetermined low level whereupon the transistor 80 is switched off and the transistor 66 is switched on again. In a modified circuit shown in Fig. 6, a constant wattage is supplied to the lamp. A signal representing the lamp voltage is supplied to an input 96 of an operational amplifier 92 and when this voltage exceeds a predetermined level a signal is supplied to the input 101 of an operational amplifier 99. The input 100 of the amplifier 99 is connected to a current sensing resistor 19 and the amplifier 99 adds the signals on the inputs 100, 101 to provide a signal to a comparator 105. Of the lamp voltage increases, the comparator 105 reduces the conduction of the transistor 18 so that the lamp power remains constant.
GB43788/75A 1975-10-24 1975-10-24 Ballast circuit for gaseous discharge lamps Expired GB1529824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB43788/75A GB1529824A (en) 1975-10-24 1975-10-24 Ballast circuit for gaseous discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB43788/75A GB1529824A (en) 1975-10-24 1975-10-24 Ballast circuit for gaseous discharge lamps

Publications (1)

Publication Number Publication Date
GB1529824A true GB1529824A (en) 1978-10-25

Family

ID=10430310

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43788/75A Expired GB1529824A (en) 1975-10-24 1975-10-24 Ballast circuit for gaseous discharge lamps

Country Status (1)

Country Link
GB (1) GB1529824A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2454248A1 (en) * 1979-04-12 1980-11-07 Gen Electric MAINTENANCE CIRCUIT OF THE ARC OF A DISCHARGE LAMP
DE3111561A1 (en) * 1980-03-24 1982-04-29 Toshiba Electric Equipment Corp., Tokyo DEVICE FOR OPERATING A DISCHARGE LAMP
GB2091957A (en) * 1981-01-26 1982-08-04 Delcon Oy Voltage converter
GB2150323A (en) * 1983-11-04 1985-06-26 Ceag Electric Corp Paralleled dc power supplies sharing loads equally
GB2179510A (en) * 1985-08-10 1987-03-04 Diehl Gmbh & Co A starting and dimming circuit for a fluorescent tube
GB2212995A (en) * 1987-10-23 1989-08-02 Rockwell International Corp Fluorescent lamp dimmer
GB2261533A (en) * 1991-10-14 1993-05-19 Astec Int Ltd Indirect inductor current measurements in SMPS
FR2699341A1 (en) * 1992-12-16 1994-06-17 Europ Agence Spatiale DC-DC current converter for space applications - has two measuring resistances for measuring current flowing through inductor, and includes resistive current summator
FR2751805A1 (en) * 1996-07-24 1998-01-30 Schneider Electric Sa Self-oscillating step=down converter with complete demagnetisation
GB2333912A (en) * 1998-01-30 1999-08-04 Federal Ind Ind Group Inc Universal switching power supply
EP1178710A1 (en) * 2000-02-14 2002-02-06 Mitsubishi Denki Kabushiki Kaisha Electric discharge lamp starter and lighting system
GB2389468A (en) * 2003-01-13 2003-12-10 Sansha Electric Mfg Co Ltd Constant power lamp driver
US6819061B2 (en) 2001-12-21 2004-11-16 Sansha Electric Manufacturing Company, Limited Power supply apparatus for light source

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2454248A1 (en) * 1979-04-12 1980-11-07 Gen Electric MAINTENANCE CIRCUIT OF THE ARC OF A DISCHARGE LAMP
DE3111561A1 (en) * 1980-03-24 1982-04-29 Toshiba Electric Equipment Corp., Tokyo DEVICE FOR OPERATING A DISCHARGE LAMP
GB2091957A (en) * 1981-01-26 1982-08-04 Delcon Oy Voltage converter
GB2150323A (en) * 1983-11-04 1985-06-26 Ceag Electric Corp Paralleled dc power supplies sharing loads equally
GB2179510A (en) * 1985-08-10 1987-03-04 Diehl Gmbh & Co A starting and dimming circuit for a fluorescent tube
GB2179510B (en) * 1985-08-10 1989-08-09 Diehl Gmbh & Co A starting and dimming circuit for a fluorescent lamp
GB2212995A (en) * 1987-10-23 1989-08-02 Rockwell International Corp Fluorescent lamp dimmer
US5428286A (en) * 1991-10-14 1995-06-27 Astec International Limited Switching mode power supplies
GB2261533A (en) * 1991-10-14 1993-05-19 Astec Int Ltd Indirect inductor current measurements in SMPS
FR2699341A1 (en) * 1992-12-16 1994-06-17 Europ Agence Spatiale DC-DC current converter for space applications - has two measuring resistances for measuring current flowing through inductor, and includes resistive current summator
FR2751805A1 (en) * 1996-07-24 1998-01-30 Schneider Electric Sa Self-oscillating step=down converter with complete demagnetisation
GB2333912A (en) * 1998-01-30 1999-08-04 Federal Ind Ind Group Inc Universal switching power supply
EP1178710A1 (en) * 2000-02-14 2002-02-06 Mitsubishi Denki Kabushiki Kaisha Electric discharge lamp starter and lighting system
EP1178710A4 (en) * 2000-02-14 2005-04-13 Mitsubishi Electric Corp Electric discharge lamp starter and lighting system
US6819061B2 (en) 2001-12-21 2004-11-16 Sansha Electric Manufacturing Company, Limited Power supply apparatus for light source
GB2389468A (en) * 2003-01-13 2003-12-10 Sansha Electric Mfg Co Ltd Constant power lamp driver
GB2389468B (en) * 2003-01-13 2005-11-16 Sansha Electric Mfg Co Ltd Power supply apparatus for light source

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee