NL7702155A - Met halfgeleiders uitgeruste, dubbelstandige om- vormerschakeling voor het starten en belasten van gasontladingslampen. - Google Patents

Met halfgeleiders uitgeruste, dubbelstandige om- vormerschakeling voor het starten en belasten van gasontladingslampen.

Info

Publication number
NL7702155A
NL7702155A NL7702155A NL7702155A NL7702155A NL 7702155 A NL7702155 A NL 7702155A NL 7702155 A NL7702155 A NL 7702155A NL 7702155 A NL7702155 A NL 7702155A NL 7702155 A NL7702155 A NL 7702155A
Authority
NL
Netherlands
Prior art keywords
semi
starting
double
gas discharge
inverter circuit
Prior art date
Application number
NL7702155A
Other languages
English (en)
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of NL7702155A publication Critical patent/NL7702155A/nl

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48Conversion 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
    • H02M7/53Conversion 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
    • H02M7/537Conversion 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
    • H02M7/5383Conversion 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
    • H02M7/53846Control circuits
    • H02M7/53862Control circuits using transistor type converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48Conversion 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
    • H02M7/53Conversion 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
    • H02M7/537Conversion 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
    • H02M7/5383Conversion 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
    • H02M7/53846Control circuits
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14Circuit arrangements
    • H05B41/26Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28Circuit 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
    • H05B41/288Circuit 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
    • H05B41/2885Static converters especially adapted therefor; Control thereof
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00Electric lamp and discharge devices: systems
    • Y10S315/02High frequency starting operation for fluorescent lamp
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00Electric lamp and discharge devices: systems
    • Y10S315/05Starting and operating circuit for fluorescent lamp

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
NL7702155A 1976-03-01 1977-02-28 Met halfgeleiders uitgeruste, dubbelstandige om- vormerschakeling voor het starten en belasten van gasontladingslampen. NL7702155A (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/662,523 US4060751A (en) 1976-03-01 1976-03-01 Dual mode solid state inverter circuit for starting and ballasting gas discharge lamps

Publications (1)

Publication Number Publication Date
NL7702155A true NL7702155A (nl) 1977-09-05

Family

ID=24658065

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7702155A NL7702155A (nl) 1976-03-01 1977-02-28 Met halfgeleiders uitgeruste, dubbelstandige om- vormerschakeling voor het starten en belasten van gasontladingslampen.

Country Status (10)

Country Link
US (1) US4060751A (nl)
JP (1) JPS52121975A (nl)
BE (1) BE851956A (nl)
CA (1) CA1095974A (nl)
DE (1) DE2705968A1 (nl)
FI (1) FI66106C (nl)
FR (1) FR2343391A1 (nl)
GB (1) GB1570927A (nl)
IT (1) IT1076597B (nl)
NL (1) NL7702155A (nl)

Families Citing this family (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119127A (en) * 1976-03-30 1977-10-06 Zuiia Asoshieiteizu Inc Device for operating gas discharge lamp
US4535271A (en) * 1976-07-26 1985-08-13 Wide-Lite International High frequency circuit for operating a high-intensity, gaseous discharge lamp
US4677345A (en) * 1980-08-14 1987-06-30 Nilssen Ole K Inverter circuits
US4857806A (en) * 1980-08-14 1989-08-15 Nilssen Ole K Self-ballasted screw-in fluorescent lamp
US4277728A (en) * 1978-05-08 1981-07-07 Stevens Luminoptics Power supply for a high intensity discharge or fluorescent lamp
US4245177A (en) * 1978-12-29 1981-01-13 General Electric Company Inverter for operating a gaseous discharge lamp
US4199710A (en) * 1979-02-12 1980-04-22 Gte Sylvania Incorporated Ballast circuit for high intensity discharge (HID) lamps
US4320325A (en) * 1979-04-12 1982-03-16 General Electric Company Circuit for starting and ballasting arc discharge lamps
US4297616A (en) * 1980-03-17 1981-10-27 Xerox Corporation Fluorescent lamp with incandescent ballasting systems
US4388562A (en) * 1980-11-06 1983-06-14 Astec Components, Ltd. Electronic ballast circuit
US4392081A (en) * 1981-07-31 1983-07-05 General Electric Company Lighting unit
US4429359A (en) * 1981-12-24 1984-01-31 General Electric Company Inverter circuit with symmetry control
US4700113A (en) * 1981-12-28 1987-10-13 North American Philips Corporation Variable high frequency ballast circuit
NL8201631A (nl) * 1982-04-20 1983-11-16 Philips Nv Gelijkstroom-wisselstroomomzetter voor het ontsteken en met wisselstroom voeden van een gas- en/of dampontladingslamp.
US5404083A (en) * 1982-08-30 1995-04-04 Nilssen; Ole K. Energy-efficient cost-effective electronic ballast
US4634932A (en) * 1983-01-18 1987-01-06 Nilssen Ole K Lighting system
US4513226A (en) * 1983-03-04 1985-04-23 Astec Components, Ltd. Electronic ballast-inverter circuit
AU2708684A (en) * 1983-05-05 1984-11-08 Dubank Electronics Pty. Ltd. Electronic ballast and starter
US4663570A (en) * 1984-08-17 1987-05-05 Lutron Electronics Co., Inc. High frequency gas discharge lamp dimming ballast
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
US4686428A (en) * 1985-08-28 1987-08-11 Innovative Controls, Incorporated High intensity discharge lamp self-adjusting ballast system with current limiters and a current feedback loop
US4682084A (en) * 1985-08-28 1987-07-21 Innovative Controls, Incorporated High intensity discharge lamp self-adjusting ballast system sensitive to the radiant energy or heat of the lamp
US4734650A (en) * 1985-09-26 1988-03-29 General Electric Company Adjusting feedback gain in a fluorescent lamp dimming control
US4717863A (en) * 1986-02-18 1988-01-05 Zeiler Kenneth T Frequency modulation ballast circuit
US4999547A (en) * 1986-09-25 1991-03-12 Innovative Controls, Incorporated Ballast for high pressure sodium lamps having constant line and lamp wattage
GB2195843A (en) * 1986-09-29 1988-04-13 Re Gen Prod Ltd Energy transformation apparatus
DE3715162A1 (de) * 1987-05-07 1988-11-17 Bosch Gmbh Robert Schaltungsanordnung zum betrieb einer gasentladungslampe an einer gleichstromquelle
US4777410A (en) * 1987-06-22 1988-10-11 Innovative Controls, Inc. Ballast striker circuit
US5099407A (en) * 1990-09-24 1992-03-24 Thorne Richard L Inverter with power factor correction circuit
JPH0555748U (ja) * 1991-12-25 1993-07-23 株式会社安川電機 相間絶縁装置
DE69307427T2 (de) * 1992-08-20 1997-07-17 Philips Electronics Nv Verschaltgerät für eine Lampe
US5545955A (en) * 1994-03-04 1996-08-13 International Rectifier Corporation MOS gate driver for ballast circuits
US5550436A (en) * 1994-09-01 1996-08-27 International Rectifier Corporation MOS gate driver integrated circuit for ballast circuits
GB2319677B (en) * 1996-11-19 2001-04-18 Micro Tech Ltd Lamp driver circuit and method
EP0903967A1 (en) * 1997-09-19 1999-03-24 Quality Light Electronics S.A.S. Di Francesco Celso E C. An igniter for discharge lamps
ES2212824T3 (es) 1998-09-15 2004-08-01 Quality Light Electronics S.A.S. Di Francesco Celso E C. Dispositivo de ignicion de resonancia para lamparas de descarga.
DE19924693A1 (de) * 1999-05-28 2001-01-04 Amos Lichttechnik Gmbh Elektronisches Vorschaltgerät für Kaltkathodenlampen mit Resonanzkreis zur Hochspannungserzeugung
US6274988B1 (en) * 2000-01-27 2001-08-14 R-Can Environmental Inc. Open loop current control ballast low pressure mercury germicidal UV lamps
JP4820024B2 (ja) 2001-01-10 2011-11-24 昭和薬品化工株式会社 局所麻酔用組成物
GB2371687B (en) 2001-01-25 2005-04-06 Power Gems Ltd Hot-restrike ignition system for a high-frequency high-intensity discharge lamp assembly
DE10204044A1 (de) * 2002-02-01 2003-08-14 Tridonicatco Gmbh & Co Kg Elektronisches Vorschaltgerät für Gasentladungslampe
NL1020276C2 (nl) * 2002-03-28 2003-09-30 Nedap Nv Elektronisch voorschakelapparaat voor gasontladingslampen.
US6876157B2 (en) * 2002-06-18 2005-04-05 Microsemi Corporation Lamp inverter with pre-regulator
US6969958B2 (en) * 2002-06-18 2005-11-29 Microsemi Corporation Square wave drive system
US6979959B2 (en) 2002-12-13 2005-12-27 Microsemi Corporation Apparatus and method for striking a fluorescent lamp
JP2005078910A (ja) * 2003-08-29 2005-03-24 Mitsubishi Electric Corp 高輝度放電ランプ点灯装置
US7187139B2 (en) 2003-09-09 2007-03-06 Microsemi Corporation Split phase inverters for CCFL backlight system
US7183727B2 (en) 2003-09-23 2007-02-27 Microsemi Corporation Optical and temperature feedbacks to control display brightness
US7242147B2 (en) 2003-10-06 2007-07-10 Microsemi Corporation Current sharing scheme for multiple CCF lamp operation
US7279851B2 (en) 2003-10-21 2007-10-09 Microsemi Corporation Systems and methods for fault protection in a balancing transformer
WO2005059964A2 (en) 2003-12-16 2005-06-30 Microsemi Corporation Current-mode driver
US7468722B2 (en) 2004-02-09 2008-12-23 Microsemi Corporation Method and apparatus to control display brightness with ambient light correction
US7112929B2 (en) 2004-04-01 2006-09-26 Microsemi Corporation Full-bridge and half-bridge compatible driver timing schedule for direct drive backlight system
WO2005101920A2 (en) 2004-04-07 2005-10-27 Microsemi Corporation A primary side current balancing scheme for multiple ccf lamp operation
US7755595B2 (en) 2004-06-07 2010-07-13 Microsemi Corporation Dual-slope brightness control for transflective displays
US7012380B2 (en) * 2004-06-24 2006-03-14 Dell Products L.P. Information handling system with dual mode inverter
JP2005312284A (ja) * 2005-01-12 2005-11-04 Masakazu Ushijima 電流共振型放電管用インバータ回路
US7173382B2 (en) 2005-03-31 2007-02-06 Microsemi Corporation Nested balancing topology for balancing current among multiple lamps
TWI281180B (en) * 2005-08-19 2007-05-11 Hon Hai Prec Ind Co Ltd Discharge lamp driving device
US7414371B1 (en) 2005-11-21 2008-08-19 Microsemi Corporation Voltage regulation loop with variable gain control for inverter circuit
US7443105B2 (en) * 2006-06-15 2008-10-28 American Electric Cord, Inc. Ballast circuit for gas discharge lamps
US7569998B2 (en) 2006-07-06 2009-08-04 Microsemi Corporation Striking and open lamp regulation for CCFL controller
US7843141B1 (en) 2007-11-19 2010-11-30 Universal Lighting Technologies, Inc. Low cost step dimming interface for an electronic ballast
TW200939886A (en) 2008-02-05 2009-09-16 Microsemi Corp Balancing arrangement with reduced amount of balancing transformers
US8049430B2 (en) 2008-09-05 2011-11-01 Lutron Electronics Co., Inc. Electronic ballast having a partially self-oscillating inverter circuit
US8093839B2 (en) 2008-11-20 2012-01-10 Microsemi Corporation Method and apparatus for driving CCFL at low burst duty cycle rates
JP5353528B2 (ja) * 2009-07-27 2013-11-27 ウシオ電機株式会社 放電ランプ点灯装置
JP5381457B2 (ja) * 2009-07-27 2014-01-08 ウシオ電機株式会社 放電ランプ点灯装置
JP5573130B2 (ja) * 2009-12-01 2014-08-20 ウシオ電機株式会社 放電ランプ点灯装置
US9030119B2 (en) 2010-07-19 2015-05-12 Microsemi Corporation LED string driver arrangement with non-dissipative current balancer
CN103477712B (zh) 2011-05-03 2015-04-08 美高森美公司 高效led驱动方法
US8754581B2 (en) 2011-05-03 2014-06-17 Microsemi Corporation High efficiency LED driving method for odd number of LED strings
JP5924494B2 (ja) * 2012-08-01 2016-05-25 ウシオ電機株式会社 放電ランプ点灯装置およびプロジェクタ

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1278601B (de) * 1959-07-04 1968-09-26 Philips Nv Selbsterregter Transistor-Spannungsumformer
US3319180A (en) * 1965-08-09 1967-05-09 Lorain Prod Corp Transistor inverter with separate relaxation oscillator timing circuit
US3611021A (en) * 1970-04-06 1971-10-05 North Electric Co Control circuit for providing regulated current to lamp load
US3671804A (en) * 1970-06-25 1972-06-20 American Standard Linear Syste Variable duty cycle swtiching circuit
US3754160A (en) * 1971-10-28 1973-08-21 Radiant Ind Inc Four-lamp driver circuit for fluorescent lamps
US3723848A (en) * 1972-04-17 1973-03-27 Martin Marietta Corp Electrical power inverter with sinusoidal output
US3781638A (en) * 1972-06-28 1973-12-25 Gen Electric Power supply including inverter having multiple-winding transformer and control transistor for controlling main switching transistors and providing overcurrent protection
US3953780A (en) * 1974-10-21 1976-04-27 General Electric Company Inverter having forced turn-off
US3927363A (en) * 1975-02-10 1975-12-16 Rockwell International Corp Current limited self-saturating dc/dc converter
US4005335A (en) * 1975-07-15 1977-01-25 Iota Engineering Inc. High frequency power source for fluorescent lamps and the like

Also Published As

Publication number Publication date
FR2343391B1 (nl) 1982-11-05
IT1076597B (it) 1985-04-27
DE2705968A1 (de) 1977-09-08
FI770558A (nl) 1977-09-02
FI66106C (fi) 1984-08-10
BE851956A (fr) 1977-09-01
US4060751A (en) 1977-11-29
JPS52121975A (en) 1977-10-13
GB1570927A (en) 1980-07-09
CA1095974A (en) 1981-02-17
FI66106B (fi) 1984-04-30
FR2343391A1 (fr) 1977-09-30

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Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
BV The patent application has lapsed