AU2001251230A1 - Integrated circuit for lamp heating and dimming control - Google Patents

Integrated circuit for lamp heating and dimming control

Info

Publication number
AU2001251230A1
AU2001251230A1 AU2001251230A AU5123001A AU2001251230A1 AU 2001251230 A1 AU2001251230 A1 AU 2001251230A1 AU 2001251230 A AU2001251230 A AU 2001251230A AU 5123001 A AU5123001 A AU 5123001A AU 2001251230 A1 AU2001251230 A1 AU 2001251230A1
Authority
AU
Australia
Prior art keywords
dimming
lamp
circuitry
filaments
integrated circuit
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.)
Abandoned
Application number
AU2001251230A
Inventor
John Chou
Yung-Lin Lin
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.)
O2Micro International Ltd
Original Assignee
O2Micro International Ltd
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 O2Micro International Ltd filed Critical O2Micro International Ltd
Publication of AU2001251230A1 publication Critical patent/AU2001251230A1/en
Abandoned 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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3927—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by pulse width modulation
    • 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
    • H05B41/295—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 with preheating electrodes, e.g. for fluorescent lamps
    • 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
    • H05B41/295—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 with preheating electrodes, e.g. for fluorescent lamps
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2985—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions
    • 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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • 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
    • Y10S315/04—Dimming circuit for fluorescent lamps

Abstract

An electronic ballast for lamps or tubes is provided. In one embodiment the present invention includes a ballast controller that includes filament heating circuitry and dimming circuitry. The filament heating circuitry may include preheat dimming circuits which preheat the filaments for a predetermined time period prior to striking the lamp, and steady-state heating circuitry that continually heats the filaments during steady state operation of the lamp. The steady state heating circuitry may be adapted to heat the filaments inversely proportional to the dim desired value of the lamp. The dimming circuitry may include conventional analog dimming and/or burst mode dimming to define a wide range of dimming characteristics for the lamp.
AU2001251230A 2000-05-12 2001-04-03 Integrated circuit for lamp heating and dimming control Abandoned AU2001251230A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US20362100P 2000-05-12 2000-05-12
US60203621 2000-05-12
PCT/US2001/010621 WO2001089271A1 (en) 2000-05-12 2001-04-03 Integrated circuit for lamp heating and dimming control

Publications (1)

Publication Number Publication Date
AU2001251230A1 true AU2001251230A1 (en) 2001-11-26

Family

ID=22754676

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001251230A Abandoned AU2001251230A1 (en) 2000-05-12 2001-04-03 Integrated circuit for lamp heating and dimming control

Country Status (9)

Country Link
US (1) US6531831B2 (en)
EP (1) EP1300055B1 (en)
CN (2) CN100591187C (en)
AT (1) ATE338443T1 (en)
AU (1) AU2001251230A1 (en)
DE (1) DE60122727T2 (en)
HK (1) HK1087886A1 (en)
TW (1) TW507472B (en)
WO (1) WO2001089271A1 (en)

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EP1300055A1 (en) 2003-04-09
US6531831B2 (en) 2003-03-11
CN1251558C (en) 2006-04-12
EP1300055B1 (en) 2006-08-30
ATE338443T1 (en) 2006-09-15
CN100591187C (en) 2010-02-17
EP1300055A4 (en) 2003-09-10
CN1457623A (en) 2003-11-19
DE60122727D1 (en) 2006-10-12
HK1087886A1 (en) 2006-10-20
CN1809239A (en) 2006-07-26
WO2001089271A1 (en) 2001-11-22
DE60122727T2 (en) 2007-09-13
TW507472B (en) 2002-10-21
US20020140371A1 (en) 2002-10-03

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