EP1209954A4 - Dimming control of electronic ballasts - Google Patents

Dimming control of electronic ballasts

Info

Publication number
EP1209954A4
EP1209954A4 EP20000310431 EP00310431A EP1209954A4 EP 1209954 A4 EP1209954 A4 EP 1209954A4 EP 20000310431 EP20000310431 EP 20000310431 EP 00310431 A EP00310431 A EP 00310431A EP 1209954 A4 EP1209954 A4 EP 1209954A4
Authority
EP
European Patent Office
Prior art keywords
dimming control
electronic ballasts
ballasts
electronic
dimming
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.)
Ceased
Application number
EP20000310431
Other languages
German (de)
French (fr)
Other versions
EP1209954A1 (en
Inventor
Shu-Yuen Ron Hui
Shu-Hung Henry Chung
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.)
City University of Hong Kong CityU
Original Assignee
City University of Hong Kong CityU
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 City University of Hong Kong CityU filed Critical City University of Hong Kong CityU
Priority to EP00310431A priority Critical patent/EP1209954A1/en
Publication of EP1209954A4 publication Critical patent/EP1209954A4/en
Publication of EP1209954A1 publication Critical patent/EP1209954A1/en
Ceased 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
    • 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
EP00310431A 2000-11-24 2000-11-24 Dimming control of electronic ballasts Ceased EP1209954A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00310431A EP1209954A1 (en) 2000-11-24 2000-11-24 Dimming control of electronic ballasts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00310431A EP1209954A1 (en) 2000-11-24 2000-11-24 Dimming control of electronic ballasts

Publications (2)

Publication Number Publication Date
EP1209954A4 true EP1209954A4 (en) 2001-02-19
EP1209954A1 EP1209954A1 (en) 2002-05-29

Family

ID=8173414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00310431A Ceased EP1209954A1 (en) 2000-11-24 2000-11-24 Dimming control of electronic ballasts

Country Status (1)

Country Link
EP (1) EP1209954A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7304439B2 (en) 2001-09-06 2007-12-04 E. Energy Technology Limited Phase-controlled dimmable electronic ballasts for fluorescent lamps with very wide dimming range
FR2830405B1 (en) * 2001-09-28 2004-09-17 Sono Eclair ELECTRONIC BALLAST FOR CONTROLLING THE POWER ABSORBED BY A DISCHARGE LAMP AND METHOD IMPLEMENTED IN THIS DEVICE
EP1523866B1 (en) * 2002-07-15 2008-01-09 Koninklijke Philips Electronics N.V. Method and device for identifying the type of discharge lamp
US6969955B2 (en) 2004-01-29 2005-11-29 Axis Technologies, Inc. Method and apparatus for dimming control of electronic ballasts
GB2418786B (en) * 2004-10-01 2006-11-29 Energy Doubletree Ltd E Dimmable lighting system
US7075254B2 (en) * 2004-12-14 2006-07-11 Lutron Electronics Co., Inc. Lighting ballast having boost converter with on/off control and method of ballast operation
JP5081341B2 (en) * 2008-05-23 2012-11-28 双葉電子工業株式会社 Fluorescent display tube drive circuit
BRPI0805183A2 (en) * 2008-11-13 2010-08-17 Universidade Federal De Santa Catarina electronic ballast metal ballast reactor using integration techniques for power factor correction and acoustic resonance elimination

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1133579A (en) * 1978-05-08 1982-10-12 Carlile R. Stevens Power supply for a high density discharge or fluorescent lamp
US5289083A (en) * 1989-04-03 1994-02-22 Etta Industries, Inc. Resonant inverter circuitry for effecting fundamental or harmonic resonance mode starting of a gas discharge lamp
US5488269A (en) * 1995-02-10 1996-01-30 General Electric Company Multi-resonant boost high power factor circuit
US6184630B1 (en) * 1999-02-08 2001-02-06 Philips Electronics North America Corporation Electronic lamp ballast with voltage source power feedback to AC-side

Also Published As

Publication number Publication date
EP1209954A1 (en) 2002-05-29

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