EP0777872A4 - Low frequency square wave electronic ballast for gas discharge devices - Google Patents

Low frequency square wave electronic ballast for gas discharge devices

Info

Publication number
EP0777872A4
EP0777872A4 EP94926556A EP94926556A EP0777872A4 EP 0777872 A4 EP0777872 A4 EP 0777872A4 EP 94926556 A EP94926556 A EP 94926556A EP 94926556 A EP94926556 A EP 94926556A EP 0777872 A4 EP0777872 A4 EP 0777872A4
Authority
EP
European Patent Office
Prior art keywords
low frequency
gas discharge
square wave
electronic ballast
discharge devices
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.)
Withdrawn
Application number
EP94926556A
Other languages
German (de)
French (fr)
Other versions
EP0777872A1 (en
Inventor
Masot Oscar Vila
Janis Melis
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.)
LED Corp NV
Original Assignee
LED Corp NV
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 LED Corp NV filed Critical LED Corp NV
Priority claimed from PCT/US1994/009467 external-priority patent/WO1996007130A1/en
Publication of EP0777872A1 publication Critical patent/EP0777872A1/en
Publication of EP0777872A4 publication Critical patent/EP0777872A4/en
Withdrawn legal-status Critical Current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
    • H05B41/288—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
    • H05B41/2887—Static converters especially adapted therefor; Control thereof characterised by a controllable bridge in the final stage
    • H05B41/2888—Static converters especially adapted therefor; Control thereof characterised by a controllable bridge in the final stage the bridge being commutated at low frequency, e.g. 1kHz
    • 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
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2921—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2923—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply conditions
    • 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
EP94926556A 1994-08-26 1994-08-26 Low frequency square wave electronic ballast for gas discharge devices Withdrawn EP0777872A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1994/009467 WO1996007130A1 (en) 1993-07-12 1994-08-26 Low frequency square wave electronic ballast for gas discharge devices

Publications (2)

Publication Number Publication Date
EP0777872A1 EP0777872A1 (en) 1997-06-11
EP0777872A4 true EP0777872A4 (en) 1997-12-17

Family

ID=34806501

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94926556A Withdrawn EP0777872A4 (en) 1994-08-26 1994-08-26 Low frequency square wave electronic ballast for gas discharge devices

Country Status (3)

Country Link
EP (1) EP0777872A4 (en)
JP (1) JPH10504928A (en)
AU (1) AU685843B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4650815B2 (en) * 1999-12-28 2011-03-16 株式会社日立メディアエレクトロニクス Discharge lamp lighting power supply device and video display device having the same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059053A2 (en) * 1981-02-21 1982-09-01 THORN EMI plc Switched mode power supply
US4437146A (en) * 1982-08-09 1984-03-13 Pacific Electro Dynamics, Inc. Boost power supply having power factor correction circuit
EP0241279A1 (en) * 1986-04-08 1987-10-14 Actronic Lighting Cc Controller for gas discharge lamps
US4974141A (en) * 1988-05-18 1990-11-27 Viteq Corporation AC to DC power converter with input current waveform control for buck-boost regualtion of output
EP0507393A2 (en) * 1991-04-04 1992-10-07 Koninklijke Philips Electronics N.V. Circuit arrangement
EP0582813A2 (en) * 1992-08-10 1994-02-16 International Business Machines Corporation Critically continuous boost converter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4683529A (en) * 1986-11-12 1987-07-28 Zytec Corporation Switching power supply with automatic power factor correction
US4904907A (en) * 1988-02-26 1990-02-27 General Electric Company Ballast circuit for metal halide lamp
US5097183A (en) * 1991-06-25 1992-03-17 Led Corporation N.V. Master-slave half-bridge DC-to-AC switchmode power converter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059053A2 (en) * 1981-02-21 1982-09-01 THORN EMI plc Switched mode power supply
US4437146A (en) * 1982-08-09 1984-03-13 Pacific Electro Dynamics, Inc. Boost power supply having power factor correction circuit
EP0241279A1 (en) * 1986-04-08 1987-10-14 Actronic Lighting Cc Controller for gas discharge lamps
US4974141A (en) * 1988-05-18 1990-11-27 Viteq Corporation AC to DC power converter with input current waveform control for buck-boost regualtion of output
EP0507393A2 (en) * 1991-04-04 1992-10-07 Koninklijke Philips Electronics N.V. Circuit arrangement
EP0582813A2 (en) * 1992-08-10 1994-02-16 International Business Machines Corporation Critically continuous boost converter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9607130A1 *

Also Published As

Publication number Publication date
AU7635994A (en) 1996-03-22
AU685843B2 (en) 1998-01-29
EP0777872A1 (en) 1997-06-11
JPH10504928A (en) 1998-05-12

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19990511