EP1372362A3 - Circuit with a current control and a near-capacitive mode detection for operating a discharge lamp - Google Patents

Circuit with a current control and a near-capacitive mode detection for operating a discharge lamp Download PDF

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Publication number
EP1372362A3
EP1372362A3 EP03012801A EP03012801A EP1372362A3 EP 1372362 A3 EP1372362 A3 EP 1372362A3 EP 03012801 A EP03012801 A EP 03012801A EP 03012801 A EP03012801 A EP 03012801A EP 1372362 A3 EP1372362 A3 EP 1372362A3
Authority
EP
European Patent Office
Prior art keywords
circuit
operating
discharge lamp
current control
mode detection
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Withdrawn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
EP03012801A
Other languages
German (de)
French (fr)
Other versions
EP1372362A2 (en
Inventor
Olaf Busse
Markus Heckmann
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP1372362A2 publication Critical patent/EP1372362A2/en
Publication of EP1372362A3 publication Critical patent/EP1372362A3/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Withdrawn legal-status Critical Current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
    • H05B41/282—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
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2856—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against internal abnormal circuit 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
    • 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
    • Y10S315/05—Starting and operating circuit for fluorescent lamp

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

Die Erfindung betrifft eine Betriebsschaltung für eine Entladungslampe mit einer Stromregelschaltung zum Regeln des Lampenstroms und einer Detektionsschaltung zum Erkennen der Nähe zu einem kapazitiven Betrieb des Lastkreises. Die Betriebsschaltung ist dazu ausgelegt, bei einer Erkennung der Nähe zu einem kapazitiven Betrieb den Stromsollwert zu verkleinern.

Figure imgaf001
The invention relates to an operating circuit for a discharge lamp with a current control circuit for controlling the lamp current and a detection circuit for detecting the proximity to a capacitive operation of the load circuit. The operating circuit is designed to reduce the current setpoint when detecting the proximity to a capacitive operation.
Figure imgaf001
EP03012801A 2002-06-11 2003-06-05 Circuit with a current control and a near-capacitive mode detection for operating a discharge lamp Withdrawn EP1372362A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10225880A DE10225880A1 (en) 2002-06-11 2002-06-11 Discharge lamp operating circuit with a current control circuit and a circuit for detecting proximity to a capacitive operation
DE10225880 2002-06-11

Publications (2)

Publication Number Publication Date
EP1372362A2 EP1372362A2 (en) 2003-12-17
EP1372362A3 true EP1372362A3 (en) 2006-04-05

Family

ID=29557753

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03012801A Withdrawn EP1372362A3 (en) 2002-06-11 2003-06-05 Circuit with a current control and a near-capacitive mode detection for operating a discharge lamp

Country Status (4)

Country Link
US (1) US6828737B2 (en)
EP (1) EP1372362A3 (en)
CA (1) CA2431666A1 (en)
DE (1) DE10225880A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110199094A1 (en) * 2010-02-16 2011-08-18 Hamilton Sundstrand Corporation Gas Sensor Age Compensation and Failure Detection
DE102010039430A1 (en) * 2010-08-18 2012-02-23 Osram Ag Electronic ballast and method for operating at least one discharge lamp

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4723098A (en) * 1980-10-07 1988-02-02 Thomas Industries, Inc. Electronic ballast circuit for fluorescent lamps
EP0338109A1 (en) * 1988-04-20 1989-10-25 Zumtobel Aktiengesellschaft Converter for a discharge lamp
EP0430358A1 (en) * 1989-11-29 1991-06-05 Koninklijke Philips Electronics N.V. Circuit arrangement
US5696431A (en) * 1996-05-03 1997-12-09 Philips Electronics North America Corporation Inverter driving scheme for capacitive mode protection
WO1999034650A1 (en) * 1997-12-23 1999-07-08 Tridonic Bauelemente Gmbh Electronic lamp ballast
US6331755B1 (en) * 1998-01-13 2001-12-18 International Rectifier Corporation Circuit for detecting near or below resonance operation of a fluorescent lamp driven by half-bridge circuit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4928038A (en) * 1988-09-26 1990-05-22 General Electric Company Power control circuit for discharge lamp and method of operating same
US5075602A (en) * 1989-11-29 1991-12-24 U.S. Philips Corporation Discharge lamp control circuit arrangement
US6008590A (en) * 1996-05-03 1999-12-28 Philips Electronics North America Corporation Integrated circuit inverter control having a multi-function pin
US5914572A (en) * 1997-06-19 1999-06-22 Matsushita Electric Works, Ltd. Discharge lamp driving circuit having resonant circuit defining two resonance modes
ATE213901T1 (en) * 1997-12-23 2002-03-15 Tridonic Bauelemente METHOD AND DEVICE FOR DETECTING THE RECTIFICATION EFFECT OCCURRING IN A GAS DISCHARGE LAMP
DE10225881A1 (en) * 2002-06-11 2004-01-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Discharge lamp operating circuit with circuit for detecting proximity to a capacitive operation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4723098A (en) * 1980-10-07 1988-02-02 Thomas Industries, Inc. Electronic ballast circuit for fluorescent lamps
EP0338109A1 (en) * 1988-04-20 1989-10-25 Zumtobel Aktiengesellschaft Converter for a discharge lamp
EP0430358A1 (en) * 1989-11-29 1991-06-05 Koninklijke Philips Electronics N.V. Circuit arrangement
US5696431A (en) * 1996-05-03 1997-12-09 Philips Electronics North America Corporation Inverter driving scheme for capacitive mode protection
WO1999034650A1 (en) * 1997-12-23 1999-07-08 Tridonic Bauelemente Gmbh Electronic lamp ballast
US6331755B1 (en) * 1998-01-13 2001-12-18 International Rectifier Corporation Circuit for detecting near or below resonance operation of a fluorescent lamp driven by half-bridge circuit

Also Published As

Publication number Publication date
DE10225880A1 (en) 2003-12-24
EP1372362A2 (en) 2003-12-17
US20040036426A1 (en) 2004-02-26
CA2431666A1 (en) 2003-12-11
US6828737B2 (en) 2004-12-07

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