EP1081988A3 - Circuit for operating at least one discharge lamp - Google Patents

Circuit for operating at least one discharge lamp Download PDF

Info

Publication number
EP1081988A3
EP1081988A3 EP00116153A EP00116153A EP1081988A3 EP 1081988 A3 EP1081988 A3 EP 1081988A3 EP 00116153 A EP00116153 A EP 00116153A EP 00116153 A EP00116153 A EP 00116153A EP 1081988 A3 EP1081988 A3 EP 1081988A3
Authority
EP
European Patent Office
Prior art keywords
circuit
discharge lamp
operating
capacitor
converter
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.)
Granted
Application number
EP00116153A
Other languages
German (de)
French (fr)
Other versions
EP1081988B1 (en
EP1081988A2 (en
Inventor
Richard Köppl
Olaf Busse
Martin Grabner
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 EP1081988A2 publication Critical patent/EP1081988A2/en
Publication of EP1081988A3 publication Critical patent/EP1081988A3/en
Application granted granted Critical
Publication of EP1081988B1 publication Critical patent/EP1081988B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H05B41/295—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
    • 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
    • Y10S315/02—High frequency starting operation for fluorescent lamp
    • 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

The circuit has a half-bridge converter (T1,T2,A) with a drive device (A) and a load circuit (LD,CR,j1,j2), at least one half-bridge capacitor (CK) connected to the converter, load circuit connections for at least one discharge lamp (LP) and an arrangement for monitoring the voltage drop at the capacitor with two RC elements (R1,C1;R2,C2) connected by a threshold switch (DC). The first RC element is connected to the center tapping of the converter, the second to the capacitor and there is an arrangement for detecting the threshold switch state.
EP20000116153 1999-08-30 2000-08-01 Circuit for operating at least one discharge lamp Expired - Lifetime EP1081988B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19941437 1999-08-30
DE19941437A DE19941437A1 (en) 1999-08-30 1999-08-30 Circuit arrangement for operating at least one discharge lamp

Publications (3)

Publication Number Publication Date
EP1081988A2 EP1081988A2 (en) 2001-03-07
EP1081988A3 true EP1081988A3 (en) 2002-09-11
EP1081988B1 EP1081988B1 (en) 2004-10-27

Family

ID=7920277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000116153 Expired - Lifetime EP1081988B1 (en) 1999-08-30 2000-08-01 Circuit for operating at least one discharge lamp

Country Status (6)

Country Link
US (1) US6291947B1 (en)
EP (1) EP1081988B1 (en)
JP (1) JP2001102192A (en)
AT (1) ATE281057T1 (en)
CA (1) CA2317310A1 (en)
DE (2) DE19941437A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005013754U1 (en) * 2005-08-31 2005-11-17 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electronic control gear for operating discharge lamp, has measuring device to measure parameter that correlates to increased electrode temperature, and control device to react to temperature by adjustment of operating parameter of gear
WO2013024401A2 (en) * 2011-08-12 2013-02-21 Koninklijke Philips Electronics N.V. Universal voltage converter and inductive power coupling

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997043879A1 (en) * 1996-05-10 1997-11-20 Philips Electronics N.V. Power supply for feeding and igniting a gas discharge lamp
EP0886460A1 (en) * 1997-06-18 1998-12-23 Oy Helvar Electronic ballast with circuit for detecting rectification by lamp

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4406083A1 (en) * 1994-02-24 1995-08-31 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Circuit arrangement for operating at least one low-pressure discharge lamp
US5677602A (en) * 1995-05-26 1997-10-14 Paul; Jon D. High efficiency electronic ballast for high intensity discharge lamps
DE19619580A1 (en) 1996-05-15 1997-11-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Safety shutdown with asymmetrical lamp power
US5994847A (en) * 1997-01-31 1999-11-30 Motorola Inc. Electronic ballast with lamp current valley-fill power factor correction
DE69828484T2 (en) * 1997-04-17 2005-08-25 Toshiba Lighting & Technology Corp. DISCHARGE LAMP AND LIGHTING DEVICE
US5770925A (en) * 1997-05-30 1998-06-23 Motorola Inc. Electronic ballast with inverter protection and relamping circuits
US5869937A (en) * 1997-12-17 1999-02-09 Motorola Inc. High efficiency electronic ballast

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997043879A1 (en) * 1996-05-10 1997-11-20 Philips Electronics N.V. Power supply for feeding and igniting a gas discharge lamp
EP0886460A1 (en) * 1997-06-18 1998-12-23 Oy Helvar Electronic ballast with circuit for detecting rectification by lamp

Also Published As

Publication number Publication date
CA2317310A1 (en) 2001-02-28
US6291947B1 (en) 2001-09-18
ATE281057T1 (en) 2004-11-15
DE19941437A1 (en) 2001-03-01
EP1081988B1 (en) 2004-10-27
JP2001102192A (en) 2001-04-13
EP1081988A2 (en) 2001-03-07
DE50008397D1 (en) 2004-12-02

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