EP1189487A3 - Electronic circuit for detecting filament wear of gas discharge lamps - Google Patents

Electronic circuit for detecting filament wear of gas discharge lamps Download PDF

Info

Publication number
EP1189487A3
EP1189487A3 EP01118281A EP01118281A EP1189487A3 EP 1189487 A3 EP1189487 A3 EP 1189487A3 EP 01118281 A EP01118281 A EP 01118281A EP 01118281 A EP01118281 A EP 01118281A EP 1189487 A3 EP1189487 A3 EP 1189487A3
Authority
EP
European Patent Office
Prior art keywords
electronic circuit
gas discharge
discharge lamps
helix
filament wear
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
EP01118281A
Other languages
German (de)
French (fr)
Other versions
EP1189487B1 (en
EP1189487A2 (en
Inventor
Klaus Schadhauser
Harald Schmitt
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 EP1189487A2 publication Critical patent/EP1189487A2/en
Publication of EP1189487A3 publication Critical patent/EP1189487A3/en
Application granted granted Critical
Publication of EP1189487B1 publication Critical patent/EP1189487B1/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
    • Y10S315/07—Starting and control circuits for gas discharge lamp using transistors

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

A DC portion of a coupling capacitor (C5) is analyzed by means of a helix. If the helix fractures, then a cut-off is triggered. An AC portion of a generator output (O) can be monitored by means of a second helix and consequently, if the second helix fractures, then a cut-off can also be triggered. Between two DC connectors (DC+,DC-) there is a series circuit of two semi-conductor switches (T6,T7) run as MOSFET switches.
EP01118281A 2000-09-18 2001-07-30 Electronic circuit for detecting filament wear of gas discharge lamps Expired - Lifetime EP1189487B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10046443 2000-09-18
DE10046443A DE10046443A1 (en) 2000-09-18 2000-09-18 Electronic circuit for the detection of the change in gas discharge lamps

Publications (3)

Publication Number Publication Date
EP1189487A2 EP1189487A2 (en) 2002-03-20
EP1189487A3 true EP1189487A3 (en) 2005-01-05
EP1189487B1 EP1189487B1 (en) 2007-11-07

Family

ID=7656863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01118281A Expired - Lifetime EP1189487B1 (en) 2000-09-18 2001-07-30 Electronic circuit for detecting filament wear of gas discharge lamps

Country Status (9)

Country Link
US (1) US6566822B2 (en)
EP (1) EP1189487B1 (en)
KR (1) KR20020021997A (en)
CN (1) CN1345175A (en)
AT (1) ATE377926T1 (en)
AU (1) AU775944B2 (en)
CA (1) CA2357379A1 (en)
DE (2) DE10046443A1 (en)
TW (1) TW522758B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10160790A1 (en) * 2001-01-12 2002-08-08 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Circuit for switching on sub-circuitry, e.g. for lamp starter circuit, has additional diode connected in series and in same orientation as two diodes
US7116063B2 (en) * 2003-07-28 2006-10-03 Matsushita Electric Works, Ltd. Dimmable discharge lamp lighting device
CN1874645B (en) * 2005-05-31 2010-09-29 电灯专利信托有限公司 Device for safely connecting lamp to equipment site

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0111929A1 (en) * 1982-12-23 1984-06-27 Siemens Aktiengesellschaft Arrangement for switching off an inverter
DE4120649A1 (en) * 1991-06-22 1992-12-24 Vossloh Schwabe Gmbh OVERVOLTAGE PROTECTED BALLAST
EP0808084A2 (en) * 1996-05-15 1997-11-19 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Safety shutdown in case of asymmetrical power consumption

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3608615A1 (en) * 1986-03-14 1987-09-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh CIRCUIT ARRANGEMENT FOR OPERATING LOW-PRESSURE DISCHARGE LAMPS
DE3805510A1 (en) 1988-02-22 1989-08-31 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh CIRCUIT ARRANGEMENT FOR OPERATING A LOW-PRESSURE DISCHARGE LAMP
US5027034A (en) 1989-10-12 1991-06-25 Honeywell Inc. Alternating cathode florescent lamp dimmer
DE4238409A1 (en) * 1992-11-13 1994-05-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Circuit arrangement for operating low-pressure discharge lamps
US5493181A (en) 1994-03-22 1996-02-20 Energy Savings, Inc. Capacitive lamp out detector
US5612597A (en) * 1994-12-29 1997-03-18 International Rectifier Corporation Oscillating driver circuit with power factor correction, electronic lamp ballast employing same and driver method
DE19505459A1 (en) 1995-02-17 1996-08-22 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Circuit arrangement for operating a discharge lamp
US5493180A (en) * 1995-03-31 1996-02-20 Energy Savings, Inc., A Delaware Corporation Lamp protective, electronic ballast
US5952790A (en) * 1996-09-06 1999-09-14 General Electric Company Lamp ballast circuit with simplified starting circuit
DE19715342C1 (en) * 1997-04-12 1998-12-17 Vossloh Schwabe Gmbh Ballast for independent parallel operation of low pressure gas discharge lamps
DE19728847C1 (en) * 1997-07-05 1998-08-20 Vossloh Schwabe Gmbh Voltage regulated electronic starter unit for gas discharge lamp especially fluorescent lamp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0111929A1 (en) * 1982-12-23 1984-06-27 Siemens Aktiengesellschaft Arrangement for switching off an inverter
DE4120649A1 (en) * 1991-06-22 1992-12-24 Vossloh Schwabe Gmbh OVERVOLTAGE PROTECTED BALLAST
EP0808084A2 (en) * 1996-05-15 1997-11-19 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Safety shutdown in case of asymmetrical power consumption

Also Published As

Publication number Publication date
EP1189487B1 (en) 2007-11-07
TW522758B (en) 2003-03-01
CA2357379A1 (en) 2002-03-18
AU775944B2 (en) 2004-08-19
US6566822B2 (en) 2003-05-20
DE50113223D1 (en) 2007-12-20
AU7216701A (en) 2002-03-21
DE10046443A1 (en) 2002-03-28
ATE377926T1 (en) 2007-11-15
CN1345175A (en) 2002-04-17
US20020047604A1 (en) 2002-04-25
EP1189487A2 (en) 2002-03-20
KR20020021997A (en) 2002-03-23

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