EP1343359A3 - EOL-detection with integrated electrode interrogation - Google Patents

EOL-detection with integrated electrode interrogation Download PDF

Info

Publication number
EP1343359A3
EP1343359A3 EP03003547A EP03003547A EP1343359A3 EP 1343359 A3 EP1343359 A3 EP 1343359A3 EP 03003547 A EP03003547 A EP 03003547A EP 03003547 A EP03003547 A EP 03003547A EP 1343359 A3 EP1343359 A3 EP 1343359A3
Authority
EP
European Patent Office
Prior art keywords
eol
detection
integrated electrode
voltage
interrogation
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
EP03003547A
Other languages
German (de)
French (fr)
Other versions
EP1343359A2 (en
EP1343359B1 (en
Inventor
Martin Grabner
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 EP1343359A2 publication Critical patent/EP1343359A2/en
Publication of EP1343359A3 publication Critical patent/EP1343359A3/en
Application granted granted Critical
Publication of EP1343359B1 publication Critical patent/EP1343359B1/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

Abstract

A discharge lamp (1) end of life monitoring circuit has microcontroller (7) measurement of the DC voltage across the electrodes (2, 3) with an offset voltage (10) connected using the voltage divider (4, 5) and a reference voltage (12) applied to the electrodes.
EP03003547A 2002-03-05 2003-02-17 EOL-detection with integrated electrode interrogation Expired - Lifetime EP1343359B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10209620A DE10209620A1 (en) 2002-03-05 2002-03-05 EOL detection with integrated helix interrogation
DE10209620 2002-03-05

Publications (3)

Publication Number Publication Date
EP1343359A2 EP1343359A2 (en) 2003-09-10
EP1343359A3 true EP1343359A3 (en) 2004-04-21
EP1343359B1 EP1343359B1 (en) 2011-06-01

Family

ID=27740640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03003547A Expired - Lifetime EP1343359B1 (en) 2002-03-05 2003-02-17 EOL-detection with integrated electrode interrogation

Country Status (6)

Country Link
US (1) US6646390B2 (en)
EP (1) EP1343359B1 (en)
CN (1) CN1443030B (en)
AT (1) ATE511742T1 (en)
CA (1) CA2420816A1 (en)
DE (1) DE10209620A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6854117B1 (en) * 2000-10-31 2005-02-08 Caspian Networks, Inc. Parallel network processor array
DE10209619A1 (en) * 2002-03-05 2003-09-25 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Operating circuit for discharge lamp with EOL early detection
DE102009004852A1 (en) 2009-01-16 2010-07-29 Osram Gesellschaft mit beschränkter Haftung Detector circuit and method for controlling a fluorescent lamp
US8482213B1 (en) 2009-06-29 2013-07-09 Panasonic Corporation Electronic ballast with pulse detection circuit for lamp end of life and output short protection
DE102010029511B4 (en) 2010-05-31 2014-10-09 Osram Gmbh Circuit arrangement for operating a discharge lamp
US8947020B1 (en) 2011-11-17 2015-02-03 Universal Lighting Technologies, Inc. End of life control for parallel lamp ballast
DE102012207002A1 (en) * 2011-12-23 2013-06-27 Tridonic Gmbh & Co. Kg Procedure, control gear and lighting system
DE102021200762A1 (en) * 2021-01-28 2022-07-28 BSH Hausgeräte GmbH Measuring device for differential voltage measurement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01166495A (en) * 1987-12-23 1989-06-30 Matsushita Electric Works Ltd Lighting device for electric discharge lamp
EP0794691A2 (en) * 1996-03-06 1997-09-10 Denso Corporation Device for accurately detecting end of usage lifetime of a discharge lamp
US5808422A (en) * 1996-05-10 1998-09-15 Philips Electronics North America Lamp ballast with lamp rectification detection circuitry
US6008592A (en) * 1998-06-10 1999-12-28 International Rectifier Corporation End of lamp life or false lamp detection circuit for an electronic ballast

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19819027A1 (en) * 1998-04-29 1999-11-04 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Circuit arrangement for operating at least one discharge lamp
DE19852350A1 (en) * 1998-11-13 2000-05-18 Hella Kg Hueck & Co Diagnostic system for the ballast of a high pressure gas discharge lamp in a motor vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01166495A (en) * 1987-12-23 1989-06-30 Matsushita Electric Works Ltd Lighting device for electric discharge lamp
EP0794691A2 (en) * 1996-03-06 1997-09-10 Denso Corporation Device for accurately detecting end of usage lifetime of a discharge lamp
US5808422A (en) * 1996-05-10 1998-09-15 Philips Electronics North America Lamp ballast with lamp rectification detection circuitry
US6008592A (en) * 1998-06-10 1999-12-28 International Rectifier Corporation End of lamp life or false lamp detection circuit for an electronic ballast

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 437 (E - 826) 29 September 1989 (1989-09-29) *

Also Published As

Publication number Publication date
DE10209620A1 (en) 2003-09-25
CN1443030A (en) 2003-09-17
US6646390B2 (en) 2003-11-11
EP1343359A2 (en) 2003-09-10
EP1343359B1 (en) 2011-06-01
CN1443030B (en) 2010-04-21
US20030168995A1 (en) 2003-09-11
ATE511742T1 (en) 2011-06-15
CA2420816A1 (en) 2003-09-05

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