CA2160309A1 - Operating circuit for at least one low-pressure discharge lamp, especially for one or more fluorescent lamps, and method of safe operation - Google Patents

Operating circuit for at least one low-pressure discharge lamp, especially for one or more fluorescent lamps, and method of safe operation

Info

Publication number
CA2160309A1
CA2160309A1 CA002160309A CA2160309A CA2160309A1 CA 2160309 A1 CA2160309 A1 CA 2160309A1 CA 002160309 A CA002160309 A CA 002160309A CA 2160309 A CA2160309 A CA 2160309A CA 2160309 A1 CA2160309 A1 CA 2160309A1
Authority
CA
Canada
Prior art keywords
fluorescent lamps
inverter
circuit
low
discharge lamp
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
CA002160309A
Other languages
French (fr)
Other versions
CA2160309C (en
Inventor
Ulrich Roll
Ludwig Reiser
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 CA2160309A1 publication Critical patent/CA2160309A1/en
Application granted granted Critical
Publication of CA2160309C publication Critical patent/CA2160309C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)

Abstract

To prevent operation of an inverter starting and oscillation control circuit for one or more fluorescent lamps (LP1; LP4; LP5; LP6; LP20, LP21; LP30, LP31) if electrode filaments (E10, E11; E20, E21, E22, E23; E30, E31, E32, E33;
E40, E41; E50, E51; E60, E61) of any one of the lamps should be broken, a high-resistance d-c path is provided which connects the energy supply source with the control circuit (ST1; ST2; ST3; RK4b, C43; RK5b, RK5c; C54; L6c, C67) for the inverter circuit, so that, if one of the electrodes (E10, E11;
E20, E21, E22, E23; E30, E31, E32, E33; E40, E41; E50, E51;
E60, E61) should be broken, oscillation of the inverter, typically a half-bridge transistor or MOSFET circuit, is prevented. The circuit is particularly suitable to operate compact fluorescent lamps in which the operating voltage is in excess of the input voltage supplied to the inverter, and which requires resonant voltage enhancement during operation, and after ignition.
CA002160309A 1994-10-12 1995-10-11 Operating circuit for at least one low-pressure discharge lamp, especially for one or more fluorescent lamps, and method of safe operation Expired - Fee Related CA2160309C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4436463.6 1994-10-12
DE4436463A DE4436463A1 (en) 1994-10-12 1994-10-12 Circuit arrangement for operating one or more low-pressure discharge lamps

Publications (2)

Publication Number Publication Date
CA2160309A1 true CA2160309A1 (en) 1996-04-13
CA2160309C CA2160309C (en) 2004-12-07

Family

ID=6530591

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002160309A Expired - Fee Related CA2160309C (en) 1994-10-12 1995-10-11 Operating circuit for at least one low-pressure discharge lamp, especially for one or more fluorescent lamps, and method of safe operation

Country Status (5)

Country Link
EP (1) EP0707437B1 (en)
JP (1) JPH08213178A (en)
KR (1) KR100334378B1 (en)
CA (1) CA2160309C (en)
DE (2) DE4436463A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19819671B4 (en) * 1998-05-02 2008-04-10 Insta Elektro Gmbh Circuit arrangement for the protection of fluorescent lamps and electronic ballast
DE19916080C2 (en) * 1999-04-09 2001-11-22 Vossloh Schwabe Elektronik Ballast with error detection
DE10200022A1 (en) 2002-01-02 2003-07-17 Philips Intellectual Property Circuit arrangement for operating one or more lamps
DE10206731B4 (en) * 2002-02-18 2016-12-22 Tridonic Gmbh & Co Kg Lamp sensor for a ballast for operating a gas discharge lamp
KR100625262B1 (en) 2004-04-14 2006-09-20 조당 Electronic ballast comprising a improved resonant output circuit
KR100686471B1 (en) * 2005-10-11 2007-02-26 주식회사 화승전기 Electronic ballast having the high efficiency and improved output characteristic

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869640A (en) * 1973-07-09 1975-03-04 Taras Avenir Kolomyjec Power supply arrangement for fluorescent tubes, thermionic devices and the like
DE3805510A1 (en) * 1988-02-22 1989-08-31 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh CIRCUIT ARRANGEMENT FOR OPERATING A LOW-PRESSURE DISCHARGE LAMP
US5220247A (en) * 1992-03-31 1993-06-15 Moisin Mihail S Circuit for driving a gas discharge lamp load
DE4303595A1 (en) 1993-02-08 1994-08-11 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Circuit arrangement for operating a fluorescent lamp

Also Published As

Publication number Publication date
DE59509422D1 (en) 2001-08-23
JPH08213178A (en) 1996-08-20
KR100334378B1 (en) 2002-10-31
KR960016646A (en) 1996-05-22
CA2160309C (en) 2004-12-07
EP0707437B1 (en) 2001-07-18
DE4436463A1 (en) 1996-04-18
EP0707437A3 (en) 1997-12-03
EP0707437A2 (en) 1996-04-17

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed