EP0746185A1 - Circuit de surveillance de l'état de functionnement d'un système à deux lampes - Google Patents

Circuit de surveillance de l'état de functionnement d'un système à deux lampes Download PDF

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Publication number
EP0746185A1
EP0746185A1 EP95108385A EP95108385A EP0746185A1 EP 0746185 A1 EP0746185 A1 EP 0746185A1 EP 95108385 A EP95108385 A EP 95108385A EP 95108385 A EP95108385 A EP 95108385A EP 0746185 A1 EP0746185 A1 EP 0746185A1
Authority
EP
European Patent Office
Prior art keywords
control circuit
lamp
voltage
transistor
circuit
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
EP95108385A
Other languages
German (de)
English (en)
Other versions
EP0746185B1 (fr
Inventor
Bernhard Orben
Jürgen Klier
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT95108385T priority Critical patent/ATE182737T1/de
Priority to EP95108385A priority patent/EP0746185B1/fr
Priority to DE59506476T priority patent/DE59506476D1/de
Publication of EP0746185A1 publication Critical patent/EP0746185A1/fr
Application granted granted Critical
Publication of EP0746185B1 publication Critical patent/EP0746185B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H05B41/2855—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
EP95108385A 1995-05-31 1995-05-31 Circuit de surveillance de l'état de functionnement d'un système à deux lampes Expired - Lifetime EP0746185B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT95108385T ATE182737T1 (de) 1995-05-31 1995-05-31 Schaltungsanordnung zum überwachen des lampenbetriebs mindestens zweier leuchtstofflampen
EP95108385A EP0746185B1 (fr) 1995-05-31 1995-05-31 Circuit de surveillance de l'état de functionnement d'un système à deux lampes
DE59506476T DE59506476D1 (de) 1995-05-31 1995-05-31 Schaltungsanordnung zum Überwachen des Lampenbetriebs mindestens zweier Leuchtstofflampen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95108385A EP0746185B1 (fr) 1995-05-31 1995-05-31 Circuit de surveillance de l'état de functionnement d'un système à deux lampes

Publications (2)

Publication Number Publication Date
EP0746185A1 true EP0746185A1 (fr) 1996-12-04
EP0746185B1 EP0746185B1 (fr) 1999-07-28

Family

ID=8219321

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95108385A Expired - Lifetime EP0746185B1 (fr) 1995-05-31 1995-05-31 Circuit de surveillance de l'état de functionnement d'un système à deux lampes

Country Status (3)

Country Link
EP (1) EP0746185B1 (fr)
AT (1) ATE182737T1 (fr)
DE (1) DE59506476D1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146683B1 (fr) 1981-07-31 1987-11-19 Siemens Aktiengesellschaft Onduleur
DE3938677A1 (de) * 1989-11-22 1991-05-23 Trilux Lenze Gmbh & Co Kg Leuchtstofflampen-vorschaltgeraet
EP0466245A2 (fr) * 1990-07-09 1992-01-15 Koninklijke Philips Electronics N.V. Circuit
EP0558772A1 (fr) 1992-03-02 1993-09-08 Siemens Aktiengesellschaft Circuit pour le fonctionnement de plusieurs lampes fluorescentes avec un ballast

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146683B1 (fr) 1981-07-31 1987-11-19 Siemens Aktiengesellschaft Onduleur
DE3938677A1 (de) * 1989-11-22 1991-05-23 Trilux Lenze Gmbh & Co Kg Leuchtstofflampen-vorschaltgeraet
EP0466245A2 (fr) * 1990-07-09 1992-01-15 Koninklijke Philips Electronics N.V. Circuit
EP0558772A1 (fr) 1992-03-02 1993-09-08 Siemens Aktiengesellschaft Circuit pour le fonctionnement de plusieurs lampes fluorescentes avec un ballast

Also Published As

Publication number Publication date
EP0746185B1 (fr) 1999-07-28
DE59506476D1 (de) 1999-09-02
ATE182737T1 (de) 1999-08-15

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