EP0642296A3 - Verfahren zur Erkennung einer defekten Leuchtstoffröhre bei höherfrequenter Ansteuerung. - Google Patents

Verfahren zur Erkennung einer defekten Leuchtstoffröhre bei höherfrequenter Ansteuerung. Download PDF

Info

Publication number
EP0642296A3
EP0642296A3 EP94250220A EP94250220A EP0642296A3 EP 0642296 A3 EP0642296 A3 EP 0642296A3 EP 94250220 A EP94250220 A EP 94250220A EP 94250220 A EP94250220 A EP 94250220A EP 0642296 A3 EP0642296 A3 EP 0642296A3
Authority
EP
European Patent Office
Prior art keywords
detecting
frequency
fluorescent lamp
lamp operated
faulty
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.)
Withdrawn
Application number
EP94250220A
Other languages
English (en)
French (fr)
Other versions
EP0642296A2 (de
Inventor
Dr Juergen Dietrich
Detlef Dahms
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.)
SMI SYSTEM MICROELECTRONIC INN
SMI SYST MICROELECT INNOVAT
Original Assignee
SMI SYSTEM MICROELECTRONIC INN
SMI SYST MICROELECT INNOVAT
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
Priority claimed from DE4330942A external-priority patent/DE4330942C2/de
Application filed by SMI SYSTEM MICROELECTRONIC INN, SMI SYST MICROELECT INNOVAT filed Critical SMI SYSTEM MICROELECTRONIC INN
Publication of EP0642296A2 publication Critical patent/EP0642296A2/de
Publication of EP0642296A3 publication Critical patent/EP0642296A3/de
Withdrawn legal-status Critical Current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
    • H05B41/282—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
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/25—Circuit arrangements for protecting against overcurrent
EP94250220A 1993-09-08 1994-09-07 Verfahren zur Erkennung einer defekten Leuchtstoffröhre bei höherfrequenter Ansteuerung. Withdrawn EP0642296A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4330942A DE4330942C2 (de) 1993-09-08 1993-09-08 Verfahren zum Erkennen einer defekten Leuchtstofflampe bei Betrieb mit höherfrequenter Spannung
DE4330942 1993-09-08

Publications (2)

Publication Number Publication Date
EP0642296A2 EP0642296A2 (de) 1995-03-08
EP0642296A3 true EP0642296A3 (de) 1995-07-26

Family

ID=6497530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94250220A Withdrawn EP0642296A3 (de) 1993-09-08 1994-09-07 Verfahren zur Erkennung einer defekten Leuchtstoffröhre bei höherfrequenter Ansteuerung.

Country Status (1)

Country Link
EP (1) EP0642296A3 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3521602B2 (ja) * 1996-03-06 2004-04-19 株式会社デンソー 放電灯点灯装置
JP3603643B2 (ja) * 1999-02-15 2004-12-22 松下電工株式会社 放電灯点灯装置
DE19983865B4 (de) * 1999-11-02 2007-01-04 Mitsubishi Denki K.K. Elektrisches Vorschaltgerät für eine Entladungslampe
EP2765329A1 (de) 2013-02-11 2014-08-13 Siemens Aktiengesellschaft Vorrichtung zum mechanischen Einstellen eines Schwingungsverhaltens eines Maschinenelements

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001276A1 (en) * 1980-10-07 1982-04-15 Grubbs C Solid state ballast with high frequency inverter fault protection
WO1987007995A1 (en) * 1986-06-18 1987-12-30 Innovative Controls, Inc. A high intensity discharge lamp self-adjusting ballast system with current limiters and a current feed-back loop
US5023516A (en) * 1988-05-10 1991-06-11 Matsushita Electric Industrial Co., Ltd. Discharge lamp operation apparatus
EP0576991A2 (de) * 1992-06-30 1994-01-05 Sanyo Electric Co., Ltd. Überwachungsgerät für eine Leuchtstoffröhre
GB2269279A (en) * 1992-08-01 1994-02-02 Coolite Ltd Fluorescent Tube Starting and Operating Circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001276A1 (en) * 1980-10-07 1982-04-15 Grubbs C Solid state ballast with high frequency inverter fault protection
WO1987007995A1 (en) * 1986-06-18 1987-12-30 Innovative Controls, Inc. A high intensity discharge lamp self-adjusting ballast system with current limiters and a current feed-back loop
US5023516A (en) * 1988-05-10 1991-06-11 Matsushita Electric Industrial Co., Ltd. Discharge lamp operation apparatus
EP0576991A2 (de) * 1992-06-30 1994-01-05 Sanyo Electric Co., Ltd. Überwachungsgerät für eine Leuchtstoffröhre
GB2269279A (en) * 1992-08-01 1994-02-02 Coolite Ltd Fluorescent Tube Starting and Operating Circuit

Also Published As

Publication number Publication date
EP0642296A2 (de) 1995-03-08

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