FI19992063A - Loiteputken jäljellä olevan käyttöajan määrittäminen - Google Patents

Loiteputken jäljellä olevan käyttöajan määrittäminen

Info

Publication number
FI19992063A
FI19992063A FI992063A FI19992063A FI19992063A FI 19992063 A FI19992063 A FI 19992063A FI 992063 A FI992063 A FI 992063A FI 19992063 A FI19992063 A FI 19992063A FI 19992063 A FI19992063 A FI 19992063A
Authority
FI
Finland
Prior art keywords
remaining lifetime
scintillation tube
scintillation
tube
lifetime
Prior art date
Application number
FI992063A
Other languages
English (en)
Swedish (sv)
Other versions
FI107111B (fi
Inventor
Jari Tabell
Original Assignee
Teknoware Oy
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 Teknoware Oy filed Critical Teknoware Oy
Priority to FI992063A priority Critical patent/FI107111B/fi
Priority to US09/670,430 priority patent/US6538448B1/en
Priority to EP00660165A priority patent/EP1087645A3/en
Publication of FI19992063A publication Critical patent/FI19992063A/fi
Application granted granted Critical
Publication of FI107111B publication Critical patent/FI107111B/fi

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
    • H05B41/2988—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal 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
FI992063A 1999-09-27 1999-09-27 Loisteputken jäljellä olevan käyttöajan määrittäminen FI107111B (fi)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI992063A FI107111B (fi) 1999-09-27 1999-09-27 Loisteputken jäljellä olevan käyttöajan määrittäminen
US09/670,430 US6538448B1 (en) 1999-09-27 2000-09-26 Determining remaining operating life of fluorescent lamp
EP00660165A EP1087645A3 (en) 1999-09-27 2000-09-26 Determining remaining operating life of fluorescent lamp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI992063A FI107111B (fi) 1999-09-27 1999-09-27 Loisteputken jäljellä olevan käyttöajan määrittäminen
FI992063 1999-09-27

Publications (2)

Publication Number Publication Date
FI19992063A true FI19992063A (fi) 2001-03-28
FI107111B FI107111B (fi) 2001-05-31

Family

ID=8555354

Family Applications (1)

Application Number Title Priority Date Filing Date
FI992063A FI107111B (fi) 1999-09-27 1999-09-27 Loisteputken jäljellä olevan käyttöajan määrittäminen

Country Status (3)

Country Link
US (1) US6538448B1 (fi)
EP (1) EP1087645A3 (fi)
FI (1) FI107111B (fi)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2388722B (en) * 2002-05-14 2005-09-14 Mackwell Electronics Ltd Monitoring apparatus
US7116055B2 (en) * 2003-10-15 2006-10-03 Lutron Electronics Co., Inc. Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps
DE102005021297A1 (de) * 2005-05-09 2006-11-16 Tridonicatco Gmbh & Co. Kg Beurteilung des Zustands einer Heizwendel
KR101176086B1 (ko) * 2006-05-30 2012-08-22 페어차일드코리아반도체 주식회사 형광램프의 수명말기 검출회로
US7560867B2 (en) * 2006-10-17 2009-07-14 Access Business Group International, Llc Starter for a gas discharge light source
US7797117B1 (en) 2006-12-29 2010-09-14 Musco Corporation Method and system for early prediction of performance of HID lamps
DE202007003033U1 (de) * 2007-03-01 2007-07-12 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Vorrichtung für die Messung des Stromes einer Entladungslampe
GB0823473D0 (en) * 2008-12-23 2009-01-28 Signplay Limtied Lamp end of life prediction
US7911210B2 (en) * 2009-02-25 2011-03-22 Fairchild Korea Semiconductor Ltd Diagnosis device, diagnosis method, and lamp ballast circuit using the same

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277728A (en) * 1978-05-08 1981-07-07 Stevens Luminoptics Power supply for a high intensity discharge or fluorescent lamp
EP0348943A1 (en) * 1988-06-30 1990-01-03 Toshiba Lighting & Technology Corporation Fluorescent lamp
US5424611A (en) * 1993-12-22 1995-06-13 At&T Corp. Method for pre-heating a gas-discharge lamp
US5808597A (en) 1995-03-08 1998-09-15 Canon Kabushiki Kaisha Illumination device for liquid crystal display apparatus
US5606224A (en) * 1995-11-22 1997-02-25 Osram Sylvania Inc. Protection circuit for fluorescent lamps operating at failure mode
US5925986A (en) * 1996-05-09 1999-07-20 Pacific Scientific Company Method and apparatus for controlling power delivered to a fluorescent lamp
JP3858317B2 (ja) * 1996-11-29 2006-12-13 東芝ライテック株式会社 放電灯点灯装置及び照明装置
DE19805732A1 (de) * 1997-02-12 1998-08-20 Int Rectifier Corp Verfahren und Schaltung zur Steuerung der Betriebsleistung einer Leuchtstofflampe
WO1998047323A1 (fr) * 1997-04-17 1998-10-22 Toshiba Lighting & Technology Corporation Piece d'eclairage a lampe a decharge et dispositif de commande d'eclairage
FI104035B (fi) * 1998-02-12 1999-10-29 Teknoware Oy Menetelmä ja järjestely loisteputken jäljellä olevan käyttöiän määrittämiseksi

Also Published As

Publication number Publication date
EP1087645A3 (en) 2002-04-03
US6538448B1 (en) 2003-03-25
FI107111B (fi) 2001-05-31
EP1087645A2 (en) 2001-03-28

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Legal Events

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MM Patent lapsed