DE69702829D1 - Electronic ballast of a gas discharge lamp with measurement of the lamp power by a direct current signal - Google Patents

Electronic ballast of a gas discharge lamp with measurement of the lamp power by a direct current signal

Info

Publication number
DE69702829D1
DE69702829D1 DE69702829T DE69702829T DE69702829D1 DE 69702829 D1 DE69702829 D1 DE 69702829D1 DE 69702829 T DE69702829 T DE 69702829T DE 69702829 T DE69702829 T DE 69702829T DE 69702829 D1 DE69702829 D1 DE 69702829D1
Authority
DE
Germany
Prior art keywords
measurement
direct current
current signal
gas discharge
electronic ballast
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.)
Revoked
Application number
DE69702829T
Other languages
German (de)
Other versions
DE69702829T2 (en
Inventor
Erkki Ahonen
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.)
Helvar Oy AB
Original Assignee
Helvar Oy AB
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8547419&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69702829(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Helvar Oy AB filed Critical Helvar Oy AB
Publication of DE69702829D1 publication Critical patent/DE69702829D1/en
Application granted granted Critical
Publication of DE69702829T2 publication Critical patent/DE69702829T2/en
Anticipated expiration legal-status Critical
Revoked 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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3925—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by frequency variation
DE1997602829 1997-01-03 1997-12-19 Electronic ballast of a gas discharge lamp with measurement of the lamp power by a direct current signal Revoked DE69702829T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI970018A FI101188B (en) 1997-01-03 1997-01-03 Electronic connector for discharge lamp equipped with lamp power measurement by means of DC signal

Publications (2)

Publication Number Publication Date
DE69702829D1 true DE69702829D1 (en) 2000-09-21
DE69702829T2 DE69702829T2 (en) 2000-12-07

Family

ID=8547419

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1997602829 Revoked DE69702829T2 (en) 1997-01-03 1997-12-19 Electronic ballast of a gas discharge lamp with measurement of the lamp power by a direct current signal

Country Status (3)

Country Link
EP (1) EP0852453B1 (en)
DE (1) DE69702829T2 (en)
FI (1) FI101188B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI107580B (en) 1999-03-30 2001-08-31 Innoware Oy Fluorescent light supply connection
US7679293B2 (en) 2007-12-20 2010-03-16 General Electric Company Anti-striation circuit for current-fed ballast
US7982452B2 (en) 2009-07-30 2011-07-19 Infineon Technologies Austria Ag Detection of a load state of a half-bridge
WO2011055158A1 (en) * 2009-11-03 2011-05-12 City University Of Hong Kong A passive lc ballast and method of manufacturing a passive lc ballast
US8638048B2 (en) 2011-04-12 2014-01-28 Infineon Technologies Ag Circuit for determining an average value
DE102011082239B3 (en) * 2011-09-07 2013-01-17 Osram Ag Electronic ballast and method of operating a discharge lamp
DE102011082245B3 (en) * 2011-09-07 2013-01-17 Osram Ag Electronic ballast and method of operating a discharge lamp

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE58907133D1 (en) * 1989-10-09 1994-04-07 Siemens Ag Electronic ballast.
DE4039498B4 (en) * 1990-07-13 2006-06-29 Lutron Electronics Co., Inc. Circuit and method for dimming gas discharge lamps
ATE147926T1 (en) * 1992-09-24 1997-02-15 Knobel Lichttech CIRCUIT ARRANGEMENT FOR OPERATING A FLUORESCENT LAMP AND FOR MEASURING THE LAMP CURRENT
DE69616483T2 (en) * 1995-06-29 2002-06-13 Koninklijke Philips Electronics N.V., Eindhoven CIRCUIT

Also Published As

Publication number Publication date
EP0852453B1 (en) 2000-08-16
FI970018A0 (en) 1997-01-03
EP0852453A1 (en) 1998-07-08
DE69702829T2 (en) 2000-12-07
FI101188B1 (en) 1998-04-30
FI101188B (en) 1998-04-30

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8331 Complete revocation