NO176640C - Drive circuit for a direct-heated discharge lamp - Google Patents

Drive circuit for a direct-heated discharge lamp

Info

Publication number
NO176640C
NO176640C NO901496A NO901496A NO176640C NO 176640 C NO176640 C NO 176640C NO 901496 A NO901496 A NO 901496A NO 901496 A NO901496 A NO 901496A NO 176640 C NO176640 C NO 176640C
Authority
NO
Norway
Prior art keywords
discharge lamp
direct
drive circuit
heated discharge
lamp
Prior art date
Application number
NO901496A
Other languages
Norwegian (no)
Other versions
NO901496L (en
NO901496D0 (en
NO176640B (en
Inventor
Thomas Marinelli
Siegfried Luger
Original Assignee
Zumtobel 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 Zumtobel Ag filed Critical Zumtobel Ag
Publication of NO901496D0 publication Critical patent/NO901496D0/en
Publication of NO901496L publication Critical patent/NO901496L/en
Publication of NO176640B publication Critical patent/NO176640B/en
Publication of NO176640C publication Critical patent/NO176640C/en

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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

In a ballast for a directly heated discharge lamp (6) a controllable switch (14) is connected in series with the capacitor (5) which is located in parallel with the electrodes (7, 8) of the lamp and is part of the series resonant circuit (3, 4). After the lamp has ignited, this switch is opened by a changeover signal generated by a transformer (9). The transformer (9) has two primary windings (10, 11), of equal size but of opposite sense, and one secondary winding. <IMAGE>
NO901496A 1989-04-03 1990-04-02 Drive circuit for a direct-heated discharge lamp NO176640C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3910738A DE3910738A1 (en) 1989-04-03 1989-04-03 CONTROL UNIT FOR A DIRECTLY HEATED DISCHARGE LAMP

Publications (4)

Publication Number Publication Date
NO901496D0 NO901496D0 (en) 1990-04-02
NO901496L NO901496L (en) 1990-10-04
NO176640B NO176640B (en) 1995-01-23
NO176640C true NO176640C (en) 1995-05-03

Family

ID=6377733

Family Applications (1)

Application Number Title Priority Date Filing Date
NO901496A NO176640C (en) 1989-04-03 1990-04-02 Drive circuit for a direct-heated discharge lamp

Country Status (5)

Country Link
EP (1) EP0391360B1 (en)
AT (1) ATE98837T1 (en)
DE (2) DE3910738A1 (en)
FI (1) FI96160C (en)
NO (1) NO176640C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4039161C2 (en) * 1990-12-07 2001-05-31 Zumtobel Ag Dornbirn System for controlling the brightness and operating behavior of fluorescent lamps
US5220248A (en) * 1992-04-28 1993-06-15 Wang Chin Tsan Fluorescent-lamp protection device in an electronic instant starter assembly
NL9301694A (en) * 1993-10-01 1995-05-01 Cm Personnel Participation Bv Electronic ballast for gas discharge tubes.
EP0779016B1 (en) * 1995-06-29 2001-10-31 Koninklijke Philips Electronics N.V. Circuit arrangement
FI107009B (en) 1999-03-31 2001-05-15 Teknoware Oy Fluorescent ballast
DE20114623U1 (en) * 2001-09-04 2004-02-12 Wilken, Wilhelm, Dr. Distal adapter for T5 fluorescent lamps with retrofit ECG
DE102005018764A1 (en) * 2005-04-22 2006-10-26 Tridonicatco Gmbh & Co. Kg Illuminant e.g. electric discharge lamp, output controlling method, involves controlling lamp output based on results of threshold discrimination on output parameter or further parameter as actual value
DE102005022592A1 (en) * 2005-05-17 2006-11-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit arrangement for operating a discharge lamp with switchable resonance capacitor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK495979A (en) * 1978-12-06 1980-06-07 Moriyama Sangyo Kk LIGHTING LIGHTING AND SUPPLY CIRCUITS
AT389614B (en) * 1981-03-12 1990-01-10 Zumtobel Ag CONTROL UNIT FOR AT LEAST ONE CONSUMER IGNITIONED AND SUPPLIED BY A GENERATOR
AT383000B (en) * 1983-06-23 1987-05-11 Zumtobel Ag CIRCUIT TO OPERATE AT LEAST ONE GAS DISCHARGE LAMP WITH HIGH FREQUENCY VOLTAGE
US4603281A (en) * 1983-12-12 1986-07-29 Nilssen Ole K Electronic fluorescent lamp starter

Also Published As

Publication number Publication date
FI96160B (en) 1996-01-31
NO901496L (en) 1990-10-04
FI96160C (en) 1996-05-10
ATE98837T1 (en) 1994-01-15
EP0391360A1 (en) 1990-10-10
NO901496D0 (en) 1990-04-02
FI901687A0 (en) 1990-04-03
DE3910738A1 (en) 1990-10-04
NO176640B (en) 1995-01-23
EP0391360B1 (en) 1993-12-15
DE59003830D1 (en) 1994-01-27

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Legal Events

Date Code Title Description
MM1K Lapsed by not paying the annual fees

Free format text: LAPSED IN OCTOBER 2002