ZA977311B - Electronic ballast for gas discharge lamps. - Google Patents

Electronic ballast for gas discharge lamps.

Info

Publication number
ZA977311B
ZA977311B ZA9707311A ZA977311A ZA977311B ZA 977311 B ZA977311 B ZA 977311B ZA 9707311 A ZA9707311 A ZA 9707311A ZA 977311 A ZA977311 A ZA 977311A ZA 977311 B ZA977311 B ZA 977311B
Authority
ZA
South Africa
Prior art keywords
capacitor
gas discharge
resonance
electronic ballast
discharge lamps
Prior art date
Application number
ZA9707311A
Inventor
Norbert Primisser
Felix Tobler
Original Assignee
Tridonic Bauelemente
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 Tridonic Bauelemente filed Critical Tridonic Bauelemente
Publication of ZA977311B publication Critical patent/ZA977311B/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

Abstract

An electronic ballast for gas discharge lamps has a rectifier (1) that can be connected to a voltage supply source, a condenser circuit which is connected to the rectifier and consists of a first capacitor (2) and a second capacitor (3), a series circuit which is connected to the capacitor connections and consists of a first controllable switch (4) and a second controllable switch (5) which can be alternately switched, and a load circuit which is connected to the connection point between the first and second switches and consists of a series resonance circuit composed of a resonance inductance (6) and of a resonance capacitor (7), as well as of a gas discharge lamp (8) connected thereto. In addition, a transformer is provided whose first winding (9) is connected to the connection point between the first and second capacitor (2, 3) and whose second winding (10) is connected to the resonance capacitor (7).
ZA9707311A 1996-08-28 1997-08-14 Electronic ballast for gas discharge lamps. ZA977311B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19634850A DE19634850A1 (en) 1996-08-28 1996-08-28 Electronic ballast for gas discharge lamps

Publications (1)

Publication Number Publication Date
ZA977311B true ZA977311B (en) 1998-03-02

Family

ID=7803969

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA9707311A ZA977311B (en) 1996-08-28 1997-08-14 Electronic ballast for gas discharge lamps.

Country Status (6)

Country Link
EP (1) EP0922376B1 (en)
AT (1) ATE214863T1 (en)
AU (1) AU4453097A (en)
DE (2) DE19634850A1 (en)
WO (1) WO1998009483A1 (en)
ZA (1) ZA977311B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020153319A1 (en) 1997-08-12 2002-10-24 Debasish Mukhopadhyay Method and apparatus for high efficiency reverse osmosis operation
US6111369A (en) * 1998-12-18 2000-08-29 Clalight Israel Ltd. Electronic ballast
DE19916080C2 (en) * 1999-04-09 2001-11-22 Vossloh Schwabe Elektronik Ballast with error detection
DE102005060345A1 (en) * 2005-12-16 2007-06-21 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit arrangement and method for operating at least a first and a second lamp

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5051662A (en) * 1990-03-27 1991-09-24 Usi Lighting, Inc. Fluorescent lamp system
EP0602719B1 (en) * 1992-12-16 1998-10-21 Koninklijke Philips Electronics N.V. High frequency inverter for a discharge lamp with preheatable electrodes
GB2279187A (en) * 1993-06-19 1994-12-21 Thorn Lighting Ltd Fluorescent lamp starting and operating circuit
BE1009717A3 (en) * 1995-10-20 1997-07-01 Philips Electronics Nv Shifting.

Also Published As

Publication number Publication date
EP0922376B1 (en) 2002-03-20
EP0922376A1 (en) 1999-06-16
ATE214863T1 (en) 2002-04-15
DE19634850A1 (en) 1998-03-05
AU4453097A (en) 1998-03-19
DE59706691D1 (en) 2002-04-25
WO1998009483A1 (en) 1998-03-05

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