EP0697803A3 - Circuit for operating discharge lamps - Google Patents

Circuit for operating discharge lamps Download PDF

Info

Publication number
EP0697803A3
EP0697803A3 EP95112985A EP95112985A EP0697803A3 EP 0697803 A3 EP0697803 A3 EP 0697803A3 EP 95112985 A EP95112985 A EP 95112985A EP 95112985 A EP95112985 A EP 95112985A EP 0697803 A3 EP0697803 A3 EP 0697803A3
Authority
EP
European Patent Office
Prior art keywords
circuit
discharge lamps
inductance
oscillator
operating discharge
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.)
Granted
Application number
EP95112985A
Other languages
German (de)
French (fr)
Other versions
EP0697803B1 (en
EP0697803A2 (en
Inventor
Daniel Muessli
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.)
Pinbeam AG
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0697803A2 publication Critical patent/EP0697803A2/en
Publication of EP0697803A3 publication Critical patent/EP0697803A3/en
Application granted granted Critical
Publication of EP0697803B1 publication Critical patent/EP0697803B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

The circuit has a bias stage connected between the positive and negative terminals of a rectifier bridge (D1,D2,D3,D4) coupled to the AC network, the bias stage including a filter circuit (C1,C2,C3,DR1,DR2) and a HF oscillator (R2-R6,T1,T2,D5,D6,C6,I1,I2). The inductive windings (I1,I2) of the HF oscillator are wound on a common core with a third inductance (I3,I4) to form a current transformer. A series current limiting circuit with an inductance (DR3,I4) and a capacitor (C8) is inserted in the current circuit between one terminal of the discharge lamp (FL) and the rectifier bridge.
EP95112985A 1994-08-18 1995-08-17 Circuit for operating discharge lamps Expired - Lifetime EP0697803B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH2546/94 1994-08-18
CH254694 1994-08-18
CH254694 1994-08-18

Publications (3)

Publication Number Publication Date
EP0697803A2 EP0697803A2 (en) 1996-02-21
EP0697803A3 true EP0697803A3 (en) 1996-05-01
EP0697803B1 EP0697803B1 (en) 2000-03-01

Family

ID=4236232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95112985A Expired - Lifetime EP0697803B1 (en) 1994-08-18 1995-08-17 Circuit for operating discharge lamps

Country Status (7)

Country Link
EP (1) EP0697803B1 (en)
JP (1) JPH0896979A (en)
KR (1) KR100396386B1 (en)
CN (1) CN1118980A (en)
AT (1) ATE190185T1 (en)
DE (1) DE59507872D1 (en)
ES (1) ES2146685T3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0824300B1 (en) * 1996-08-13 2002-12-11 MAGNETEK S.p.A. Inverter for the power supply of discharge lamps with means for improving the power factor
EP0889675A1 (en) * 1997-07-02 1999-01-07 MAGNETEK S.p.A. Electronic ballast with lamp tyre recognition
US5939837A (en) * 1997-07-15 1999-08-17 Magnetek, Inc. Electronic ballast circuit for independently increasing the power factor and decreasing the crest factor
KR19990040189U (en) * 1998-04-28 1999-11-25 안치명 Fade-out switch circuit of AC incandescent lamp
JP2001143886A (en) * 1999-11-12 2001-05-25 Asahi National Lighting Co Ltd Discharge lamp lighting device
US6169374B1 (en) * 1999-12-06 2001-01-02 Philips Electronics North America Corporation Electronic ballasts with current and voltage feedback paths
US6337800B1 (en) 2000-02-29 2002-01-08 Philips Electronics North American Corporation Electronic ballast with inductive power feedback
US7923941B2 (en) 2008-10-16 2011-04-12 General Electric Company Low cost compact size single stage high power factor circuit for discharge lamps

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4005850A1 (en) * 1990-02-23 1991-08-29 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Gas discharge lamp operating circuit - uses cold conductor for switching between pre-heating and lamp ignition
EP0488478A2 (en) * 1990-11-27 1992-06-03 Matsushita Electric Works, Ltd. Inverter device
EP0599405A1 (en) * 1992-11-26 1994-06-01 Koninklijke Philips Electronics N.V. Low harmonic power supply for a discharge lamp
EP0606664A1 (en) * 1993-01-12 1994-07-20 Koninklijke Philips Electronics N.V. Ballast circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3222534A1 (en) 1982-06-16 1983-12-22 Werner Schoenfeld Ballast
DE3611611A1 (en) 1986-04-07 1987-10-08 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh CIRCUIT ARRANGEMENT FOR HIGH-FREQUENCY OPERATION OF A LOW-PRESSURE DISCHARGE LAMP

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4005850A1 (en) * 1990-02-23 1991-08-29 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Gas discharge lamp operating circuit - uses cold conductor for switching between pre-heating and lamp ignition
EP0488478A2 (en) * 1990-11-27 1992-06-03 Matsushita Electric Works, Ltd. Inverter device
EP0599405A1 (en) * 1992-11-26 1994-06-01 Koninklijke Philips Electronics N.V. Low harmonic power supply for a discharge lamp
EP0606664A1 (en) * 1993-01-12 1994-07-20 Koninklijke Philips Electronics N.V. Ballast circuit

Also Published As

Publication number Publication date
ATE190185T1 (en) 2000-03-15
KR960009805A (en) 1996-03-22
EP0697803B1 (en) 2000-03-01
EP0697803A2 (en) 1996-02-21
ES2146685T3 (en) 2000-08-16
CN1118980A (en) 1996-03-20
JPH0896979A (en) 1996-04-12
DE59507872D1 (en) 2000-04-06
KR100396386B1 (en) 2003-12-06

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