EP0808551A1 - Systeme de ballast - Google Patents

Systeme de ballast

Info

Publication number
EP0808551A1
EP0808551A1 EP96935277A EP96935277A EP0808551A1 EP 0808551 A1 EP0808551 A1 EP 0808551A1 EP 96935277 A EP96935277 A EP 96935277A EP 96935277 A EP96935277 A EP 96935277A EP 0808551 A1 EP0808551 A1 EP 0808551A1
Authority
EP
European Patent Office
Prior art keywords
frequency
switches
lamp
ballast system
control signal
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.)
Withdrawn
Application number
EP96935277A
Other languages
German (de)
English (en)
Inventor
Wen-Jian Gu
Rui Liu
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
Philips Electronics NV
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 Koninklijke Philips Electronics NV, Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of EP0808551A1 publication Critical patent/EP0808551A1/fr
Withdrawn legal-status Critical Current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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

L'invention porte sur un système de ballast pour lampe, comportant un redresseur de courant c.a. d'entrée à une première fréquence (par exemple 50 ou 60 Hz) produisant un courant c.c. pulsé, un convertisseur c.c./c.c. convertissant le courant c.c. pulsé en courant c.c. quasiment constant (à faible pourcentage d'ondulation), puis un convertisseur c.c./c.a. à haute fréquence lié à un transformateur transformant la tension c.c. en courant c.a. de sortie excitant la lampe, le courant c.a. de sortie présentant une deuxième fréquence plus élevée que la première. Le système de ballast comporte en outre un premier circuit de commande qui commande le convertisseur c.c./c.c. à une première fréquence de commutation, et un deuxième circuit de commande qui commande le convertisseur c.c./c.a. à haute fréquence à une deuxième fréquence de commutation (par exemple > 1 MHz) de préférence au moins 10 fois plus élevée que la deuxième fréquence (à laquelle la lampe est alimentée).
EP96935277A 1995-12-08 1996-11-18 Systeme de ballast Withdrawn EP0808551A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US56989895A 1995-12-08 1995-12-08
PCT/IB1996/001244 WO1997022231A1 (fr) 1995-12-08 1996-11-18 Systeme de ballast
US569898 2000-05-12

Publications (1)

Publication Number Publication Date
EP0808551A1 true EP0808551A1 (fr) 1997-11-26

Family

ID=24277357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96935277A Withdrawn EP0808551A1 (fr) 1995-12-08 1996-11-18 Systeme de ballast

Country Status (5)

Country Link
EP (1) EP0808551A1 (fr)
JP (1) JPH11500860A (fr)
CN (1) CN1173963A (fr)
TW (1) TW322677B (fr)
WO (1) WO1997022231A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1314190C (zh) * 2001-11-29 2007-05-02 Lg电子株式会社 等离子显示板的持续脉冲发生器

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7057375B2 (en) 2002-03-21 2006-06-06 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh Power factor correction
CN102164448A (zh) * 2011-04-20 2011-08-24 梁永胜 Uv灯电源电路
EP2608365A1 (fr) 2011-12-22 2013-06-26 Joy Ride Technology Co., Ltd. Moteur électrique doté de caloducs
TW201415952A (zh) * 2012-10-15 2014-04-16 qi-zhang Chen 感應式螢光燈安定器之共用模組結構

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0439861A1 (fr) * 1990-01-29 1991-08-07 Koninklijke Philips Electronics N.V. Dispositif de commutation
JPH04138066A (ja) * 1990-09-26 1992-05-12 Toshiba Lighting & Technol Corp 放電灯点灯装置
US5371440A (en) * 1993-12-28 1994-12-06 Philips Electronics North America Corp. High frequency miniature electronic ballast with low RFI

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9722231A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1314190C (zh) * 2001-11-29 2007-05-02 Lg电子株式会社 等离子显示板的持续脉冲发生器

Also Published As

Publication number Publication date
CN1173963A (zh) 1998-02-18
TW322677B (fr) 1997-12-11
JPH11500860A (ja) 1999-01-19
WO1997022231A1 (fr) 1997-06-19

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19971219

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V.

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19981224