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1. WO1996004769 - A HIGH INTENSITY DISCHARGE LAMP BALLAST WITH TRANSIENT PROTECTED POWER FACTOR CORRECTION

Publication Number WO/1996/004769
Publication Date 15.02.1996
International Application No. PCT/IB1995/000573
International Filing Date 20.07.1995
IPC
H05B 41/18 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
16in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac
18having a starting switch
CPC
H05B 41/18
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
16in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, ; or with network frequencies
18having a starting switch
H05B 41/46
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
46Circuits providing for substitution in case of failure of the lamp
H05B 47/20
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
47Circuit arrangements for operating light sources in general, i.e. where the type of the light source is not relevant
20Responsive to malfunctions or to light source life; for protection
H05B 47/29
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
47Circuit arrangements for operating light sources in general, i.e. where the type of the light source is not relevant
20Responsive to malfunctions or to light source life; for protection
29Circuits providing for substitution of the light source in case of its failure
Applicants
  • PHILIPS ELECTRONICS N.V. [NL/NL]; Groenewoudseweg 1 NL-5621 BA Eindhoven, NL
  • PHILIPS NORDEN AB [SE/SE]; Kottbygatan 5, Kista S-164 85 Stockholm, SE (SE)
Inventors
  • BROWN, Allan, E.; US
Agents
  • DUSSELDORP, Jan, Charles; Internationaal Octrooibureau B.V. P.O. Box 220 NL-5600 AE Eindhoven, NL
Priority Data
08/283,11029.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A HIGH INTENSITY DISCHARGE LAMP BALLAST WITH TRANSIENT PROTECTED POWER FACTOR CORRECTION
(FR) BALLAST DE LAMPE A DECHARGE A HAUTE INTENSITE POURVU D'UN DISPOSITIF DE CORRECTION DU FACTEUR DE PUISSANCE PROTEGE CONTRE LES SURTENSIONS TRANSITOIRES
Abstract
(EN)
A ballast for lighting a high intensity discharge lamp having a power factor correction scheme. The power factor correction scheme includes a triac. To prevent the triac from damage when the lamp is not lit and power line transients are present, the triac is turned ON. The triac is also turned ON whenever the lamp is lit.
(FR)
L'invention concerne un ballast destiné à l'allumage d'une lampe à décharge à haute intensité, pourvu d'un dispositif de correction du facteur de puissance, lequel comprend un triac. Pour empêcher tout endommagement du triac lorsque la lampe n'est pas allumée et lorsque se produisent des transitoires du secteur, le triac est mis sous tension. Le triac est également mis sous tension chaque fois que la lampe est allumée.
Also published as
Latest bibliographic data on file with the International Bureau