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1. (WO1998049874) DIMMABLE BALLAST APPARATUS CONTROLLING FLUORESCENT LAMP POWER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/049874 International Application No.: PCT/US1998/008345
Publication Date: 05.11.1998 International Filing Date: 24.04.1998
Chapter 2 Demand Filed: 24.11.1998
IPC:
H05B 41/28 (2006.01) ,H05B 41/392 (2006.01)
H ELECTRICITY
05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
B
ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41
Circuit arrangements or apparatus for igniting or operating discharge lamps
14
Circuit arrangements
26
in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
28
using static converters
H ELECTRICITY
05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
B
ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41
Circuit arrangements or apparatus for igniting or operating discharge lamps
14
Circuit arrangements
36
Controlling
38
Controlling the intensity of light
39
continuously
392
using semiconductor devices, e.g. thyristor
Applicants:
PACIFIC SCIENTIFIC COMPANY [US/US]; Pacific Scientific Motion Technology Division 110 Fordham Road Wilmington, MA 01887, US
Inventors:
MOISIN, Mihail, S.; US
Agent:
HAGLER, James, T.; Knobbe, Martens, Olson and Bear, LLP 16th floor 620 Newport Center Drive Newport Beach, CA 92660, US
ALTMAN, Daniel; Knobbe, Martens, Olson & Bear 620 Newport Center Drive Sixteenth Floor Newport Beach, CA 92660-8016, US
Priority Data:
08/900,20025.07.1997US
60/044,92925.04.1997US
Title (EN) DIMMABLE BALLAST APPARATUS CONTROLLING FLUORESCENT LAMP POWER
(FR) BALLAST DE GRADATION UTILISE POUR REGLER LE COURANT ALIMENTANT UNE LAMPE FLUORESCENTE
Abstract:
(EN) A self-resonant electronic ballast (40) having a split inductor (L2-2) and a duty cycle controller (145). The ballast also has a feedback path to a booster circuit (140).
(FR) L'invention porte sur un ballast (40) électronique de résonance pourvu d'une bobine d'induction fendue (L2-2) et un contrôleur (145) de cycle de travail. Le ballast possède également une chaîne de retour vers le circuit d'amplification (140).
front page image
Designated States: CA
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)