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1. WO2000041287 - ARRANGEMENT FOR PROTECTING LOW-VOLTAGE CONTROL CIRCUITRY FROM EXTERNALLY APPLIED HIGH VOLTAGES, AND DIMMING BALLAST EMPLOYING SUCH AN ARRANGEMENT

Publication Number WO/2000/041287
Publication Date 13.07.2000
International Application No. PCT/US1999/028532
International Filing Date 02.12.1999
Chapter 2 Demand Filed 03.08.2000
IPC
H05B 41/285 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
26in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
28using static converters
282with semiconductor devices
285Arrangements for protecting lamps or circuits against abnormal operating conditions
H05B 41/392 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
36Controlling
38Controlling the intensity of light
39continuously
392using semiconductor devices, e.g. thyristor
CPC
H05B 41/2851
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
26in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
28using static converters
282with semiconductor devices
285Arrangements for protecting lamps or circuits against abnormal operating conditions
2851for protecting the circuit against abnormal operating conditions
H05B 41/3921
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
36Controlling
38Controlling the intensity of light
39continuously
392using semiconductor devices, e.g. thyristor
3921with possibility of light intensity variations
Y02B 20/186
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
20Energy efficient lighting technologies
16Gas discharge lamps, e.g. fluorescent lamps, high intensity discharge lamps [HID] or molecular radiators
18Low pressure and fluorescent lamps
183Specially adapted circuits
186Controlled bridges
Y10S 315/07
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
315Electric lamp and discharge devices: systems
07Starting and control circuits for gas discharge lamp using transistors
Y10S 323/905
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
323Electricity: power supply or regulation systems
905Lamp dimmer structure
Applicants
  • MOTOROLA INC. [US/US]; 1303 East Algonquin Road Schaumburg, IL 60196, US
Inventors
  • KONOPKA, John, G.; US
  • SODHI, Sameer; US
Agents
  • LABUDDA, Kenneth, D. ; Motorola, Inc. Intellectual Property Dept. 1303 East Algonquin Road Schaumburg, IL 60196, US
  • BESSONE, Carlo, S.; OSRAM SYLVANIA Inc., a corporation of the state of 100 Endicott Street Delaware Danvers, MA 01923, US
Priority Data
09/226,75806.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ARRANGEMENT FOR PROTECTING LOW-VOLTAGE CONTROL CIRCUITRY FROM EXTERNALLY APPLIED HIGH VOLTAGES, AND DIMMING BALLAST EMPLOYING SUCH AN ARRANGEMENT
(FR) DISPOSITIF DESTINE A PROTEGER UN CIRCUIT DE COMMANDE BASSE TENSION CONTRE DE HAUTES TENSIONS APPLIQUEES DE L'EXTERIEUR, EMPLOI DE CE DISPOSITIF POUR UN BALLAST DE GRADATION
Abstract
(EN)
An arrangement for protecting low-voltage control circuitry from externally applied high voltages comprises a voltage source (30) and a current-sourcing circuit (40). Current-sourcing cicuit (40) provides current to an external controller (18) in a normal manner when an external source of high voltage is not applied to the output connections (42, 44), protects itself (40) and the voltage source (30) from damage when an external source of high voltage is applied to the output connections (42,44), and provides current to the external controller (18) in a normal manner after the external source of high voltage is subsequently removed from the output connections (42, 44). The arrangement may be employed as the dimming interface circuit (900) of an electronic dimming ballast (60) for gas discharge lamps to protect ballast circuitry from damage due to wiring errors during installation.
(FR)
Cette invention concerne un dispositif permettant de protéger un circuit de commande basse tension contre des tensions élevées d'origine extérieure, qui comprend une source de tension (30) et un circuit fournissant du courant (40). Le circuit (40) alimente un organe de commande externe (18) de façon normale tant qu'une tension élevée n'est pas appliquée aux connexions de sortie (42, 44), protège lui-même et la source de tension (40) contre des dégâts provoqués par une tension élevée appliquée aux connexions de sortie (42, 44), et alimente l'organe de commande externe (18) de façon normale une fois que la tension élevée de provenance extérieure n'est plus appliquée aux connexions de sortie (42, 44). Le dispositif selon l'invention peut s'utiliser comme circuit d'interface (900) d'un ballast de gradation électronique (60) sur des lampes de décharge à gaz, en tant que moyen de protection du circuit de ballast contre des erreurs de câblage au montage.
Also published as
Latest bibliographic data on file with the International Bureau