EP 1854200 A2 20071114 - ELECTRONIC DISCHARGE ROYER OSCILLATOR
Title (en)
ELECTRONIC DISCHARGE ROYER OSCILLATOR
Title (de)
ROYER-OSZILLATOR MIT ELEKTRONISCHEN ENTLADUNGEN
Title (fr)
OSCILLATEUR DE ROYER A ELECTRONIQUE DE DECHARGE
Publication
Application
Priority
- EP 2006060308 W 20060227
- FR 0502064 A 20050301
Abstract (en)
[origin: WO2006092390A2] The invention concerns mainly the field of illuminated light boxes used for illuminating viewing screens and optical valve display, in particular for liquid crystal matrix displays also known as LCD's. The light sources used are generally fluorescent tubes powered in high voltage by devices comprising electronic Royer oscillators. Said electronic oscillators do not enable high luminance dynamics to be easily achieved, which may be required for certain applications. The inventive oscillator comprises an electronic device for discharging stored electrical power, said discharge device being controlled by an electronic chopping modulation control device, thereby enabling high luminance dynamics to be achieved. The invention provides several embodiments.
IPC 8 full level
H02M 7/538 (2007.01)
CPC (source: EP US)
H02M 7/53846 (2013.01 - EP US); H02M 7/53862 (2013.01 - EP US); H05B 41/2824 (2013.01 - EP US); H05B 41/3927 (2013.01 - EP US)
Citation (search report)
See references of WO 2006092390A2
Designated contracting state (EPC)
BE DE NL
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
FR 2882870 A1 20060908; FR 2882870 B1 20070810; EP 1854200 A2 20071114; JP 2008536459 A 20080904; US 2008170181 A1 20080717; US 7893630 B2 20110222; WO 2006092390 A2 20060908; WO 2006092390 A3 20071025
DOCDB simple family (application)
FR 0502064 A 20050301; EP 06708538 A 20060227; EP 2006060308 W 20060227; JP 2007557487 A 20060227; US 81778406 A 20060227