EP 1635620 B1 20071128 - Electronic ballast with charge pump for discharge lamps with pre-heated electrodes
Title (en)
Electronic ballast with charge pump for discharge lamps with pre-heated electrodes
Title (de)
Elektronisches Vorschaltgerät mit Pumpschaltung für Entladungslampe mit vorheizbaren Elektroden
Title (fr)
Ballast électronique de pompe a charge pour lampes a décharge avec électrodes de préchauffage
Publication
Application
Priority
DE 102004044180 A 20040913
Abstract (en)
[origin: EP1635620A1] The ballast has a pump circuit and a preheating transformer (TR2) supplying preheating power to preheatable electrodes connected to a secondary side of a discharge lamp. The ballast operates a converter during preheating with a frequency raised by comparison with open circuit resonant frequency of the ballast to supply a primary side of the transformer, during a preheating phase before the lamp is ignited. An independent claim is also included for a method for operating a discharge lamp.
IPC 8 full level
H05B 41/04 (2006.01)
CPC (source: EP KR US)
H05B 41/26 (2013.01 - KR); H05B 41/295 (2013.01 - EP US); Y10S 315/05 (2013.01 - EP US); Y10S 315/07 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1635620 A1 20060315; EP 1635620 B1 20071128; AT E379953 T1 20071215; CA 2518768 A1 20060313; CN 1750731 A 20060322; CN 1750731 B 20110126; DE 102004044180 A1 20060316; DE 502005002087 D1 20080110; KR 101171686 B1 20120806; KR 20060051258 A 20060519; TW 200618676 A 20060601; US 2006055339 A1 20060316; US 7193375 B2 20070320
DOCDB simple family (application)
EP 05017529 A 20050811; AT 05017529 T 20050811; CA 2518768 A 20050912; CN 200510099504 A 20050913; DE 102004044180 A 20040913; DE 502005002087 T 20050811; KR 20050085282 A 20050913; TW 94131294 A 20050912; US 21380205 A 20050830