EP 1920642 B1 20100217 - BALLAST FOR A DISCHARGE LAMP WITH ADAPTIVE PREHEATING
Title (en)
BALLAST FOR A DISCHARGE LAMP WITH ADAPTIVE PREHEATING
Title (de)
VORSCHALTGERÄT FÜR EINE ENTLADUNGSLAMPE MIT ADAPTIVER VORHEIZUNG
Title (fr)
BALLAST POUR UNE LAMPE A DECHARGE A PRECHAUFFAGE ADAPTATIF
Publication
Application
Priority
- EP 2006065801 W 20060830
- DE 202005013754 U 20050831
Abstract (en)
[origin: US2010156299A1] The present invention relates to an electronic ballast for discharge lamps (LA) which have preheatable electrodes (E1, E2). The electronic ballast has a measuring apparatus (M), which is designed to measure, during the preheating process, a variable, which is correlated with the electrode temperature increased by the preheating, of at least one of the electrodes (E1, E2) of a connected discharge lamp (LA), and a control apparatus (C), which is designed to match the electrode temperature, during the preheating process, in response to the measurement by adjusting an operational parameter of the electronic ballast. Furthermore, the electronic ballast is designed to detect cross discharges or a sufficient operating temperature of one of the electrodes (E1, E2) and possibly to ignite the discharge.
IPC 8 full level
H05B 41/295 (2006.01)
CPC (source: EP US)
H05B 41/295 (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)
US 2010156299 A1 20100624; US 8134297 B2 20120313; AT E458383 T1 20100315; CN 101253818 A 20080827; CN 101253818 B 20120718; DE 202005013754 U1 20051117; DE 502006006192 D1 20100401; EP 1920642 A1 20080514; EP 1920642 B1 20100217; JP 2009506509 A 20090212; JP 4723646 B2 20110713; WO 2007025976 A1 20070308
DOCDB simple family (application)
US 99008006 A 20060830; AT 06806734 T 20060830; CN 200680031387 A 20060830; DE 202005013754 U 20050831; DE 502006006192 T 20060830; EP 06806734 A 20060830; EP 2006065801 W 20060830; JP 2008528508 A 20060830