EP 2198672 B1 20110831 - METHOD FOR DETERMINING OPERATIONAL PARAMETERS FOR A GAS DISCHARGE LAMP TO BE OPERATED WITH ELECTRONIC BALLAST AND CORRESPONDING BALLAST
Title (en)
METHOD FOR DETERMINING OPERATIONAL PARAMETERS FOR A GAS DISCHARGE LAMP TO BE OPERATED WITH ELECTRONIC BALLAST AND CORRESPONDING BALLAST
Title (de)
VERFAHREN ZUM BESTIMMEN VON BETRIEBSPARAMETERN EINER MIT EINEM ELEKTRONISCHEN VORSCHALTGERÄT ZU BETREIBENDEN GASENTLADUNGSLAMPE SOWIE EIN ENTSPRECHENDES VORSCHALTGERÄT
Title (fr)
PROCÉDÉ POUR DÉTERMINER DES PARAMÈTRES DE FONCTIONNEMENT D'UNE LAMPE À DÉCHARGE DE GAZ FONCTIONNANT AVEC UN BALLAST ÉLECTRONIQUE, ET BALLAST CORRESPONDANT
Publication
Application
Priority
- EP 2008008236 W 20080926
- DE 102007047142 A 20071002
- DE 102008012454 A 20080304
Abstract (en)
[origin: WO2009046891A1] In order to determine operational parameters of a gas discharge lamp (L) to be operated with an electronic ballast (V), the cold resistance (Tcold) and the hot resistance (Rhot) of a helix (W1) are determined at at least two different times during the preheating phase. During the preheating phase, the heating power or the heating current is kept constant or alternatively, a predetermined heating power or a predetermined heating current is set at the beginning of the preheating phase. Thus a split of the resistance values during the preheating phase is carried out. The differential resistance (Rdiff) is formed from the hot resistance (Rhot) and the cold resistance (Rcold) and is independent from the start temperature of the helix (W1). The differential resistance (Rdiff) is compared to stored reference values in order to set the operational parameters corresponding to the lamp type on the ballast (V).
IPC 8 full level
H05B 41/295 (2006.01); H05B 41/36 (2006.01)
CPC (source: EP)
H05B 41/295 (2013.01); H05B 41/36 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2009046891 A1 20090416; AT E523065 T1 20110915; CN 101816219 A 20100825; CN 101816219 B 20140402; DE 112008002296 A5 20100902; EP 2198672 A1 20100623; EP 2198672 B1 20110831
DOCDB simple family (application)
EP 2008008236 W 20080926; AT 08802680 T 20080926; CN 200880110077 A 20080926; DE 112008002296 T 20080926; EP 08802680 A 20080926