EP 2248397 A2 20101110 - LIGHTING SYSTEM AND METHOD FOR TESTING WHETHER AT LEAST TWO GAS DISCHARGE LAMPS TO BE OPERATED BY AN EVG ARE THE SAME TYPE
Title (en)
LIGHTING SYSTEM AND METHOD FOR TESTING WHETHER AT LEAST TWO GAS DISCHARGE LAMPS TO BE OPERATED BY AN EVG ARE THE SAME TYPE
Title (de)
BELEUCHTUNGSSYSTEM UND VERFAHREN ZUM PRÜFEN, OB MINDESTENS ZWEI MIT EINEM EVG ZU BETREIBENDE GASENTLADUNGSLAMPEN VOM GLEICHEN TYP SIND
Title (fr)
SYSTÈME D'ÉCLAIRAGE ET PROCÉDÉ DESTINÉ À CONTRÔLER SI AU MOINS DEUX LAMPES À DÉCHARGE GAZEUSE DESTINÉES À FONCTIONNER AVEC UN BALLAST ÉLECTRONIQUE SONT DU MÊME TYPE
Publication
Application
Priority
- EP 2009001491 W 20090303
- DE 102008012453 A 20080304
Abstract (en)
[origin: EP2355626A2] The method involves directly or indirectly measuring a coil voltage and a coil current of heating coils (W1b, W2b) of gas-discharge lamps (L1, L2) at a time period. Coil resistances of the heating coils are measured from the measured values of the coil voltage and the coil current of the heating coils of the gas-discharge lamps. An absolute differential resistance from the coil resistances is smaller than a high reference value. The gas-discharge lamps are determined as not same-type, when the absolute differential resistance lies between the high reference value and a low reference value. Independent claims are also included for the following: (1) a circuit e.g. integrated circuit, for implementing a method for testing whether two gas-discharge lamps are of same-type (2) an electronic ballast comprising a unit for generating a constant coil voltage.
IPC 8 full level
H05B 41/295 (2006.01); H05B 37/02 (2006.01)
CPC (source: AT EP)
H05B 41/295 (2013.01 - AT EP)
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 MK MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2355626 A2 20110810; EP 2355626 A3 20140205; EP 2355626 B1 20170208; AT 517953 A5 20170615; AT 517953 B1 20170615; AT E520288 T1 20110815; CN 102027809 A 20110420; CN 102027809 B 20141001; DE 102008012453 A1 20090910; DE 112009000312 A5 20110127; EP 2248397 A2 20101110; EP 2248397 B1 20110810; WO 2009112180 A2 20090917; WO 2009112180 A3 20100304; WO 2009112180 A8 20091105
DOCDB simple family (application)
EP 11164424 A 20090303; AT 09719813 T 20090303; AT 90012009 A 20090303; CN 200980107490 A 20090303; DE 102008012453 A 20080304; DE 112009000312 T 20090303; EP 09719813 A 20090303; EP 2009001491 W 20090303