EP 2067385 A1 20090610 - CIRCUIT ARRANGEMENT AND METHOD FOR STARTING A DISCHARGE LAMP
Title (en)
CIRCUIT ARRANGEMENT AND METHOD FOR STARTING A DISCHARGE LAMP
Title (de)
SCHALTUNGSANORDNUNG UND VERFAHREN ZUM ZÜNDEN EINER ENTLADUNGSLAMPE
Title (fr)
ARRANGEMENT DE CIRCUIT ET PROCÉDÉ POUR ALLUMER UNE LAMPE À DÉCHARGE
Publication
Application
Priority
EP 2006066691 W 20060925
Abstract (en)
[origin: WO2008037290A1] The present invention relates to a circuit arrangement for starting a discharge lamp (20) with a driving apparatus, at whose output a drive signal with a predeterminable frequency can be provided; an inverter (14), which is coupled to the output of the drive apparatus and at whose output a square-wave signal with a predeterminable duty factor can be provided; a load circuit (16), which is coupled to the output of the inverter (14) and has at least one connection for the discharge lamp (20); a first control loop (R<SUB>i</SUB>) with a first reference variable, a first manipulated variable and a first controlled variable, wherein the first control loop (R<SUB>i</SUB>) has a first time constant; a second control loop (R<SUB>a</SUB>) with a second reference variable, an auxiliary manipulated variable and a second controlled variable, wherein the second control loop (R<SUB>a</SUB>) has a second time constant; wherein the auxiliary manipulated variable of the second control loop (R<SUB>a</SUB>) represents the first reference variable of the first control loop (R<SUB>i</SUB>), and the first time constant is smaller than the second time constant at least by a factor of 10, and wherein the first manipulated variable represents the duty factor of the output signal of the inverter (14). The invention furthermore relates to a method for starting a discharge lamp (20) using such a circuit arrangement.
IPC 8 full level
H05B 41/282 (2006.01)
CPC (source: EP US)
H05B 41/282 (2013.01 - EP US); Y02B 20/00 (2013.01 - EP US)
Citation (search report)
See references of WO 2008037290A1
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
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2008037290 A1 20080403; AU 2006348908 A1 20080403; AU 2006348908 B2 20140403; CN 101529991 A 20090909; CN 101529991 B 20121121; EP 2067385 A1 20090610; US 2010045201 A1 20100225; US 8093836 B2 20120110
DOCDB simple family (application)
EP 2006066691 W 20060925; AU 2006348908 A 20060925; CN 200680055909 A 20060925; EP 06793799 A 20060925; US 44240709 A 20090323