EP 1424881 B1 20060823 - Method and device for driving a fluorescent lamp
Title (en)
Method and device for driving a fluorescent lamp
Title (de)
Verfahren zum Betrieb mindestens einer Niederdruckentladungslampe und Betriebsgerät für mindestens eine Niederdruckentladungslampe
Title (fr)
Dispositif et méthode pour commander une lampe fluorescente
Publication
Application
Priority
DE 10255737 A 20021128
Abstract (en)
[origin: EP1424881A1] The method involves monitoring for the rectifier effect in at least one lamp (FL1, 2) to detect the end of its operating life. The rectifier effect is monitored for by evaluating the d.c. voltage drop across the electrical connections of the at least one discharge lamp, the electrical power fed into an associated d.c./a.c. converter (T1,T2) or a proportional first parameter and a second parameter correlated with the lamp's burning voltage. AN Independent claim is also included for the following: (a) an operating device for at least one low pressure discharge lamp.
IPC 8 full level
H05B 41/298 (2006.01)
CPC (source: EP US)
H05B 41/2985 (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 IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1424881 A1 20040602; EP 1424881 B1 20060823; AT E337695 T1 20060915; CA 2450918 A1 20040528; DE 10255737 A1 20040609; DE 50304728 D1 20061005; US 2004104691 A1 20040603; US 6930454 B2 20050816
DOCDB simple family (application)
EP 03025649 A 20031105; AT 03025649 T 20031105; CA 2450918 A 20031126; DE 10255737 A 20021128; DE 50304728 T 20031105; US 71300403 A 20031117