EP 1066739 A1 20010110 - METHOD AND DEVICE FOR DETECTING THE RECTIFICATION EFFECT OCCURRING IN A GAS-DISCHARGE LAMP
Title (en)
METHOD AND DEVICE FOR DETECTING THE RECTIFICATION EFFECT OCCURRING IN A GAS-DISCHARGE LAMP
Title (de)
VERFAHREN UND VORRICHTUNG ZUM ERFASSEN DES IN EINER GASENTLADUNGSLAMPE AUFTRETENDEN GLEICHRICHTEFFEKTS
Title (fr)
PROCEDE ET DISPOSITIF PERMETTANT DE DETECTER L'EFFET REDRESSEUR APPARAISSANT DANS UNE LAMPE A DECHARGE
Publication
Application
Priority
- DE 19757635 A 19971223
- DE 19829434 A 19980701
- EP 9807428 W 19981119
Abstract (en)
[origin: US6400095B1] Process for the recognition of the rectifier effect appearing in a gas discharge lamp (G1, G2) and an electronic ballast, for the operation of gas discharge lamps (G1, G2), with which such a process finds employment. The electronic ballast includes a monitoring or control circuit (IC2) which monitors an operating parameter of a load circuit (E) of the electronic ballast, whereby this operating parameter corresponds to the lamp voltage or is dependent thereon. The monitoring circuit (IC2) integrates this monitored operating parameter over a full period and determines upon the presence of a rectifier effect if the integration result deviates from a predetermined integration desired value. Further, for the recognition of the rectifier effect, the duration of the positive and negative half-waves of the monitored parameter can be compared.
IPC 1-7
IPC 8 full level
H05B 41/28 (2006.01); H05B 41/298 (2006.01)
CPC (source: EP US)
H05B 41/2985 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE ES FI FR GB IT LI NL SE
DOCDB simple family (publication)
WO 9934647 A1 19990708; AT E213901 T1 20020315; AU 1339599 A 19990719; AU 738151 B2 20010913; DE 19882031 D2 20001012; DE 59803245 D1 20020404; EP 1066739 A1 20010110; EP 1066739 B1 20020227; NO 20003259 D0 20000622; NO 20003259 L 20000821; NO 325778 B1 20080714; NZ 505209 A 20021220; US 6400095 B1 20020604
DOCDB simple family (application)
EP 9807428 W 19981119; AT 98956934 T 19981119; AU 1339599 A 19981119; DE 19882031 T 19981119; DE 59803245 T 19981119; EP 98956934 A 19981119; NO 20003259 A 20000622; NZ 50520998 A 19981119; US 58210500 A 20000713