EP 2124510 B1 20130102 - Method for controlling a phosphorescent light and light pre-switching device
Title (en)
Method for controlling a phosphorescent light and light pre-switching device
Title (de)
Verfahren zur Ansteuerung einer Leuchtstofflampe und Lampenvorschaltgerät
Title (fr)
Procédé de commande d'une lampe fluorescente et appareil de montage de lampes
Publication
Application
Priority
EP 08009105 A 20080516
Abstract (en)
[origin: EP2124510A1] The method involves applying an excitation alternating current voltage to a series resonant circuit using a half- bridge circuit. A resonant circuit current flowing through the resonant circuit is detected. Switches (TI1, TI2) e.g. n-conducting MOSFETs, are driven with a fundamental frequency or with an increased frequency with respect to the fundamental frequency depending on a temporal change in the resonant circuit current between temporally spaced-apart evaluation instants lying within a switched-on duration of one of the switches. An independent claim is also included for a lamp ballast comprising a series resonant circuit.
IPC 8 full level
H05B 41/285 (2006.01); H05B 41/282 (2006.01); H05B 41/295 (2006.01)
CPC (source: EP US)
H05B 41/2828 (2013.01 - EP US); H05B 41/2851 (2013.01 - EP US); H05B 41/2856 (2013.01 - EP US); H05B 41/295 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE FR GB IT
DOCDB simple family (publication)
EP 2124510 A1 20091125; EP 2124510 B1 20130102; US 2009284162 A1 20091119; US 8242702 B2 20120814
DOCDB simple family (application)
EP 08009105 A 20080516; US 46700809 A 20090515