EP 1884142 A1 20080206 - CIRCUIT ARRANGEMENT FOR OPERATION OF A DISCHARGE LAMP WITH A SWITCHABLE TUNED CAPACITOR
Title (en)
CIRCUIT ARRANGEMENT FOR OPERATION OF A DISCHARGE LAMP WITH A SWITCHABLE TUNED CAPACITOR
Title (de)
SCHALTUNGSANORDNUNG ZUM BETRIEB EINER ENTLADUNGSLAMPE MIT SCHALTBAREM RESONANZKONDENSATOR
Title (fr)
CIRCUIT DESTINE A L'UTILISATION D'UNE LAMPE A DECHARGE COMPORTANT UN CONDENSATEUR A RESONANCE COMMUTABLE
Publication
Application
Priority
- DE 2006000833 W 20060515
- DE 102005022592 A 20050517
Abstract (en)
[origin: WO2006122526A1] The invention relates to a circuit arrangement for operation of a discharge lamp (EL) with an inverter (INV) which generates a high-frequency alternating current from an input voltage and with a tuned circuit provided with at least one choke (L) and at least one tuned capacitor (C3, C4), by means of which the lamp (EL) is supplied, whereby at least one tuned capacitor (C4) is connected in series with a switch element (T1) parallel to the lamp (EL). The resonance capacitance for control of the lamp can be varied by switching in or out the tuned capacitor. For example, the resonance capacitance can be increased for pre-heating and reduced on lamp operation.
IPC 8 full level
H05B 41/295 (2006.01)
CPC (source: EP US)
H05B 41/295 (2013.01 - EP US)
Citation (search report)
See references of WO 2006122526A1
Designated contracting state (EPC)
DE FR GB HU IT
DOCDB simple family (publication)
DE 102005022592 A1 20061123; CA 2608999 A1 20061123; EP 1884142 A1 20080206; US 2009102393 A1 20090423; WO 2006122526 A1 20061123
DOCDB simple family (application)
DE 102005022592 A 20050517; CA 2608999 A 20060515; DE 2006000833 W 20060515; EP 06742341 A 20060515; US 92064506 A 20060515