EP 1025746 A1 20000809 - CIRCUIT FOR OPERATING AT LEAST ONE DISCHARGE LAMP
Title (en)
CIRCUIT FOR OPERATING AT LEAST ONE DISCHARGE LAMP
Title (de)
SCHALTUNGSANORDNUNG ZUM BETRIEB MINDESTENS EINER ENTLADUNGSLAMPE
Title (fr)
CIRCUIT POUR FAIRE FONCTIONNER AU MOINS UNE LAMPE A DECHARGE
Publication
Application
Priority
- DE 9901010 W 19990401
- DE 19837728 A 19980820
Abstract (en)
[origin: US6288500B1] The invention relates to a circuit arrangement for operating at least one discharge lamp, the circuit arrangement having a half-bridge inverter (Q10, Q11) with a downstream load circuit (L1, C10, LP1, C11), at least one coupling capacitor (C11) which is connected to the load circuit (L1, C10, LP1, C11) and to the half-bridge inverter (Q10, Q11), and a drive device (A1) of the half-bridge inverter (Q10, Q11). According to the invention, the circuit arrangement has a reference voltage source (R13, R14) and a detector circuit (DE1) which detector circuit compares the voltage drop across the at least one coupling capacitor (C11) or the voltage drop, divided downwards by a voltage divider, across the at least one coupling capacitor (C11) with the reference voltage of the reference voltage source (R13, R14), and generates an output signal for driving the half-bridge inverter (Q10, Q11).
IPC 1-7
IPC 8 full level
H05B 41/24 (2006.01); H05B 41/298 (2006.01)
CPC (source: EP US)
H05B 41/2985 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE FI FR GB IT NL SE
DOCDB simple family (publication)
US 6288500 B1 20010911; AT E223638 T1 20020915; CA 2306815 A1 20000302; DE 19837728 A1 20000224; DE 59902543 D1 20021010; EP 1025746 A1 20000809; EP 1025746 B1 20020904; JP 2002523888 A 20020730; JP 4315598 B2 20090819; WO 0011916 A1 20000302
DOCDB simple family (application)
US 50998600 A 20000405; AT 99924760 T 19990401; CA 2306815 A 19990401; DE 19837728 A 19980820; DE 59902543 T 19990401; DE 9901010 W 19990401; EP 99924760 A 19990401; JP 2000567056 A 19990401