EP 1033066 A1 20000906 - CIRCUIT CONFIGURATION FOR OPERATING AT LEAST ONE DISCHARGE LAMP
Title (en)
CIRCUIT CONFIGURATION FOR OPERATING AT LEAST ONE DISCHARGE LAMP
Title (de)
SCHALTUNGSANORDNUNG ZUM BETRIEB MINDESTENS EINER ENTLADUNGSLAMPE
Title (fr)
CIRCUIT POUR ACTIONNER AU MOINS UNE LAMPE A DECHARGE
Publication
Application
Priority
- DE 9901011 W 19990401
- DE 19819027 A 19980429
Abstract (en)
[origin: DE19819027A1] The invention relates to a circuit configuration for operating at least one discharge lamp (LP) on a half bridge inverter (Q1, Q2), comprising at least one coupling condenser (C3) and a shut-off device (T1, A) which durably disconnects the half bridge inverter (Q1, Q2) when the lamp (LP) lights up with difficulty. According to the invention, the circuit configuration has means (V1, V2) for monitoring voltage drops on the at least one coupling condenser (C3) and for activating the shut-off device (T1, A) depending on the voltage drop detected in the at least one coupling condenser (C3). When the voltage in the coupling condenser (C3) clearly deviates for its normal value, for instance, due to the emergence of the rectifying effect at the end of the service life of the discharge lamp (LP), the half bridge inverter (Q1, Q2) is shut down by the shut-off device (T1, A).
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); Y10S 315/07 (2013.01 - EP US)
Citation (search report)
See references of WO 9956506A1
Designated contracting state (EPC)
AT BE DE FI FR GB IT NL SE
DOCDB simple family (publication)
DE 19819027 A1 19991104; CA 2295172 A1 19991104; EP 1033066 A1 20000906; JP 2002506562 A 20020226; US 6198231 B1 20010306; WO 9956506 A1 19991104
DOCDB simple family (application)
DE 19819027 A 19980429; CA 2295172 A 19990401; DE 9901011 W 19990401; EP 99924761 A 19990401; JP 55349399 A 19990401; US 44646199 A 19991222