Global patent index - EP 1033066 A1

EP 1033066 A1 2000-09-06 - 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

EP 1033066 A1 (DE)

Application

EP 99924761 A

Priority

  • DE 9901011 W
  • DE 19819027 A

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 (main, further and additional classification)

H05B 41/28

IPC 8 full level (invention and additional information)

H05B 41/24 (2006.01); H05B 41/298 (2006.01)

CPC (invention and additional information)

H05B 41/2985 (2013.01); Y10S 315/07 (2013.01)

Citation (search report)

See references of WO 9956506A1

Designated contracting state (EPC)

AT BE DE FI FR GB IT NL SE

EPO simple patent family

DE 19819027 A1 19991104; CA 2295172 A1 19991104; EP 1033066 A1 20000906; JP 2002506562 A 20020226; US 6198231 B1 20010306; WO 9956506 A1 19991104

INPADOC legal status

2005-10-26 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20050407

2003-01-22 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20021206

2000-09-06 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000626

2000-09-06 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE DE FI FR GB IT NL SE