EP 0949852 A3 20010411 - Discharge lamp operating circuit with selectable operating conditions
Title (en)
Discharge lamp operating circuit with selectable operating conditions
Title (de)
Betriebsschaltung für Entladungslampen mit umschaltbaren Betriebszuständen
Title (fr)
Circuit d'alimentation de lampes à décharge avec sélection de mode de fonctionnement
Publication
Application
Priority
DE 19815624 A 19980407
Abstract (en)
[origin: EP0949852A2] The operating circuit has an electrolytic capacitor (C1) which is connected to a flip flop (SP) and this responds to turn off the power for a specific interval. The output signal (SPA) is independent of the interruption. The flip-flop is coupled to a reset device (SS) that is a conventional lock out device. Voltage limiting is provided by a Zener diode.
IPC 1-7
IPC 8 full level
H05B 41/392 (2006.01); H05B 41/36 (2006.01)
CPC (source: EP KR US)
H05B 41/36 (2013.01 - EP KR US); H05B 47/185 (2020.01 - EP)
Citation (search report)
- [X] US 4896079 A 19900123 - TABOR JIM [US]
- [X] US 4322632 A 19820330 - HART EDWARD F, et al
- [X] DE 19629207 A1 19980122 - HOLZER WALTER PROF DR H C ING [DE]
- [X] WO 9743880 A1 19971120 - PHILIPS ELECTRONICS NV [NL], et al
- [XP] WO 9827792 A1 19980625 - PHILIPS ELECTRONICS NV [NL], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0949852 A2 19991013; EP 0949852 A3 20010411; CA 2267486 A1 19991007; CN 1146307 C 20040414; CN 1231574 A 19991013; DE 19815624 A1 19991014; JP H11329778 A 19991130; KR 19990082996 A 19991125; US 6181074 B1 20010130
DOCDB simple family (application)
EP 99105264 A 19990315; CA 2267486 A 19990329; CN 99102102 A 19990208; DE 19815624 A 19980407; JP 10037699 A 19990407; KR 19990011983 A 19990407; US 28012299 A 19990326