EP 1276354 A1 20030115 - Ballast with random switch-on times
Title (en)
Ballast with random switch-on times
Title (de)
EVG mit Zufallszahlen-Einschaltzeiten
Title (fr)
Ballast à amorçage aleatoire
Publication
Application
Priority
EP 01650080 A 20010710
Abstract (en)
A load conditioner (1) for the protection of lamp units (2) in a light system in which each lamp unit (2) comprises a lamp and lamp control circuitry (3), including a ballast circuit (4), the lighting system having a main power input switch for connecting the lighting system to an AC power supply, the load conditioner (1) having randomising means to vary the time at which the connection of the lamp unit (2) to the power supply occurs. There is further described a method of controlling the operation of such a lighting system. <IMAGE>
IPC 1-7
IPC 8 full level
H05B 41/00 (2006.01); H05B 41/285 (2006.01)
CPC (source: EP)
H05B 41/2856 (2013.01)
Citation (search report)
- [X] WO 0072639 A1 20001130 - HOLOPHANE CORP [US]
- [X] US 4477748 A 19841016 - GRUBBS CALVIN E [US]
- [A] US 5936357 A 19990810 - CROUSE KENT E [US], et al
- [A] GB 2098013 A 19821110 - THORN EMI LTD
- [A] EP 0349707 A1 19900110 - WIDE LITE INTERNATIONAL CORP [US]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1276354 A1 20030115; AT E369028 T1 20070815; DE 60221533 D1 20070913; EP 1410694 A1 20040421; EP 1410694 B1 20070801; WO 03007666 A1 20030123
DOCDB simple family (application)
EP 01650080 A 20010710; AT 02745758 T 20020710; DE 60221533 T 20020710; EP 02745758 A 20020710; IE 0200100 W 20020710