EP 1605734 B1 20110921 - Electronic ballast
Title (en)
Electronic ballast
Title (de)
Elektronisches Vorschaltgerät
Title (fr)
Ballast electronique
Publication
Application
Priority
- EP 02746706 A 20020624
- US 88784801 A 20010622
- US 603601 A 20011205
Abstract (en)
[origin: WO03001855A1] An electronic ballast for driving a gas discharge lamp includes a rectifier, a valley-fill circuit, an inverter having first and second series-connected controllably conductive device having complementary duty cycles, a control circuit for controlling the controllably conductive device, and an independent cat ear power supply to provide power to the ballast control circuits. The result is a ballast having substantially improved THD, and current crest factor. In a preferred embodiment, the valley-fill circuit includes an energy storage device that stores energy in response to a controllably conductive device. In an especially preferred embodiment, the controllably conductive device of the valley-fill circuit is also one of the controllably conductive devices of the inverter.
IPC 8 full level
H05B 41/28 (2006.01); H05B 41/282 (2006.01); H02M 7/12 (2006.01)
CPC (source: EP)
H05B 41/28 (2013.01)
Citation (examination)
- US 5517403 A 19960514 - MAEHARA MINORU [JP]
- US 5764496 A 19980609 - SATO KATSUMI [JP], 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 TR
DOCDB simple family (publication)
WO 03001855 A1 20030103; WO 03001855 A8 20040506; AT E448670 T1 20091115; AT E525895 T1 20111015; AU 2002316408 B2 20070906; DE 60234339 D1 20091224; EP 1605734 A1 20051214; EP 1605734 B1 20110921; ES 2336082 T3 20100408; IL 159465 A0 20040601; JP 2004533200 A 20041028; JP 4031429 B2 20080109
DOCDB simple family (application)
US 0220281 W 20020624; AT 02746706 T 20020624; AT 05017725 T 20020624; AU 2002316408 A 20020624; DE 60234339 T 20020624; EP 05017725 A 20020624; ES 02746706 T 20020624; IL 15946502 A 20020624; JP 2003508110 A 20020624