EP 2498584 B1 20130925 - Ballast for high pressure gas discharge lamps
Title (en)
Ballast for high pressure gas discharge lamps
Title (de)
Vorschaltgerät für Hochdruckentladungslampe
Title (fr)
Ballast pour lampes à décharge haute pression
Publication
Application
Priority
EP 11157208 A 20110307
Abstract (en)
[origin: EP2498584A1] The arrangement (10) e.g. full bridge circuit arrangement, has a half-bridge inverter (12) connected to a gas discharge lamp (11) e.g. high-pressure discharge lamp. An impulse train (F1) of frequency reverses polarity of lamp current (iL) with low frequency. Another impulse train (F2) of higher frequency controls a level of the current, and control circuits (29- 31) control the inverter and the latter impulse train in an operating mode during impulse of the former impulse train to constantly raise the level of the current opposite to end of the impulse. An independent claim is also included for a method for operating a circuit arrangement for operating a discharge lamp.
IPC 8 full level
H05B 41/288 (2006.01); H05B 41/292 (2006.01)
CPC (source: EP)
H05B 41/2883 (2013.01); H05B 41/2928 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 11157208 A 20110307