Global patent index - EP 1056314 A2

EP 1056314 A2 2000-11-29 - Circuit for operating AC high pressure discharge lamps for a vehicle

Title (en)

Circuit for operating AC high pressure discharge lamps for a vehicle

Title (de)

Schaltung zum Betreiben einer Wechselstrom-Hochdruckgasentladungslampe für ein Kraftfahrzeug

Title (fr)

Circuit pour alimenter en courant alternatif des lampes à décharge pour un véhicule

Publication

EP 1056314 A2 (DE)

Application

EP 00110479 A

Priority

DE 19924097 A

Abstract (en)

The high pressure gas discharge bulb, such as a halogen lamp (GDL) is connected to a firing circuit that receives inputs fro control module. The firing circuit includes a transformer coupled to a symmetrical filter that incorporates a capacitor and two inductances. The capacitor is connected in parallel to the lamp.

Abstract (de)

Beschrieben wird eine Schaltung zum Betreiben einer Wechselstrom-Hochdruckgasentladungslampe für ein Kraftfahrzeug, mit einem Vorschaltgerät, einem Überlagerungszündgerät, einem symmetrischen Lampenfilter und einer Hochdruckgasentladungslampe, wobei das symmetrische Lampenfilter zwischen der Hochdruckgasentladungslampe und der Überlagerungszündung angeordnet ist, mit einer Filterkapazität parallel zur Hochdruckgasentladungslampe und je einer Drossel in den Zuführungsleitungen zu dieser Parallelschaltung, wobei zu der in der rückführenden Lampenleitung liegenden Drossel ein elektrisches Schaltelement parallel geschaltet ist. Hierdurch werden beim Zünden der Hochdruckgasentladungslampe hohe Impulsspannungen auf dieser Leitung, welche zu EMI-Störungen führen, wirkungsvoll vermieden. <IMAGE>

IPC 1-7 (main, further and additional classification)

H05B 41/288

IPC 8 full level (invention and additional information)

H05B 41/292 (2006.01)

CPC (invention and additional information)

H05B 41/292 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1056314 A2 20001129; EP 1056314 A3 20010912; EP 1056314 B1 20030917; AT 250321 T 20031015; DE 19924097 A1 20001130; ES 2207439 T3 20040601

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