Global Patent Index - EP 1994805 A1

EP 1994805 A1 20081126 - CIRCUIT ARRANGEMENT AND METHOD FOR OPERATING A HIGH-PRESSURE DISCHARGE LAMP

Title (en)

CIRCUIT ARRANGEMENT AND METHOD FOR OPERATING A HIGH-PRESSURE DISCHARGE LAMP

Title (de)

SCHALTUNGSANORDNUNG UND VERFAHREN ZUM BETREIBEN EINER HOCHDRUCKENTLADUNGSLAMPE

Title (fr)

ENSEMBLE CIRCUIT ET PROCÉDÉ POUR FAIRE FONCTIONNER UNE LAMPE À DÉCHARGE HAUTE PRESSION

Publication

EP 1994805 A1 20081126 (DE)

Application

EP 07712190 A 20070208

Priority

  • EP 2007051230 W 20070208
  • DE 102006007754 A 20060220

Abstract (en)

[origin: DE102006007754A1] The arrangement has a voltage measuring device (10) measuring an instantaneous value of voltage by a high pressure discharge lamp (LA). A reference value device (12) provides an upper threshold for the voltage. A comparison device (14) compares the value with the threshold. The comparison device is designed such that the value lies below the threshold to control a control device (16) such that a predetermined duty cycle of signals is increased for a preset time period. A switch (S1) of a half bridge circuit is controlled during in-phase of another switch (S2) with the duty cycle. An independent claim is also included for an operating method for a high pressure discharge lamp in a circuit arrangement.

IPC 8 full level

H05B 41/288 (2006.01)

CPC (source: EP)

H05B 41/2883 (2013.01); H05B 41/2928 (2013.01); Y10S 315/07 (2013.01)

Citation (search report)

See references of WO 2007096253A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

DE 102006007754 A1 20070823; AT 454027 T 20100115; CA 2642576 A1 20070830; CN 101385399 A 20090311; CN 101385399 B 20130313; DE 502007002487 D1 20100211; EP 1994805 A1 20081126; EP 1994805 B1 20091230; US 2009295302 A1 20091203; US 8089220 B2 20120103; WO 2007096253 A1 20070830

DOCDB simple family (application)

DE 102006007754 A 20060220; AT 07712190 T 20070208; CA 2642576 A 20070208; CN 200780005946 A 20070208; DE 502007002487 T 20070208; EP 07712190 A 20070208; EP 2007051230 W 20070208; US 22391807 A 20070208