EP 2140735 B1 20110420 - CIRCUIT CONFIGURATION FOR STARTING AND OPERATING AT LEAST ONE DISCHARGE LAMP
Title (en)
CIRCUIT CONFIGURATION FOR STARTING AND OPERATING AT LEAST ONE DISCHARGE LAMP
Title (de)
SCHALTUNGSANORDNUNG ZUM ZÜNDEN UND BETREIBEN MINDESTENS EINER ENTLADUNGSLAMPE
Title (fr)
ENSEMBLE CIRCUIT SERVANT À AMORCER ET À FAIRE FONCTIONNER AU MOINS UNE LAMPE À DÉCHARGE
Publication
Application
Priority
EP 2007053945 W 20070423
Abstract (en)
[origin: WO2008128574A1] The present invention relates to a circuit configuration for starting and operating at least one discharge lamp (15, 15') having an inverter comprising at least one first (11) and a second main transistor (20) in a half-bridge arrangement, having a transformer and a first and a second control circuit for controlling the first main transistor, wherein each control circuit comprises an interval timer (32 to 40; 32' to 40') the time constants of which vary as a function of the voltage present at the input of each interval timer, each interval timer (32 to 40; 32' to 40') comprising at least one first auxiliary transistor (35; 35'), the control electrode of the first auxiliary transistor (35; 35') being coupled to the center point of a frequency-dependent voltage divider comprising at least an inductor (33; 33') and an ohmic resistor (34; 34'), the voltage dropping at the ohmic resistor (34; 34') being coupled to the control section of the first auxiliary transistor (35' 35'), at least one interval timer (32 to 40; 32' to 40') comprising a second auxiliary transistor (38; 38') connected in parallel to the associated inductor (33; 33'), and the second auxiliary transistor (38; 38') comprising a control circuit designed to bridge the associated inductor (33; 33') as a function of the voltage on the associated secondary winding of the transformer by the second auxiliary transistor (38;38').
IPC 8 full level
H05B 41/00 (2006.01)
CPC (source: EP US)
H05B 41/2825 (2013.01 - EP US); Y10S 315/05 (2013.01 - EP US); Y10S 315/07 (2013.01 - EP US)
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 MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008128574 A1 20081030; AT E506835 T1 20110515; CN 101641999 A 20100203; CN 101641999 B 20130206; DE 502007007030 D1 20110601; EP 2140735 A1 20100106; EP 2140735 B1 20110420; US 2010033104 A1 20100211; US 8076864 B2 20111213
DOCDB simple family (application)
EP 2007053945 W 20070423; AT 07728402 T 20070423; CN 200780052361 A 20070423; DE 502007007030 T 20070423; EP 07728402 A 20070423; US 53215607 A 20070423