EP 2540139 A2 20130102 - LED VOLTAGE MEASUREMENT
Title (en)
LED VOLTAGE MEASUREMENT
Title (de)
LED-SPANNUNGSMESSUNG
Title (fr)
MESURE DE TENSION POUR DEL
Publication
Application
Priority
- DE 102010002081 A 20100218
- EP 2011052329 W 20110217
Abstract (en)
[origin: WO2011101398A2] The invention relates to an operating circuit for at least one light-emitting diode path (L) with at least one light-emitting diode (LED), comprising a switched-node regulator circuit (SRS), to which a DC voltage is supplied and which provides a constant current for the at least one light-emitting diode path (L), wherein the primary side (P1) of a current mirror (S) is connected in parallel to the light-emitting diode path (L) and a measurement voltage (Umess) is tapped on the secondary side (P2) at a resistance (R2), which is proportional to the voltage drop at the light-emitting diode path (L).
IPC 8 full level
H05B 33/08 (2006.01); H05B 44/00 (2022.01); H05B 45/59 (2022.01)
CPC (source: EP US)
H05B 45/59 (2022.01 - EP US)
Citation (search report)
See references of WO 2011101398A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ 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)
DE 102010002081 A1 20110818; DE 112011100594 A5 20130124; DE 112011100594 B4 20150903; EP 2540139 A2 20130102; EP 2540139 B1 20161005; WO 2011101398 A2 20110825; WO 2011101398 A3 20140313
DOCDB simple family (application)
DE 102010002081 A 20100218; DE 112011100594 T 20110217; EP 11703901 A 20110217; EP 2011052329 W 20110217