EP 2315499 B1 20130529 - LED power supply
Title (en)
LED power supply
Title (de)
LED-Stromversorgung
Title (fr)
Circuit d'alimentation pour LED
Publication
Application
Priority
AT 16582009 A 20091022
Abstract (en)
[origin: EP2315499A1] The supply unit has a clock oscillator (13) formed as a feedback Schmitt trigger and guiding a drain-source-voltage of a power transistor to an input of comparators (26) i.e. Schmitt trigger (14.3), through voltage dividers (RD, Rm). An output of the comparator is guided to a feedback point (A) of the oscillator through a coupling network (28) i.e. parallel resistor-capacitor member. An output signal of a control amplifier (18) is added to a signal proportional to a switching current, and a summing signal corresponding to the voltage value is assigned to the feedback point of the oscillator.
IPC 8 full level
H05B 44/00 (2022.01)
CPC (source: EP US)
H05B 45/385 (2020.01 - EP US)
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)
EP 2315499 A1 20110427; EP 2315499 B1 20130529; AT 508969 A1 20110515; AT 508969 B1 20110715
DOCDB simple family (application)
EP 10450158 A 20101021; AT 16582009 A 20091022