EP 2312912 A2 20110420 - Circuit for a temperature control of a LED diode
Title (en)
Circuit for a temperature control of a LED diode
Title (de)
Schaltung zur Temperatursteuerung einer lichtemittierenden Diode
Title (fr)
Circuit pour le contrôle de la température d'une diode DEL
Publication
Application
Priority
SI 200900157 A 20090603
Abstract (en)
The subject of the invention is a circuit for a temperature control of a LED diode providing a possibility of changing luminous intensity of the LED diode as a function of ambient temperature, wherein an analogue voltage signal is generated as a function of detected temperature on a sensor circuit (1), wherein this signal is compared to a ramp frequency, which is internally set on a regulator (3) by means of a resistor (2) and the signal of the regulator (3) generated based on the intersection point between the ramp frequency and the generated analogue voltage signal determines the current, the size of which depends on the width of the signal of the regulator (3) generated as a function of detected temperature on the sensor circuit (1). Figure 3 should appear in publication.
IPC 8 full level
H05B 33/08 (2006.01); H05B 44/00 (2022.01)
IPC 8 main group level
F21V 29/00 (2015.01)
CPC (source: EP US)
H05B 45/18 (2020.01 - EP); H05B 45/40 (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 SE SI SK SM TR
Designated extension state (EPC)
BA ME RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 10468002 A 20100531; SI 200900157 A 20090603