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hi everyone i made a test, i assembled two different type LED (citizen/cree) on the same heat sink, the power of the LED is same (36W) but in the first case i got a temperature (TC) of 70 °c in the second case i got 90 °c....so what the reason of this gap? how can control this behaviour during...

hi everyone i made a test, i assembled two different type LED (citizen/cree) on the same heat sink, the power of the LED is same (36W) but in the first case i got a temperature (TC) of 70 °c in the second case i got 90 °c....so what the reason of this gap?? thanks have a good dday

Hi guys Is right talking about the inrush current in a circuit composed by a power led and power supply ( 700mA costant current output )? If yes ...how can i get this value? Thanks in advance

Hi guys I have to resolve a fea analisys ...all go well but at the end in the solution task i can't find the result for the bending moment Nm ...can you help me Thanks in advance

Hi folks, Regarding the object, is an induttance load, capacitive load or a resistive load? Thank in advance

Hi folks I have to make a project for a first time, the point is to evaluate the electric motor that make up and down to a chandelier that weigh is 300 kg, i have to find also the way to disconnect the power of chandelier each time i get down or up it...also the balancing of it is a matter Have...

Hi folks Do you know the reason why the led driver loss a bit of power when it become hot? Tks

Hi to all I have a simple lighting fixture model, i would like to calculate the temperature on the led. I put the fixture in the fluid mesh (air) but the heat dosen't excange betwen the body an the air. So the fluid temperature is always 25 degree. how i can connect the body fixture and the...