I do not know, I have trouble with English. The important thing is that you have the flow at the end of this time.Obamot wrote:izentrop wrote:Y do not give the power efficiency at normal ??
For all those that I have seen selling (in terms of replacing the halogen bulb headlights H4 projectors for example) they give them to 85 ° C, I think to get to 2'500 Lumens XHP50 >>> with 18 Watts is the optimum temperature? (They would take 150 ° C, so they operate at half their potential resistance) In any case it is designed to withstand, in the specifications are still around 15'000 hours or 30'000.
They are in principle equipped with a fan with a temperature sensor so as not to exceed 85 ° C (if I am not mistaken, but be careful, we are talking about CREE). For me, the value at 25 ° C is theoretical in order to have good resistance in the spectrum, so as a "low" point of reference, because under voltage it heats up very, very quickly. The MT-G2 as projector (without fan) is given at 50'000hr >>> What do you think?
12 page of the pdf, a test curve shows that flow characteristics decrease with temperature and time. Is there a lack of consistency with the temperature?