Good evening, I annoy you because I really am very bad with electronics, I assure you that I was reading before asking, voltage drop, resistance, series or parallel, but I really can't understand. I will comment, I have the plate with 40 LEDs that can be seen in the image, also include 20 resistors. I recovered this plate from an emergency light whose electronics literally burned. My question is, considering that they are all white lods (I read that depending on the color varies the tension) what food do I need to work? I tried to do the calculation of voltage and intensity, but I really failed to understand it. On the back it has a form, in which I could discover that every 2 leds there is a resistance, maybe I will provide that information, anyway you can see it in the images. I also want to add that there is a description on the board, it says " 4v-10r and 6v68r ", I do not know if it is 4 or 6v what is needed, I suppose it will be the same board for two different models, and I would also need to know what intensity the source must have in order to lift the entire circuit. From already thank you very much