LED Xmas Lights

[StirCrazy]

I made one mistake on the previous post, you want your LED voltage to add up to 80% of your supply voltage so if you have a 80 volts worth of LEDs then use a 100V powesupply with a controled output of 15 milliamps.

so my mistake you can have a higher voltage as long as your amprage is limited. (thats what you get for typing when your tired.. )

Originally Posted by KrazyKuch

[..Also on the LED XMas lights there is a resistor for every single LED.

Is there, thats good to know, now can you be sure of that for every brand? I know the ones out here at walmart are not power smart aproved, while other ones are. what about the ones with 3 cords? is there not one resister for each series?

As for the amprage for LEDs every brand is different pretty much I have some that take 20mA and some that ask for 45mA and I think a couple that are 28ma (and thay are all blue.) but the most commen is 20ma (this is also the max amprage), I usaly run my 20's at about 16mA, but I have run them at 20mA for a year with no problem. It may be a problem if you have them in an area where they can over heat.


Steve