smitty244
Newly Enlightened
Hi everyone, I just got a few TW0K stars that are going to be connected in parallel and I want to determine the exact Vf of each one so I can find the appropriate resistance for 3xNiMH batteries. I have a multimeter and know I need to connect the multimeter across the +ve and -ve areas of the LED but how can I supply a power source to do that without risking frying the LED? Right now I've got one lighting up by connecting it to a 3xAAA adapter from Radio Shack with some alkaline batteries very briefly as I know their resistance probably wouldn't allow too much current, but I'd like to know if there is a safer way. Thanks!