Hi there folks,
I was recently given about 50 10mm dual(Red/Green) colour LED's as the control boards they came off had failed and were going to be discarded.
Being a person that doesn't like stuff seeing stuff like this go to waste, I said I'd like the LED's, for some future project.
Now, here is the problem, these LED's have 3 wires on them, Red, Black and Yellow, I tried a 1.5V AAA cell on one of them, between the red and black wires and got a faint red glow from the LED, so far, so good.
I connected the yellow(+ve) and black wires to the battery and....nothing.
Is the voltage I'm using too low or too high?
I can only find data for 5mm LED's on the Net and it states Vforward should be about 1.4Vdc.