Allo, i have a simple question regarding LEDS, im a complete novice to electronics .
What i want to do, is run 2 red LED's from a 12v power supply,
but have the bulbs on thier own boards ie, board for power jack, running two seperate boards holding one bulb each
both the led's are rated 3v thats all info i have, it was mentioned i need resisitor on board to restrict power etc etc. thats where my problem starts, what resistor do i need? or how do i work that out if the only info of the bulb i have is 3v, and no 'ma' info?
if its easier i can use 2 12v bulbs, but still id need a resistor on board, again thats where i get lost
hope someone can help, coz as simple as it is or sounds, its driving me nutts lol
thanks
What i want to do, is run 2 red LED's from a 12v power supply,
but have the bulbs on thier own boards ie, board for power jack, running two seperate boards holding one bulb each
both the led's are rated 3v thats all info i have, it was mentioned i need resisitor on board to restrict power etc etc. thats where my problem starts, what resistor do i need? or how do i work that out if the only info of the bulb i have is 3v, and no 'ma' info?
if its easier i can use 2 12v bulbs, but still id need a resistor on board, again thats where i get lost
hope someone can help, coz as simple as it is or sounds, its driving me nutts lol
thanks