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zxxn · 06-07-2007

Does your 3W LED bulb require load resistor?

Maybe my LED bulb is more than 3w.

I ordered same type LED bulbs for front turn signal lights.

When I get them, I will measure resistence. 12V 3W bulb should be 48ohm

and 12V 21W bulb should be 8.25ohm...

I will calculate wattage of the bulb based on resistence.

I think the reason my LED bulb is brighter than conventional LED bulb is

its chip LED elements have wide angle light beam(almost 180 degree)

and the beam pattern uses turn signal light reflector well....

06-07-2007	#5 (permalink)
zxxn SLK World Member Join Date: Jan 2007 Posts: 54 Country: Thanks: 0 Thanked 0 Times in 0 Posts	Does your 3W LED bulb require load resistor? Maybe my LED bulb is more than 3w. I ordered same type LED bulbs for front turn signal lights. When I get them, I will measure resistence. 12V 3W bulb should be 48ohm and 12V 21W bulb should be 8.25ohm... I will calculate wattage of the bulb based on resistence. I think the reason my LED bulb is brighter than conventional LED bulb is its chip LED elements have wide angle light beam(almost 180 degree) and the beam pattern uses turn signal light reflector well....