Quote:
Originally Posted by funola
These Ebay LED's have built in resistors? Did you see this in the Questions box:
"Q: what size resistor for 12 v
A: Sorry, we don't supply resistors for this high power leds. "
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The electrical specs are listed, so you should be able to see that the answer is "No."
Forward voltage: 3V min, 3.4V typ, 3.8V max
Forward current: 100mA max.
From this, you can compute the needed resistor.