- #1
John1397
- 190
- 18
I am using a 3.3 volt led rated 25 ma powered with 12 volts and have 1000 ohm resistor in between. Ohms law says amps = ohms / volts so 12 / 1000 = 12 ma so is this all the LED and resistor combined will draw? As I know the led can only handle 25 ma, but if the led where using this much current you would need less ohms, but would you still need to add the resistor into the equation?
John
John