Hi there Guy's:
I want to run a 3v Bright blue LED from a 3xAA battery pack = (4.5v).
The vf is 3.2v - 3.8v
forward current 30MA.
I know how to do the calculation but am a little unsure about which of the two vf voltages to use in the calculation!.
Would I use the (3.2v) the (3.8v) or a voltage in between.
By using the vf (3.2v) the resistor needed would be (47ohm) using the vf (3.8v) the resistor would be (27ohm)? any help would be very much appreciated.
I don't need another sleepless night HaHa.
Thanks in Advance
Tezza1
I want to run a 3v Bright blue LED from a 3xAA battery pack = (4.5v).
The vf is 3.2v - 3.8v
forward current 30MA.
I know how to do the calculation but am a little unsure about which of the two vf voltages to use in the calculation!.
Would I use the (3.2v) the (3.8v) or a voltage in between.
By using the vf (3.2v) the resistor needed would be (47ohm) using the vf (3.8v) the resistor would be (27ohm)? any help would be very much appreciated.
I don't need another sleepless night HaHa.
Thanks in Advance
Tezza1