Hi Folks,
I have a cruddy bike torch which came with a Luxeon LED in it. It's not very bright, so I went by the luxeon star website in search for a better "globe".
I found one that sounds much better (lots more lumens), so I brought it. But then in a panic I emailed the folks there to confirm it would be a straight swap, and they said no because of the forward voltage.
They are both rated at the same current draw (700ma) but one is rated at 3.9Vf and the other at 9.45Vf
My question is, what does this mean, does it need more volts ? My battery delivers 11v @ 2200mAH ... so could it be as simple as swapping a resistor to allow more power to drive the brighter LED ?
Tim.
I have a cruddy bike torch which came with a Luxeon LED in it. It's not very bright, so I went by the luxeon star website in search for a better "globe".
I found one that sounds much better (lots more lumens), so I brought it. But then in a panic I emailed the folks there to confirm it would be a straight swap, and they said no because of the forward voltage.
They are both rated at the same current draw (700ma) but one is rated at 3.9Vf and the other at 9.45Vf
My question is, what does this mean, does it need more volts ? My battery delivers 11v @ 2200mAH ... so could it be as simple as swapping a resistor to allow more power to drive the brighter LED ?
Tim.