| Re: Busch & Mueller "Big Bang"---the ultimate bike light?
Frank wrote:
>
> Chalo wrote:
> >
> > I've made my own LED lights using 3 x
> > NiMH cells in the same way-- no drive electronics, no driver losses,
> > no additional packaging or extraneous points of failure. (And no low
> > beam, of course.)
>
> Chalo, what LED did you use?
I used Luxeon I emitters and Fraen collimating optics. I coupled them
well to efficient heatsinks and drove them at currents upwards of
500mA. This was when the Luxeon III was new and pricey, so I took the
cheap option. Next time, I'll use Luxeon K2 mounted on Star PCBs.
Those are more power efficient, brighter, cheaper, and easier to mount
than the ones I used for my lights.
See my reply to Will for more information.
Chalo
|