[Elecraft] K1 LCD Illumination mod

[Tom Hammond NØSS]

John:

> > If you placed several of them in series, you could add up to about 8-10
> > LEDs with NO increase in current, and you'd not have to dissipate nearly
> > as much heat in the dropping resistor.
>
>Actually, that had crossed my mind.  I've never been all that comfortable
>with bunches of LEDs in series, but you use the same current, it's just that
>you spend it generating light rather than heat.

And it's essentially NO-HEAT light since there's no filament.

>Depending on the color, I think you are talking more like 4-6 or so, you
>will want some sort of current limiting resistor I think.  But between the
>number of LEDs and the resistor, you can kind of choose how much current you
>want to spend, tho it will probably be between 10 and 20 mils.  Mechanically
>arranging a half-dozen LEDs could be a bit of a challenge, though.

"Challenge" may well be an understatement... heheh!

Tom  N0SS