[Amps] CTI follow up - miscellaneous ramblings

[Steve Thompson]

On Wednesday 26 June 2002 15:16, Radio WC6W wrote:
> On Wed, 26 Jun 2002 05:39:05 -0700 Richard <2@mail.vcnet.com> writes:
> > >Expanding on a suggestion made to me off list, how about a string of
>
> 150
>
> > >LEDs to get 300odd V for a screen supply. That could be quite pretty,
>
> and
>
> > >give visual indication of loading too.
> >
> > *  Super-Excellent idea, Steve.  A showy visual display just might  win
> >
> > over the "real radios glow in the dark" gang.   Hmmmmm, lets see, with
> > high-intensity LEDs, it should be possible to make a 800-LED array
> > screen-shunt regulator for an 8170 that could probably be seen from
> > 2-miles away.  Would this be impressive or what?  And if this
>
> screen-reg.
>
> > was mounted on top of the tower -- totally kick-butt awesome.
> > .
> > cheerz
> >
> > -  R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
> > www.vcnet.com/measures.
> > end
>
> Hi Rich & Steve,
>    I would hope that before anyone starts wiring all those LED's, one
> would check the LED I/V curve and discover that a "regulator" of this
> design would exhibit something in the neighborhood of 20%... wanderance.
OK, so we need several chains in parallel to carry enough current to swamp 
the tube screen variations. Think of the saving on the shack lighting bill :-)

Steve