potential offering

NW Mailing List nw-mailing-list at nwhs.org
Tue Jan 24 17:05:25 EST 2023

Thanks for your input, it is always appreciated.  Yes, LEDs are certainly
the way to go.  They are readily available in 0402 packages with 0.5mm
dimension.  Just got myself a 40X microscope so I can have a chance at
working with such tiny beasts.

On Tue, Jan 24, 2023 at 12:37 PM NW Mailing List <nw-mailing-list at nwhs.org>

> Comrade Cochranov, Excellency :
> Do you propose to light these miniature signals with LED's or
> Grain-of-Wheat incandescent lamps?
> If you are open to suggestions, I would suggest the LED's.  They are very
> easy to work with, need to be fed with only one DC voltage, and are usually
> rated for a 50,000 hour burn life.  I have some LED's which have burned
> constantly, 24/7, for ten years.
> If you power LED's with one of these modern electronic power supplies
> (available on Ebay,) the supplies come with a tiny trimmer pot
> (potentiometer,) turned with a tiny screwdriver, by which the output
> voltage can be adjusted upward or downward by 10% or so.
> I love LED's.  I changed out the incandescent lamps in all my collection
> for LED's:  lanterns, indicators of various types, gauge lights, and even
> signals in the back yard.  The only thing I have not converted to LED's is
> the big 3-arm Searchlight signal in the back yard, and the problem there is
> the chromatics of the light:  white LED's look ghoulish behind colored
> glass because the light spectrum emitted by LED's is very much different
> from the light spectrum emitted by a heated, glowing incandescent lamp
> filament.
> But what do I know...?  I am only a hack dabbler, and not an electrical
> engineer.
> Good luck with your project.  And BTW, you can now get miniature LED's,
> probably something like 0.070 inch in size.  But talk to an electrical
> engineer, as navigating the on-line catalogues of the Mouser or DigiKey
> supply houses can be a very intimidating experience.
> -- abram burnett,
>  Department of Turnips, Bureau of Agitation and Propaganda
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