[rescue] SGI Challenge L systems available in Denver

Charles Shannon Hendrix shannon at widomaker.com
Sat Sep 18 11:19:00 CDT 2004

Fri, 17 Sep 2004 @ 10:39 -0400, velociraptor said:

> There getting quite popular on motorcycles which generally 
> have issues with their electrical systems and the load placed 
> upon them.  Having white LED "headlight" arrays for a 
> reasonable cost would be very helpful.

LED lights don't have enough penetration to be used as headlines.

Even with focusing lenses, they still don't really do the job that an
incandescent does.

Of course, LEDs are improving continuously.

> In the household, though, a lot of the energy efficiency 
> gains of switching to LEDs (and in using other DC devices)
>  is lost in the inefficiency of the AC-to-DC converters.

Keep in mind that things like wall-warts are notoriously inefficient.
Efficient units cost more, and most device makers are looking to cut
corners for the mass market.

Other converters aren't quite as bad.

What kind of solution would you use if you wanted to have a significant
DC source system in a house?

Would it be more efficient to distribute something like 48VDC through a
room/house, than to just use local conversion?

shannon "AT" widomaker.com -- ["Tara is grass, and behold how Troy lieth
low--And even the English, perchance their hour will come!"]

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