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Re: power sources

From: Charles J Knight <>
Date: Mon, 5 Mar 2001 23:20:10 -0600

> > book with plans for creating solar cells based on copper instead 
> 
> I am doubtful that either of the above will produce enough juice to 
> charge the types of batteries used in yer typical wearable.

It might be able to extend the life of the battery, though...going from
4 hours to 5 might be worth it under certain circumstances.

It also depends on what a typical wearable requires.  If I built a 
wearable around my Helio (handheld PDA capable of running LINUX) 
its power requirements are miniscule.

Encasing the outside of a belt pack with solar cells would generate
more than enough power, just walking around, to keep the AAA
batteries topped off.

> adapters for laptops are usually around 15-18 volts and 2-3 AMPS! 

That's for laptops -- not necessarily required for a wearable.  We've
had this discussion before.

> java I'd be quite impressed. Maybe this would work for a 
> microcontroller 
> based wearable drawing 20mA, but doubtful that it would power a 
> pentium.

So ditch the Pentium.  :-)

> BTW crackpot whackos are welcome here. I'm one of them and damn 
> proud
> of it. Who wants to be normal?

Strangely enough, in this group I'm fairly normal.  In the world, 
however...  :-)

     -- Chuck Knight

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