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Posted by George Graves on 04/12/06 17:54
In article <0001HW.C0620DEB000A743DF02B4530@newsgroups.bellsouth.net>,
Tim Murray <no-spam@thankyou.com> wrote:
> On Apr 11, 2006, zara wrote:
> >> He says he's technical, yet ANYBODY who has even a modicum of
> >> understanding about simple physics woud realize that its IMPOSSIBLE to
> >> charge a battery up to a 50 hour cycle time in three minutes unless the
> >> player drew nanoAmps (10 to the - 15) of current - I.E. not enough to
> >> even power a pair of headphones, much less a flash memory.
> >
> >
> > Not only is it possible, but done on an everyday basis, buy the military.
>
> By technology developed on Macs at Interlochen.
You guys are getting too nit-pickey in your old age, I obviously meant
in a CONSUMER product not a military product. To charge - say- a set of
rechargeable double-A cells up to 50-hour life in three minutes so that
they could power a mini-disk or MP3 player, one would literally have to
use refrigeration on the battery (ies) and use a high-voltage/ high
current charger and active electronics to monitor/control the charge.
And good luck getting UL approval.
With standard batteries/chargers you'd have to rely on the player itself
being very low current device. I have an older Sharp minidisc player
which uses ONE AA cell and it can get six hours out of a single alkaline
and about 4-4.5 hours out of a single Ni-Mh Double A. which I consider
remarkable given that the player has a motorized transport spinning a
disc the whole time it's being used. But to get 50 hours of battery life
out of the same type of device. One would have to lower it's current
draw by an entire order of magnitude while recharging the batteries with
a high voltage charger without having them blow-up or burn-down the
house.
--
George Graves
The health of our society is a direct result of the men
and women we choose to admire.
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