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Subject: RE: Running from external supply (round 2)
From: VanBaren, Gerald (AGRE) (Gerald.VanBaren_at_smiths-aerospace.com)
Date: 2004-11-02


> -----Original Message-----
> From: rockbox-bounces_at_cool.haxx.se
> [mailto:rockbox-bounces_at_cool.haxx.se] On Behalf Of Richard Klein
> Sent: Tuesday, November 02, 2004 12:51 PM
> To: Rockbox development
> Subject: Re: Running from external supply (round 2)
>
> BlueChip wrote:
> >
> > I have read "do not use Alkali batteries to power a Jukebox
> - but have
> > no idea what would actually happen if you did.
>
> Just my guess, but they probably say that so they won't be
> liable for damages if someone plugs in their Jukebox, which
> will then attempt to recharge the alkalines, possibly causing
> them to leak acid or explode.
>
> -- Rich

New alkalines can run 1.7v which would result in a power rail of 6.8v.
The electronics are (generally) rated at 5.0v +/- 10% or 20%. The
result is that the batteries are stressing the electronics (the chips
will draw excess current) until the electronics can drag the battery
voltage down to a more comfortable level (somewhere below 6v).
Sometimes the electronics lose the fight and the smoke escapes. The
smoke isn't a big deal, but that is an indication that the genie escaped
too, and now there is nobody to run the box for you :-(.

gvb

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