[SunRescue] An intriguing idea...

[Eric Ozrelic]

A really cool idea would be to put a small UPS in a 411 or 811 case.
That way you could use it on other machines, and it would be the same
footprint as a lunchbox type machine. You could also pack more juice
into it.

Regards,

Eric Ozrelic
aka ProjektSUN


----- Original Message -----
From: "Mike Hebel" <druaga at pmail.net>
To: <rescue at sunhelp.org>
Sent: Tuesday, April 11, 2000 11:42 AM
Subject: RE: [SunRescue] An intriguing idea...


> Tim,
>
> Yes I was referring to IPC/IPX/Classic style and like I said - it was just
> an idea.  Although you do have a good point about the thermal properties
of
> the case - it gets quite warm after a long period of use.
>
> What I actually was looking for was something that would handle small
> brownouts and moving the system without having to move _all_ the systems
on
> the UPS or having to shut it down to move it from one outlet to the next -
5
> feet away.
>
> I've actually seen specs for several 24V batteries that would do just fine
> for this sort of thing although you would have to completely cut out the
> floppy bay to get the height. I don't think a 12V with a switching p/s
would
> fit in that case anyway.
>
> On the subject of another disk - could you replace the floppy with another
> drive and use a power "Y" to run both drives?  Would the supply support
that
> kind of load on the single feed or not?  (Maybe I'll try this tonight.)
>
> I'm a hardware hacker at heart. ;-)
>
> Mike
>
> -----Original Message-----
> From: rescue-admin at sunhelp.org [mailto:rescue-admin at sunhelp.org]On
> Behalf Of Tim
> Sent: Tuesday, April 11, 2000 13:09
> To: rescue at sunhelp.org
> Subject: Re: [SunRescue] An intriguing idea...
>
>
> > Mike Hebel wrote:
> >
> > Here's an odd idea:   Using a voltage regulator and a 12V gel-cell or
> > L-ion battery could you replace the floppy on cake-box systems to give
> > them some power-redundancy?  The only thing I can see that would cause
> > a problem is the POK signal but I'm sure that could be simulated.  (I
> > know an external UPS would be easier but I like to do odd hardware
> > hacks.)
> >
> > I'm sorry but I get these ideas from time to time and I have to share
> > them otherwise I don't know if they're worth anything when I lose them
> > again.
> >
> > Mike Hebel
> by cake box do you mean IPC style?
> Well..., I don't think you would get usable life out of it, those
> machines aren't exactly green, and if it is running one of the older
> disks, those things are power black holes.  If you had a software
> interface, so it immediately did a clean shutdown, it might work, but I
> doubt it would be worth the hassle, what do they need? +- 12, +5?
> that's either a 24 volt batery and 3 regulators, or a twelve volt
> battery and a switching supply, either of which would add heat to an
> already thermally challenged case.
>
> Just my opinion, but you'd be better off getting another case, or maybe
> an 811 case, and building a matching external power supply.  You could
> actually take the supply out of the computer, whic would help with heat,
> and build the supply and battery back up in a separate, matching,
> stackable box.  You probably could get another disk in the computer
> also.
>
> Tim
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