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RE: Finaly a cheap possible wearable solution?

"It might not hurt, though, to use a 13.2v or 14.4v battery, and run it
through a 12v regulator." - exactly what I was thinking.

-----Original Message-----
From: ben [mailto:]
Sent: Monday, February 24, 2003 10:47 AM
To: ; Jeremy
Subject: Re: Finaly a cheap possible wearable solution?

It may not be neccesary to regulate the voltage from the batteries, I'm
still
not sure.  Generally, 12v is roughly the same thing as 11v or 13v, so the
psu
will PROBABLY accept it (Bryan seems to agree with this), but we can't
really
know until somebody tries it.

It might not hurt, though, to use a 13.2v or 14.4v battery, and run it
through a 12v regulator.  This would probably allow you to discharge
further,
and still meet the 12v input of the psu.

My first step, once I have a working system, will probably be to hook a 12v
4AH NiMH battery (since I've already got the cells) directly into the psu,
and measure my uptime while performing something intensive, like a kernel
recompile.  If it's not satisfactory, I'll experiment with regulation and/or
other batteries.

-ben

On Monday 24 February 2003 14:07, Jeremy wrote:
> I was thinking about this this morning and I was
> think that I would have to build some sort of voltage
> "regulator", but I am not expert on batteries. even with
> the 12v power supply... (which I assume is expecting 12
> volts dc input) I would have to regulate the power from
> the bats. I can't remember the information from my basic
> electrical course.
>
> I am going to do the same thing as you.. I am going to
> start puchasing my parts run the puppy off AC till I get
> linux working. I will probably get it all together in a
> project box of some sort then worry about DC power.
>
> I will post my parts list after work tonight.

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