Re: [uCsimm] Power supply for uCsimm

From: David Smead (smead@amplepower.com)
Date: Mon May 08 2000 - 13:18:23 EDT


We measured about 140 mA draw with ethernet banging away. Over a 24 hour
period, that's 3.4 Amp-hours.

Sincerely,

David Smead
http://www.amplepower.com.
http://www.ampletech.com.

On Mon, 8 May 2000, Serge Egelman wrote:

>
> What would the best way of making a battery operated power supply be? Using a DC/DC
> coneverter? How long might this run on a few (i.e. 4) AA batteries (what's the
> current draw of the whole thing? I haven't gotten mine yet, so I can't test it with
> a multimeter)?
>
>
>
> serge
>
>
>
>
> Stuart Hughes wrote:
>
> > erik@calderasystems.com wrote:
> > >
> > > Before I plug this thing in, I want to know beyond the shadow of a doubt that
> > > pumping 4.5v into this is okay. This may seem obvious to seasoned embedded
> > > hackers, but some of us are just now starting. When I see one set of docs say
> > > this runs at 3.3v and the board says 4-6v, and there is no further explanation
> > > offered in documentation, the main web site, FAQs, etc., I get worried (why
> > > isn't that clearly documented? I can't be the only person who's ever wondered
> > > about this).
> >
> > Hi Erik,
> >
> > As you will have seen by now from the other answers, this will work
> > fine. I have a uCsimm and I use a 500ma supply, I have tried it at 4.5
> > and 6 volts, both work.
> >
> > Regards, Stuart Hughes
> > Zentropix - a Lineo Company
> > This message resent by the ucsimm@uclinux.com list server http://www.uClinux.com/
>
> This message resent by the ucsimm@uclinux.com list server http://www.uClinux.com/
>

This message resent by the ucsimm@uclinux.com list server http://www.uClinux.com/



This archive was generated by hypermail 2b30 : Sun Apr 07 2002 - 00:01:36 EST