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RE: Finaly a cheap possible wearable solution?

Yes, Ammeters are connected in series... voltmeters
are connected in parallel.

 --- Jeremy <> wrote: > cool
info.. so you are wiring the meter in series
> on the positive line between the converter and the
> power supply?
> 
> -----Original Message-----
> From: Bryan Hurley [mailto:]
> Sent: Friday, February 28, 2003 10:43 AM
> To: 
> Subject: Re: Finaly a cheap possible wearable
> solution?
> 
> 
> 
> ok, this is how to measure power consumption
> 
> first, get the 12v input atx power supply for the
> eden, the nice little
> one that is similiar to the ones in the cubid case.
> 
> now you have 12v in.. so you only have one voltage..
> this is good.
> 
> then you have to hack the power cable from the AC/DC
> converter that came
> with the power supply.
> 
> keep the ground going directly from the converter to
> the power supply.
> then you have to wire in a multimeter to the
> positive wire.
> Change the multimeter to read DC amperage, on a
> fluke you have two places
> to put the positive plug, take out from normal one
> and put in the 10A
> plug.. hopefully whatever multimeter you have, you
> can set the positive
> plug to be unfused, or have a high current
> allowance.
> Then wire the positive towards the AC/DC converter,
> then wire the ground
> to the positive part of the plug that goes into the
> 12v in on the power
> supply.
> 
> now when you run the system, your multimeter should
> give a reading on how
> much current is being used, amperage... then
> multiply the 12v that you
> know you are supplying from the AC/DC times the
> amperage that the
> multimeter says and you get the wattage that the
> system is using.
> 
> make sure to boot up the system and use it and take
> down measurements all
> the time.. this way you can see the max power usage
> which is often during
> bootup and also see normal usages...
> 
> figured everyone might not know how to do this so I
> would post it.
> 
> <disclaimer>
> The above explanation of how to measure voltage is
> for educational use
> only, any usage of the above design is used at the
> user's own risk. there
> are no warranties expressed or implied.
> </disclaimer>
> 
> enjoy,
> Bryan
> 
> 
> On Thu, 27 Feb 2003, ben wrote:
> 
> > Has anyone been able to find out power consumption
> stats for the EPIA M
> > board?  The EPIA ME6000 has a slightly beefier
> (but still fanless)
> > 600mdz Eden processor.  It also has a supposedly
> better 3D processor,
> > and an on-board DVD decoder.
> >
> > I don't technically need all of that stuff in my
> system, but it would be
> > nice to have it, if the tradeoff isn't too bad. 
> My guess would be that
> > the 600mhz Eden wouldn't drain much more power
> than the 533, but I worry
> > about the extra stuff on the M board sucking up
> juice.  Even a few extra
> > watts could have a noticeable effect on battery
> power.
> >
> > -ben
> >
> > --
> > http: slightlymad.net
> > smtp: 
> > AIM: bsarsgard
> > ICQ: 42506676 (unreliable)
> >
> >
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