yes, that is right
_____________________ _________________
---| 120VAC in 12VDC out |(-)----------------------(-)| 12VDC in ATX PS |
---|_____________________|(+)---(+)\_______/(-)----(+)|_________________|
| |
|Multi|
|Meter|
|_____|
hopefully this helps.
Bryan
On Fri, 28 Feb 2003, 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: 
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> > ICQ: 42506676 (unreliable)
> >
> >
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