Re: [m0n0wall] POWER RE: [m0n0wall] PIX vs m0n0wall testing -- requesting input (was: Re: [m0n0wall] Re: Re: Re: to Wrap or to Soekris that is my question? What about VIA?)

From:	Manuel Kasper <mk at neon1 dot net>
To:	"C. Falconer" <cfalconer at avonside dot school dot nz>
Cc:	m0n0wall at lists dot m0n0 dot ch
Subject:	Re: [m0n0wall] POWER RE: [m0n0wall] PIX vs m0n0wall testing -- requesting input (was: Re: [m0n0wall] Re: Re: Re: to Wrap or to Soekris that is my question? What about VIA?)
Date:	Tue, 21 Dec 2004 20:24:10 +0100

On 22.12.2004 07:01 +1300, C. Falconer wrote:

> I've used a clamp meter to measure the actual power draw on some
> machines.
> 
> Celeron 300 running .70 A (.34 A was CRT) leaving 0.36 for machine.
> Celeron 1700 running .65 A (.28 A was CRT) leaving 0.37 A for
> machine Dell P3 700 laptop 0.14 A while charging battery and 0.10 A
> later.
> 
> For 235 Volts here in New Zealand that works out at
> Celeron 300		165 Watts or 84.6 Watts for the machine
> Celeron 1700	153 Watts or 86.9 Watts for the machine
> Laptop		32.9 Watts charging or 23.5 Watts not charging

Don't forget the phase angle between voltage and current - the real
power draw may be lower. Unfortunately effective AC power into
reactive loads can only be measured accurately with special power
meters...

> Now - I don't have a soekris or wrap board to test... But if anyone
> in Christchurch New Zealand does then give me an email off list.

It's been a while, but if it helps anyone - my WRAP.1A beta board was
once measured at 300 mA busy (booting) and 210 mA idle @ 12 VDC (with
one NIC connected, IIRC).

- Manuel