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 |