From: Marko Mäkelä (marko.makela_at_hut.fi)
Date: 2006-10-06 12:19:25
On Fri, Oct 06, 2006 at 10:41:02AM +0200, Anders Carlsson wrote:
> On the other hand, if one single type of chip is to blame, the breadbox
> Commodore 64 should also be very power hungry, at least in the 50W range
> while it usually is rated 15-25W on the underside if I remember correctly.
It might be a good idea to measure the actual power consumption from the
mains line. I believe that the power consumption of NMOS and other
non-CMOS chips is rather constant. You might get some added consumption
from the analog video or audio circuits, tape and disk drive motors, and
I/O ports that are sourcing or sinking current.
Some types of cheap measurement devices are unsuitable for measuring
inductive or capacitive loads, because they measure current and voltage
separately. If the meter shows sensible rates for motors and fluorescent
tubes, it should be fine. I tried and returned the E-Tech PM300 energy meter
<http://www.epanorama.net/phpBB2/viewtopic.php?p=7794> about a year ago.
My friend suggested that the meter could be accurate for slightly reactive
loads greater than 60 W.
Marko
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