[mythtv-users] Re: Energy Usage of MythBoxes

[Niels Dybdahl]

> >Your typical 19 inch CRT monitor draws about 500 watts. They draw close
to
> >1000 watts at startup (mostly due to filiment startup current and the
> >degausing coil). Your newer lcd displays draw less than 150 watts so
there
> >is a huge savings energy wise. BTW your typical television draws about
the
> >same current as the same size crt monitor. Function wise they are nearly
> >identical so you would expect the currents to be about the same too.
>
> Where did you get those numbers from??? I have been in the repair business
for 40+
> yrs and have measured the power consumption of a lot of equipment.. Really
simple to
> do.. measure the current and multiply it by the supply voltage = power.

Actually the product should be integrated, which might result in a lower
value.
I have a power meter, which does that. It gives me a power consumption of
around 60 W with a "power factor" of around 0.55. So apparently the current
is not in phase with the voltage.
However most other power meters including most of those that calculate our
power bills do not measure power, but current, so actually the phase shift
or "power factor" does not count anyway. But if you use an electronic power
meter if might measure the actual power consumption which is lower than what
you pay for.
So my MythTV box uses 60 W, but I pay for 110 W.

Niels Dybdahl