On 09/12/15 10:13, Martin Brown wrote:
On 09/12/2015 09:51, wrote:
On Tuesday, 8 December 2015 14:47:39 UTC, Adrian wrote:
On Tue, 08 Dec 2015 06:35:42 -0800, dr.s.lartius wrote:
A neighbour has a new-this-year UK-assembled generic Windows 7 PC,
and a
decade-old flat-screen non-CRT Philips monitor from Denmark.
Nocturnally, these are turned off by closing Windows and by pressing
the
little button on the lower front of the monitor.
What power, in watts, is each of these two devices each likely to be
drawing during the night?
If he's closing Windows, then he's switching the PC off. There'll be a
small draw, but it really will be absolutely minimal.
(1) Initial false assumption.
(2) It is that draw which I wish to know; I do not want its
significance evaluated.
Have a google for the monitor - the 8yo 24" Samsung flat on my desk is
reputedly 0.5w on standby.
Call it a watt for the pair. So 1,000hrs from 1kWh or, at 15p/kWh, about
2.5 days per penny.
(3) I asked "during the night" - but you have quoted the daytime rate.
Can anyone give actual answers (and no more) to the actual question?
No. The question as posed is impossible to answer since it depends
critically on the exact model of PSU in the generic PC and potentially
on certain BIOS settings (ie keeping the memory active in suspend mode).
Likewise the model number and version could be used to find the LCD
display manufacturers claimed power consumption in standby.
The only way to find out for sure is to *measure* it on the actual kit.
And in fact measuring very very low duty cycle current into very low
power switched mode PSUs, is in itself a highly suspect enterprise.
(The modern tendency is to have two switched mode PSUS - one that runs
the 'standby' power unit, and which switches on the main switched mode
PSU when the start button is pressed).
--
the biggest threat to humanity comes from socialism, which has utterly
diverted our attention away from what really matters to our existential
survival, to indulging in navel gazing and faux moral investigations
into what the world ought to be, whilst we fail utterly to deal with
what it actually is.