[Gllug] Why we still like CRTs

[Chris Bell]

On Thu 19 Nov, John Winters wrote:
> 
> On Thu, 19 Nov 2009 15:31:28 +0100 (BST), Chris Bell
> <chrisbell at 3966.ukfsn.org> wrote:
> [snip]
> >    Just the back light normally consumes more power than a CRT,
> 
> You what?!  Not on any CRT or LCD screen that I've come across.  Try
> actually measuring the current being consumed by the two types of display. 
> I've known CRTs consume up to 750W (yes, seriously - although this was
> quite a while ago).  LCDs tend to be more in the 20W-30W range.

   Standard LCD monitor consumption does not vary with picture content. I
have just looked at the spec for a high quality 19inch CRT which claims
145watts peak (which would be a peak white screen), no average specified,
3watts standby.
   Modern CRTs do not have iron core transformers, there is efficient power
recovery, and the 20inch monitor in front of me runs cool. I would expect a
10 year average life. I still choose to use CRT monitors, despite having
tried using an LCD monitor at home.
   I have felt the heat from many LCD monitors, they do not all run cool. I
have also had a very close look at the LED backlit LCD TV/monitors now
available, they are impressive but expensive. Unfortunately the
demonstration programmes were 50% live and definitely not HD, only about 50%
"HD" recording.


-- 
Chris Bell www.chrisbell.org.uk (was www.overview.demon.co.uk)
Microsoft sells you Windows ... Linux gives you the whole house.

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