Any suggestions, please?

[Michael Haney]

On Thu, Sep 9, 2010 at 10:30 PM, Li Li <lili_lilly at charter.net> wrote:
> Yeah-but it's still winter and cool in the southern hemisphere.  The
> predicted high for Friday at Sydney is only 20 degrees C and this is
> almost exactly the average for the date.  I don't know where Basil
> lives, but unless he's way up north around Darwin he doesn't know what
> humidity is.   I remember all of the populous places in Oz as being
> mighty dry, and that was nearly 40 years ago; I'm told it is worse now
> and last (southern) summer's fires attest to that.
>
> I've seen lots and lots of switching power supplies die from
> over-voltage, spikes and the like.  They can arc spectacularly.  Their
> whole method of working is very high voltages (albeit at small
> amperages) and high frequencies: this stresses the cheap components
> found in most consumer grade PSUs.  Add in the usual house dust that
> clogs them (anybody else notice that home PCs, even in the cleanest
> houses, are far dirtier than office machines?), a thunderstorm or some
> idiot hitting a power pole with a car causing an inductive spike and
> pow!
>
> Now I'm interested: I'll ask people at my former employer if they have
> any stats on PSU replacement frequencies, say in 100 V Japan and 250 V
> Oz for comparable equipment.
>

Which is why its almost always a good idea to connect your machine to
an UPS.  Some have power conditioners, which is helpful if you have
powerlines that carry a lot of noise that can muck with the
electronics.

-- 
Michael "TheZorch" Haney
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of morality by religion." ~ Arthur C. Clarke
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for it in the endeavor of science. " ~ Carl Sagan

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