Re: Self Built Desktop PC

Tech-Archive recommends: Fix windows errors by optimizing your registry

"95% of most PC problem occur on bad power circuits" when the
human does not first learn why failure occurs. For example, a
computer grade UPS in battery backup mode outputs a modified
120 volt sine wave. Now we review the numbers. That 'sine
wave' could be two 200 volt square waves with up to a 270 volt
spike between those square waves. IOW the 'dirtiest power' is
delivered by the UPS. Is that UPS destructive to computers?
Of course not.

Computer must have a power supply that provides protection
from 'dirty power'. But when selling a power supply at
significantly less than $65, essential functions are
forgotten. Functions that make dirty power irrelevant.
Functions that are essential to a reliable computer.
Functions as even required in Intel specs.

How to identify inferior power supplies. One - they sell at
lower prices. This (obviously) does not say all $70 supplies
include essential functions. But a $40 power supply would be
missing these essential functions.

Two- supply manufacturer forgets to provides a long list of
numerical specs. Essential to forgetting to include those
essential functions: don't provide those specs. Then those
with real technical knowledge cannot 'blow the whistle'. A
long list of numerical specs means the manufacturer has stated
those essential functions are included. Ten lines of
specifications only means the manufacturer is insulting your
intelligence. No numbers means he never really intended to
provide a minimally acceptable supply.

Forget the UPS or plug-in surge protector that doesn't even
claim to provide protection from typically destructive
transients. Any protection that works at the computer would
already be inside the power supply. Protection that can be
overwhelmed if the building does not have a 'whole house
protector on AC mains and other service entrance protection.
Essential is the building's earthing that meets or exceeds
post 1990 NEC requirements. Just more facts that useless,
undersized, and grossly overpriced plug-in protector
manufacturers hope you never learn.

Instead get a minimally acceptable power supply. Consider
effect transient protection at the utility service entrances.
Don't fall for the myths promoted by the electrically naive
who assume "surge protector = surge protection". Protector
and protection are not even the same items. But a good power
supply contains essential functions even demanded by Intel.

Yves Leclerc wrote:
> You will need to add:
> ...
> 3) Power Supply -- any power supplies below 400 watts are to be avoided.
> 400 watt PS will give you room to expand.
> ...
> 5) Surge protector or UPS -- 95% of most PC problem occur on bad
> power circuits.
.

Relevant Pages

  • Re: Lightning - funny how were not seeing him any more
    ... Now for a typical plug-in UPS. ... a problem made completely irrelevant by 'protection' already ... inside a minimally acceptable computer power supply. ... computer to some of the 'dirtiest' electricity. ...
    (microsoft.public.windowsxp.hardware)
  • Re: House Power Failures and Mac
    ... What happens is that power comes in, ... J J O'Shea describes a UPS that typically costs $500. ... because I wanted the protection that true UPS delivers and SPS does not. ... A UPS that does provide surge protection is the building wide ...
    (comp.sys.mac.apps)
  • Re: "Mysterious" system crashes
    ... did when I took electronics and worked in that trade before getting ... made to appear as a capacitive load and the power company may give you ... little to the home-computer UPS buyer other than when he's trying to ... and offer some protection for less than $600. ...
    (comp.os.vms)
  • Re: UPS recommendations?
    ... happen to be working at the computer when a surge hits? ... One power supply function: provide ... What does a plug-in UPS do? ... Typically has no hardware protection functions. ...
    (alt.sys.pc-clone.dell)
  • Re: Self Built Desktop PC
    ... Head over to American Power Conversion or Powerware. ... UPS makers and will give getter 'facts' on why to use UPS or surge ... > Computer must have a power supply that provides protection ... > long list of numerical specs means the manufacturer has stated ...
    (microsoft.public.windowsxp.hardware)