How Really Power Surges Destroy Your Computer and How to Avoid
Power surge are one of the most feared incident on electronic
devices. Same as computer, they are really susceptible to power
surges. Even though surges usually last only milliseconds (and
are somewhat filtered by the transformer in the power supply),
that high voltage can exceed the withstand voltage of the
insulating layers inside the integrated circuit chips and burned
everything inside your computer. The power delivered to your
electronics devices and computer is stable and constant, in
theory of course. In real life, it doesn't work that way. Often
power surge occurs when the normal flow of electricity is
interrupted, and then started again, or there was an occurrence
that something sends excess electrical energy into the system.
Any number of events, from lightning strikes to power failures,
can cause power surges. Even your own electrical devices and
computer can cause them. Refrigerators and air conditioners, for
example, have motors that turn on and off, diverting electricity
to and from other appliances and producing low-level power
surges. On computer, internal peripheral can cause small surges
that can reduced your computer lifespan or even destroy it
completely.
On computer a switching power supply is designed to convert AC
into various DC voltages. The internal transformers on power
supply that do this, the capacitors to bridge over dips in the
line power, all these are rated to handle a certain amount of
energy at any given time. If you go outside of range of that
certain amount, you overload the parts. Maybe marginal parts
fail and die. Maybe they let through more energy than they
should. In some cases, maybe things catch on fire. Like things
you saw on fried chips due to extreme overclock. Cheaper Power
Supply Units will be using cheaper components - the upshot of
this is the components have weaker tolerances, and don't handle
going outside their tolerances as gracefully.
To prevent it you need a good UPS (Uninterruptible Power Supply)
to protect your computer and another electronic appliance.
However no UPS can withstand power of nature. Even a good UPS
cannot tolerate extreme power of lighting. During storm or rain
situation you might want to consider turn off you computer and
unplug it. Also unplug phone lines and another line like coaxial
cables that are being used for cable TV and broadband
connection, since they are susceptible to lighting strike. Power
surges caused by lighting are seldom to happen though there are
possibilities.
On computer you will face another problem. Internal surges that
can't be prevent from external UPS. This caused simply by turn
it on and off your computer. So every time you turn on and off
your computer, you actually decreased life span of your computer
and adding possibility to destroy the component completely. And
there is no way to avoid this matter for now. Since there is no
data how it will affect your computer. I suggest that you
scheduled your computer to be use as efficient as possible.--FA
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