UPS By Sagar P Dalvi Simple and Easy to Understand
UNINTERRUPTIBLE POWER SUPPLY
An uninterruptible power supply (UPS) is a device thatallows your computer to keep running for at least a short
time when the primary power source is lost.
It also provides protection from power surges. A UPS
contains a battery that "kicks in" when the device senses
a loss of power from the primary source.
If you are using the computer when the UPS notifies
you of the power loss, you have time to save any data
you are working on and exit gracefully before the
secondary power source (the battery) runs out.
When all power runs out, any data in your computer's
random access memory (RAM) is erased.
When power surges occur, a UPS intercepts the surge
so that it doesn't damage your computer.
UNINTERRUPTIBLE POWER SUPPLY
An Uninterruptible Power Supply (UPS) contains an
internal rechargeable battery that gets charged from the
powerline then gets used to generate line power to the
load when the powerline fails. To accomplish thata, they
also contain an inverter, an electronic device capable of
generating 110/220v AC from battery-level DC voltage.
There are different types of UPS depending on how and
when the power generation occures, and how precisely
sine wave-shaped AC voltage they produce. Powerline
AC voltage is supposed to be a sine-wave, and it mostly
is. UPS-generated AC is usually a lot less sine-shaped
and some devices care more about that then others.
Generally, computer supplies couldn't care less, so
cheap UPS-es don't bother much with that.
HOW USP WORK
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