Uninterruptible AC Power Supply

Power supply is generally referred to as a sourcesecond. There are several household in US that
of electrical power. It is a device or system thatare wired for high power devices and operate at
supplies electrical or other forms of an energy to240 VAC. The major benefit is that 240 VAC
an output load or group of loads and is known asneeds only half the current of 120 VAC for the
power supply unit or PSU. The electricity primarilysimilar power consumption which in turn curtails
flows in two ways, namely AC or alternatingresistive power losses in the wires that deliver
current and DC or direct current. They are in-factthe current.
a movement of electrons along the conductor.Why AC power supply is preferred over DC:
The only variation among AC and DC lies in theAlternating current posses the potential for large
direction, wherein the AC keeps the movingscale.
electrons in a switching manner, on the otherThey can be conveniently and cheaply produced
hand DC is in a steady single track.than DC potentials.
AC power supply is mainly used for long distanceDC is still the ideal choice in the areas where the
power transmission to different power companies.requirements are relatively lower such as,
As high voltages are required to fill theflashlights, mobile systems and car but commercial
transformer of those companies, AC powerpower plants still produce AC as they are quite
supply is needed where as, DC provide current oncheaper and reliable.
a small-scale basis.Alternating current can be transformed into higher
AC power is nowadays used all over the world.or lower potentials and even a transformer can
AC power in reality reverses direction. In US, theenhance or reduce AC power supply to whatever
current makes a complete cycle 60 times avalue is needed for the job.