Uninterruptible Powers Supply (UPS) is generally used for the purpose to supply power when power fails. UPS are of many types like, Online UPS, Offline UPS, Digital UPS etc. UPS are available from small power supply to high power supply. Nowadays UPS are used in Domestic as well as Company use. Due to the load shading that being carried out on large amount nowadays has increased the sell of UPS on large quantity. For domestic purpose UPS are generally used for personal computers as they are cheaper and they give battery back up of about 10 to 15 minutes. But the UPS used to supply power for all appliances in house is costly but gives long battery back-up of about 4 to 5 hours. These are generally Digital UPS.

UPS has helped on large amount in industrial and IT sector that’s because due to long hours of powers cut, companies and Industries have to wait for power . But due to UPS, power supply is continuous so called as uninterruptible powers supply.

UPS are silent then generators. So no noise pollution created. UPS need to be continuously charged so that they can supply power when power fails.