UPS is a kind of unfailing electric source, which means, when a power-off situation happens, it can supply electric source seamlessly. Being able to do this is mainly due to UPS batteries, which can reflect rapidly at the moment of the power-off and can continue to supply the electric source seamlessly. An offline UPS will take 2-10 milliseconds to provide the electric source.
An ideal UPS should meet the following conditions: one, no matter high frequency online UPS or online low frequency UPS, make sure of a stable frequency one. Two, it should have a stable electric voltage between plus 5 percent and minus 5 percent. Three, it should not include distortion of harmonic wave. Four, it should not have a disturbance of noise. Five, it should have a low output resistance. Due to the character of online UPS above, there is no need to process the exchange system and it will cause zero delay to provide the electric source. What’s more, the UPS batteries enjoy a larger capacity and a bigger measurement, so it can last several hours functionally after the power-off situation.
Let’s imagine: when it comes to a power-off situation, if there is no UPS, it will cause a huge damage to your computer especially to the hardware, and the profile in the disc can not be saved in time. What a disaster! A UPS is just like an insurance, and an online UPS is like a double insurance, even there is no power-off situation, it also can maintain your electric source system all the time.