What is the difference between backup and online UPS UPS? Who knows?
Online UPSThis UPS has been the inverter in the work of the state, it first through the external circuit AC into DC through high quality inverter to convert DC to high quality sine wave AC output to the computer. The main function of the on-line UPS in the power supply condition is to regulate voltage and prevent radio wave interference. In the power failure, the standby DC power supply (battery) is used to supply the inverter. Because the inverter is working all the time, there is no switching time problem. It is suitable for occasions where the power supply is strictly required. A major advantage of online UPS is different from the backup power supply for a long, usually for a few hours, also have to ten hours, its main function is to allow you to be working as usual, in case of power failure obviously, because of its special function, the price is obviously to a large portion of your. This on-line UPS is more suitable for computers, transportation, banking, securities, communications, medical, industrial control and other industries, because computers in these areas generally do not allow blackouts.General market are backup type UPS, cheap, can use on the line
However, this UPS has a switching time problem and is therefore not suitable for use where critical power supplies cannot be interrupted. But in fact the switching time is very short, generally between 2 to 10 milliseconds, while the switching power supply of the computer itself in power should be maintained about 10 milliseconds, so the personal computer system is generally not because of the switching time and problems. Backup UPS generally only lasts a few minutes to tens of minutes, mainly to allow you to have time to back up data, and as soon as possible to end the work at hand, and its price is also low. For computer applications that are not too critical, such as individual home users, they can be equipped with low-power backup UPS.
Backup UPS is also known as non line UPSBackup UPS: usually in the charge state of the battery, the inverter emergency switch to state during a power outage, changing a direct current to alternating current battery provides stable output, so the backup UPS also called offline UPS. The advantages of the backup UPS power supply are: high operating efficiency, low noise and relatively low price. It is mainly suitable for occasions where the radio waves are not large and the quality of power supply is not high, which is more suitable for family use.
