Ups uninterruptible power supply back - up and on - line difference is what does anyone know?
Online UPS
This UPS has been in the inverter in its working state, it first through the circuit to convert the external AC into direct current, and then through the high-quality inverter to convert DC to high-quality sine wave AC output to the computer. On-line UPS in the power supply under the main function is to regulate and prevent radio interference; in the event of power failure when the use of standby DC power (battery) to the inverter power supply. As the inverter has been working, there is no switching time problem, suitable for the power supply has strict requirements of the occasion. On-line UPS is different from the backup of a major advantage is the power supply is long, usually for a few hours, there are up to a dozen hours, and its main function is to allow you to power outages can work as usual, obviously , Because of its special features, the price is also significantly more expensive. This on-line UPS is more suitable for computers, transportation, banking, securities, communications, medical, industrial control and other industries, because these areas of the computer is generally not allowed to power outages.
Backup UPS is also known as non-online UPS
??Backup UPS: usually in the battery charge state, in the event of an emergency switch to the working state of the inverter, the battery provided by the DC into a stable AC output, so the backup UPS is also known as off-line UPS. Backup UPS power supply advantages are: high efficiency, low noise, the price is relatively cheap, mainly applicable to major fluctuations in electricity, the power supply quality requirements are not high occasions, more suitable for home use. However, this UPS has a switching time problem and is therefore not suitable for use where critical power supplies can not be interrupted. But in fact this switch is very short, usually between 2 to 10 milliseconds, and the computer's own switching power supply in the power failure should be able to maintain about 10 milliseconds, so the personal computer system is generally not because of this switching time problem. Backup UPS can only continue to power a few minutes to tens of minutes, mainly to let you have time to back up data, and as soon as possible the end of the work, the price is low. For computer applications that are not too critical, such as personal home users, they can be equipped with a low-power backup UPS.
General market are back-up UPS, cheap, can be used on the line
