An online UPS means that, regardless of whether the grid voltage is normal, the AC voltage used by the load must go through the inverter circuit, and the inverter will continue to work. Therefore, in the event of a power outage, the UPS can convert the stored power from the inverter to AC power to power the load, achieving the conversion goal of zero interruption to the output voltage.
Online means that the AC voltage used by the load must pass through the inverter circuit regardless of whether the grid voltage is normal or not. That is to say, the inverter circuit is always working, and the online UPS is generally a double-conversion structure. Double switching means that when the UPS is in normal operation, the power is switched between AC/DC, DC/AC twice, and then the load is provided.
This UPS uninterruptible power supply first converts external AC into DC through the circuit, and then converts the DC into high-quality sine wave AC through a high-quality inverter, and outputs it to the computer. In the case of online UPS power supply, the main functions are voltage regulation, anti-interference, and battery charging management. In the event of a power outage, use a backup DC power source (battery pack) to power the inverter. Because the inverter continues to work, there is no transition time issue if there are strict requirements on the power supply.