Online Double Conversion UPS
An online double-conversion UPS converts power twice. Initially, it converts AC input with all distortion, spikes, and other anomalies, into DC. This device uses a capacitor to stabilize the DC voltage and store the energy drawn from the AC input. Next, it again converts the DC into AC, which might differ from the initial AC input. If the AC input goes out of the specific range, the UPS drawer will power from its battery to ensure that UPS output isn’t affected.