While not limited to safeguarding any particular type of equipment, a UPS is typically used to protect computers, data centers, telecommunication equipment or other electrical equipment where an unexpected power disruption could cause injuries, fatalities, serious business disruption or data loss.
picture below is a simple series of UPS. This series UPS has a power of 60W (if the transformer is used more, the power output of the UPS is also greater).
Gambar Skema Rangkaian UPS
Transformer: Min 4 ampere or more
Diode|Dioda: Min 5 ampere or more
Irfz 44: Paste cooling plate
When electricity PLN suppressed, the source voltage will switch to the battery. ups that may be living longer while the power off, use battery who have ampere / hour high (large) or can also install some of the ways in parallel battery