UPS

Reviewing what I have learned today, I found myself interested in Uninteruptable Power Supplies (UPS), and I decided to do some more research on it. 

Basically, UPS is an electric apparatus that provides emergency power to a load when the input power source fails. It's usually used to protect computers, data centers and telecommunication equipment as to not lose any data.

UPS have several devices, such as:

Standby - Also known as off-line or line-preferred UPS. The standby system operates with the switch setting the AC input as a primary power source, and alternating to the battery and inverter as backup sources in case of primary power failure. The inverter remains on standby, and only activates when the power fails. This only happens when the system is below 9V.

Line Interactive - The AC Power Inverter is connected to the UPS output, and the battery can be charged by operating in reverse while AC power is set normally. In case of a power failure, the transfer switch can shift electrical flow from the battery to the system output. The inverter is always connected to the output, so the UPS gives additional filtering and lowers the risk of switching transients. A tap-changing transformer is sometimes included in the line interactive UPS, and this allows it to provide voltage regulation that prevents the UPS from switching to battery power prematurely.


In General, UPS is very useful for many people to have. It is crucial for computer servers, companies, tech supports, and more.