How does a computer’s UPS work?

Your computer or laptop is able to withstand slight differences in power, but a significant change will cause the power supply to fail! A UPS is generally there to protect your PC against these different power problems…

Surges and spikes – Times when the voltage on the line is much more than it should be.

Sags – Times when the voltage on the line is less than it should be.

Total power failure – Times when a line goes down or a fuse blows somewhere on the grid or in the building or area.

Load shedding – Times when the power is cut purposely to avoid excess load on the power system.

Frequency differences – Times when the power is swaying at something other than the right frequency.

There are two common systems that we use today, standby UPS devices and continuous UPS devices. A standby UPS runs the computer off of the normal power until it detects a problem. At that point, it will very quickly turn on the power inverter and run the computer off of the UPS’s battery.

In a continuous UPS, the computer is always running off of the battery power and the battery is always being recharged. It is possible to build a simple UPS yourself, using a large battery charger, a battery and a power inverter. If the power fails, the battery will then give power to the inverter. There is no switch-over time in a continuous UPS device.

Standby UPS systems are far more common for home and small-business use because they tend to be a lot cheaper than a continuous UPS. Continuous systems provide clean, stable power, so they are usually used for servers.

Off Grid can provide you with backup power solutions for you or your business, including a variety of UPS devices. Our load shedding solutions are both easy to work and affordable, so when the power goes out, you will not be inconvenienced.