Uninterrupted power supplies are commonly used for computers. Computers are sensitive machines which can easily get affected by the sudden power cut or surge. To protect the components from getting damaged it is advised to use ups for PC [เครื่องสำรองไฟ คอม, which are the term in Thai].
It can also be found in data centers and telecommunication sectors. In addition to providing power supply during outages, it also regulates the voltage of the electricity provided to the system. The uninterrupted power supply has a battery inside it, which supplies power during the voltage fluctuation and power cuts.
Many stores sell uninterruptible power supplies [ขายเครื่องสำรองไฟฟ้า, which are the term in Thai] of different kinds. Standby UPS, Backup UPS, and Online UPS are some of the types of uninterrupted power supply that are available in the market.
- Standby UPS – It provides a short-time power supply during a power cut. All these power are provided by the battery present inside the UPS. Under normal conditions, the battery gets charged from the AC source. Depending on the model, it also can safeguard sensitive devices.
- Backup UPS – It is another kind of standby UPS. It has the ability to switch the power source to the internal battery in a few milliseconds. The change is not instantaneous but it makes sure that the computer does not get affected during the source change.
- Online UPS – It is the type of UPS that uses double or delta conversion technology. In other types of UPS, the battery inside the UPS gets charged during normal electricity supply. But in the double conversion technology, the electricity type is changed twice.
When connected to the power socket, the electricity passes through a rectifier. This rectifier changes the AC into DC. After this, it passes through a battery and then through an inversion. Here the DC is again converted into AC.
It ensures safe current to the system during its operating time. This device connected to this UPS does not experience any power surge or power dip effects.
On the other hand, other types of UPS change their power source during voltage surge and dip. UPS has a detector in it, which detects all the irregularities in the electricity. These detectors provide the signal for a change of power source.