Uninterruptible power supply

Uninterruptible power supply — a power source that provides protection from interference in the network of the main power source when the main power source is temporarily disconnected. The UPS is a secondary power source. Both the quality of electrical energy and the parameters of electrical energy (voltage, frequency) can be converted.

Uninterruptible power supplies have been developed in parallel with computers and other high-tech devices to provide reliable power to this equipment, which standard power supply networks cannot provide. The most widely used designs are as a separate device, including a battery and a DC-to-AC Converter. Flywheels and fuel cells can also be used as a backup source. Currently, the power of the UPS is in the range of 100 W … 1000 kW (or more), various output voltages are possible.