uninterruptible power source
An uninterruptible power supply, often abbreviated as UPS, is an important piece of equipment that's designed to protect other electrical equipment. It is an easy-to-use, reliable standby power source which can deliver continuous electricity and has no dependences on mains supply changes. UPSs are essential for power conditioning, battery backup and spike suppression. Through advanced technological features, such as automatic voltage adjustment, battery management systems and the provision of a completely sine wave output that all connected devices would receive stable clean power. The use of UPSs has spread rapidly from data centres to hospitals, from banks to any site where instant continuity of electrical service is indispensable.