Updated: 09/15/2017 by Computer Hope

Short for standby power supply, an SPS contains a circuit that tells if and when a disturbance in electricity occurs. When a disturbance occurs, the SPS switches to battery power, however, if the SPS switch time is not fast enough, all power may still be lost. Higher quality SPS systems offer a ferroresonant transformer that offers a small amount of power while switching takes place.

Computer acronyms, Power terms, UPS