Power Protection

While there are many less-expensive methods you can employ to provide some degree of protection for your PC from power problems, none of them can insulate your system from power troubles as well as a good uninterruptible power supply (UPS). The idea behind a UPS is pretty obvious from the name. In addition to filtering, enhancing or modifying the utility power, special circuitry and batteries are used to prevent the PC from losing power during a disruption (blackout) or voltage sag (brownout). These units are called different names depending on their exact design, but all fit into the general category of backup power.