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PC Hardware in a Nutshell, 3rd Edition
book

PC Hardware in a Nutshell, 3rd Edition

by Robert Bruce Thompson, Barbara Fritchman Thompson
July 2003
Beginner to intermediate content levelBeginner to intermediate
874 pages
38h 13m
English
O'Reilly Media, Inc.
Content preview from PC Hardware in a Nutshell, 3rd Edition

Chapter 27. Backup Power Supplies

There really is a difference between an uninterruptable power supply (UPS) and a standby power supply (SPS), but common usage now designates a unit properly termed an SPS as a UPS. We call a unit of either sort a backup power supply (BPS), which neatly sidesteps the terminology problem.

A BPS comprises a battery and some supporting circuitry, and is designed to supply power to your PC for a short period if the utility power fails. This temporary reprieve allows you to save your work and shut down the PC in an orderly fashion. BPSs differ in the quality of the power they supply, how much power they can supply, and for how long they can supply it. BPSs also condition the utility power to protect equipment against spikes, surges, drops, brownouts, and electrical noise.

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Publisher Resources

ISBN: 059600513XErrata Page