Читать книгу Laptops For Dummies - Dan Gookin - Страница 56

I advise my desktop computer readers in PCs For Dummies (Wiley) to consider investing in an uninterruptible power supply, or UPS — specifically, one with both surge and spike protection. This device serves to protect the computer from nasty electrical intruders that can come through the power lines, but also to provide emergency power if the electricity goes bye-bye.

A UPS for a laptop is unnecessary. The main reason is that your laptop already has a battery for backup power. If you’re running your laptop from an electrical outlet and the electricity goes off (or some doofus unplugs it), the laptop quickly and happily switches its power source to the internal battery. Nothing is lost!

 Although you don't need a UPS for your laptop, I still highly recommend plugging your portable ’puter into a power strip that offers surge protection and line filtering. Such a gizmo helps keep your laptop’s power source clean and steady.

 Generally speaking, if a lightning storm is nearby, don't plug your laptop into the wall unless you're using a spike protection filter. This admonition holds for the network cable as well. Wait until the storm passes before reconnecting the laptop.