power bar : Computer Hardware Buyers’ Glossary

2007-09-09 by Roedy Green ©1997-2008 Canadian Mind Products
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power bar

A power bar is basically a heavy duty extension cord that lets you plug in 6 or 8 devices.

Sizing

Consider the following devices associated with your desktop computer that might need an AC connection:

computer
monitor
ink jet printer
laser printer
speakers: via AC⇒DC adapter
router: via AC⇒DC adapter
DSL or cable modem: via AC⇒DC adapter
telephone/answering machine/fax: via AC⇒DC adapter
wireless mouse: via AC⇒DC adapter
laptop: via AC⇒DC adapter
secondary computer
lamps
sound recording and playing equipment
outlets for other computers you are using, repairing or testing.
soldering iron
office equipment

AC adapters are often bulky and cover up more than one outlet.

Here are two ways to get large number of outlets:

cascading, plug a power bar into another in a daisy chain.
Have an electrician install a power strip at a convenient height along the wall. You can then snap on as many outlets as you want wherever you need them. This is surprisingly inexpensive.

Surge Protection

Power bars contain surge protectors in them. They protect your computer equipment from damage from a sudden spike overvoltage. They also prevent your computer from making errors or rebooting when a spike hits. I consider this protection absolutely mandatory. However, they can’t do a thing if for a sagging undervoltage. For that you need an UPS. You have to spend $40.00 CAD or more to get a surge protector that won’t be fried, (and hence useless) after the first few hits.

power supply
UPS

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