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External Power Problems
There are several types of problems that your computer's internal power supply will be subjected to if you choose to plug the computer right into the wall. Some are minor problems that your system may be able to deal with, while others can cause data loss or even permanent damage to your PC. In the section on electrical basics, we showed what ideal sinusoidal AC electricity looks like. Unfortunately, that's not what really comes out of the wall in the real world.
In this section we take a look at some of the common problems that plague conventional utility power.
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