The power supply on a computer transforms the alternating current from the wall outlet into a direct current flow that the computer's components can use. Testing the DC voltage output of the power ...

If your computer is behaving strangely or randomly crashing, it can be hard to nail down the culprit. And as much as you don't want to believe it's the problem, testing your power supply should be ...

Most casual business users don't give a lot of thought to their computer's power supply unless they use a laptop and lose its AC adapter. However, desktop computer power supplies are crucial ...

Gamers may not care about the finer points of gallium nitride (GaN) chips as evangelized by power pioneer Alex Lidow, CEO of Efficient Power Conversion (EPC). But they will care that those chips will ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Sarah Witman Sarah Witman is a writer focused on batteries and charging ...

A power supply for electronic devices. Also called an "AC adapter" or "charger," power adapters plug into a wall outlet and convert AC to a single DC voltage. Computers use multiple DC voltages, and ...

A system that converts AC current from the wall outlet into the DC currents required by electronic circuits. A computer power supply converts AC into multiple DC voltages. For example, 12 volts is ...

1] Does the PSU fan spin on startup? Some users reported that their Power Supply Unit fan spins on startup but stops after some time. Others reported that the PSU fan does not spin even on startup.