Questions tagged [power-supply]
A power supply is an electronic device that supplies electric power to another device, such as a computer, monitor or printer. This is achieved by converting wall power (or mains power) to a lower voltage, and in most cases also from AC to DC. Most power supplies also provide protection from overload, power surges and other potentially problematic or hazardous conditions.
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Boot issues after thunder storm
The village where I live was sat under a thunder cloud for most of Friday, and we suffered a few power fluctuations (specifically, what seemed to be split-second outages). When I got back home from ...
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Likely reason for not being able to power on an older computer?
I demoted my older desktop computer to a server a short while back and it has always had some sort of problem with powering on after a complete power loss.
For instance, right now it's powered on and ...
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How to find polarity of a power supply that's lacking the customary markings
If I have a power supply (not a computer power supply, just a battery-replacing wall wart) and it doesn't have the usual polarity marking, how to I know if the tip is positive or negative?
Update: I ...
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Replace the power supply or buy a rebuilt computer [closed]
The power supply on my wife's computer just gave up the ghost.
I can replace the power supply for ~$100 or I can purchase a rebuilt machine from the same shop for ~$200.
Which option should I take ...
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Can I run a computer using DC power?
I always thought that using a conventional UPS with a PC is highly inefficient. Power goes from AC -> DC -> AC in UPS and then AC -> DC in PC SMPS. Since PC works only with DC (12, 5 and 3 volts) It ...
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Why computer switch off when connecting USB external HDD?
A friend of mine told me that its PC suffer strange behavior, sometimes doesn't reach the Windows welcome screen, or it switch off suddenly during it working or produce weird graphics on its monitor.
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Will leaving the laptop power brick connected to the power socket be dangerous?
My co-workers (who worked with the company longer than I have) loves to remove their laptop's power cord when they need to move around the office.
I frown on this practice since they usually don't ...
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Laptop power supplies, does current matter?
I have two laptops (same manufacture), with the same type of power connector.
However, the power supplies/transformers are slightly different.
The output on the first laptop's power supply is 15.6&...
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