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PC Power Supply Discussion Troubleshooting and discussion of computer power supplies

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Old 04-03-2011
rafal_iB_PL rafal_iB_PL is offline
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Good luck checking ripple with DMM too. Even with scope it isn't exactly straightforward.
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Old 12-13-2012
aspirem3802 aspirem3802 is offline
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Thanks for the information... I hope this information will educate people when they build their next system, I would like to see more generic PSU reviews though, and more silvery explosions!
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Old 07-15-2014
sharif sharif is offline
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Nice post

just made a account just to post this reply
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Old 02-16-2015
jamesd168 jamesd168 is offline
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nice tutorial Johnny, I learned something new today

so where is this cat now? I would like to talk to him.
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Old 1 Day Ago
ashiekh ashiekh is offline
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Interestingly America has 220v; there is a 220v circuit in most American houses for the high consumption devices (clothes dryer, range etc.)

There is one terrible disadvantage to the way 110v is often implemented in America, namely through a neutral line that divides the 220v into two circuits of 110v. Some devices in the house are on one circuit, some on the other. Now the problem: if that dividing neutral should ever fail due to a bad connection then some devices can be exposed to more than 110v and destroyed (it is almost paradoxical that the loss of a connection can lead to higher voltage).
To be explicit, have a washing machine on one circuit and a PC on the other; disconnect the dividing neutral and the 220v now goes across the two devices in series and the voltage is now unevenly distributed across them.
The following video illustrates it better than I can

My point is that auto-switching PC power supplies might be able to survive an open neutral; unfortunately most of my PCs use manual voltage selectors
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