switching pc from 110 to 220??

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dj3642a

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Jul 12, 2015
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Hi all I have a question.. I live in the US now.. and will be moving over to Asia in the near future.. my question is this. In US we use 110v… and in Asia they use 220v.. I know on PC’s.. the power supply has a switch to change over and that’s fine. But my question is this and this may sound stupid but I have never been in this situation before.. but can a PC run on either 110 or 220 just by using the switch on the power supply. Or are the components made for US or Asia only?? Thanks.
 
Solution
InvalidError

In universal input PSUs and PSUs with APFC, there is no "auto-switching", the PSU simply has a wide input range covering something like 100-250VAC nominal. In APFC PSUs, whatever the input voltage is gets boosted to somewhere in the neighborhood of 350VDC.

In PSUs with a switch, the input filter is split between two 200V capacitors in series and the switch shorts neutral to the point between the two capacitors to form a voltage doubler circuit which will feed 200-350V to the switcher's input from 90-125V input. On 220V, the link is open and neutral current goes to the capacitors through the diode bridge instead.
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USAFRet

USAFRet

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Mar 16, 2013
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The power supply is the only component that cares. And most current ones are autoswitching.
Everything after the PSU is the same all over the world.
And really, it's only the cable from the wall that's different.

What PSU do you have?
 
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NightAntilli

NightAntilli

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Jun 12, 2014
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Only the power supply matters. You have to check if your power supply has a switch to change between 110v/220v. Most modern power supplies automatically switch, except the ones that come with pre-built computers from the likes of HP, Dell and so on.
 
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InvalidError

InvalidError

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In universal input PSUs and PSUs with APFC, there is no "auto-switching", the PSU simply has a wide input range covering something like 100-250VAC nominal. In APFC PSUs, whatever the input voltage is gets boosted to somewhere in the neighborhood of 350VDC.

In PSUs with a switch, the input filter is split between two 200V capacitors in series and the switch shorts neutral to the point between the two capacitors to form a voltage doubler circuit which will feed 200-350V to the switcher's input from 90-125V input. On 220V, the link is open and neutral current goes to the capacitors through the diode bridge instead.
 
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dj3642a

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Jul 12, 2015
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ok thanks for the info. i have a corsair 750w
 
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