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4hv.org :: Forums :: General Science and Electronics
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2 switching PS parallel?

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dingo27
Mon May 12 2008, 05:49PM Print
dingo27 Registered Member #890 Joined: Tue Jul 10 2007, 10:06PM
Location: Slovakia
Posts: 180
Can i connect 2 SPS from PC parallel and drive with it TC? will that be ok?

one has 12V10A and second 12V12A... or can i connect 12 + 5 ? (but HUGE differece between 12V12A and 5V33A)

thanks.
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Mads Barnkob
Mon May 12 2008, 06:26PM
Mads Barnkob Registered Member #1403 Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968
On the 24 pin connector that goes on the motherboard, you can get 17Vdc.

look at this picture for an ATX psu. in the bottom of the jack you should use the -5Vdc (left coloum, 3rd from bottom) and +12Vdc (right coloum, 1st from bottom)

Link2
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dingo27
Mon May 12 2008, 08:42PM
dingo27 Registered Member #890 Joined: Tue Jul 10 2007, 10:06PM
Location: Slovakia
Posts: 180
yeah i know about feature of " - " voltage, but that gives poor A value... i need more power, or just rewind transformer inside, but that way i need to rewind it all (biggest toroid trafo inside)...

i am just not sure if i can connect that in parallel.. that is all
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...
Tue May 13 2008, 05:30AM
... Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
You can connect them in parallel. Sometimes you need a small amount of resistance (few feet of wire would do it) to keep the supplies stable, but you can usually just parallel them up.
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