How do you link 2 PSU in parallel?

Doraemon · 01-11-2002, 10:38 AM

How do you link 2 PSU in parallel and use that to power the motherboard?

Joe · 01-13-2002, 04:54 PM

http://www.procooling.com/articles/h..._as_one_.shtml

Onda's great write up explains it well.

Brad · 01-14-2002, 06:41 PM

unless you want to do atx psu's

if so then you just cut all the wires and resolder them as a Y. it isn't good for the psu's and you will kill them eventually, but you can get 2x 300w deer's to perform like a pcp&c one

resago · 01-14-2002, 08:09 PM

it would be a lot easier to use some 14 or 12 gauge wire to bridge the voltage points on the pcb board in the PSUs, If you've ever had a PSU open, you see what I'm talking about.

you'd need about 6 wires (I think)

Doraemon · 01-15-2002, 06:09 PM

I read the article in Procooling. There was a link in that article to another source, that source was saying use diode if you want to connect them in parallel, but if I remember correctly, diode will have voltage drop of ~0.7V, which might not be enough Voltage if my PSU is already 11.XX on 12V line.

OnDaEdg was suppose to write something about how to do it, but I guess he was too busy. I read about people who do the Y thingy, that was what I was going, but OnDaEdg and I quote him

"....Some people are just splicing two power supplies together. That is not the correct way to do it, ..."

So what is the correct way?

Thanks.

meck · 06-05-2002, 06:51 PM

aaaaaaa series or parrel i dont see a problem ? as long as they are matched ps.s . same spec??.

Brad · 06-06-2002, 03:52 AM

if they are identical psu's I doubt it would be too much of a problem. My friend has been running 2x 400w psu's in a simple Y to power his 200w athlon for about 6 months now, no problems at all.

But if you linked up an Enermax 350w and a Deer 400w you'd quite possibly have some major problems

01-11-2002, 10:38 AM	#1
Doraemon Cooling Neophyte Join Date: Oct 2001 Posts: 6	How do you link 2 PSU in parallel? How do you link 2 PSU in parallel and use that to power the motherboard? Last edited by Doraemon; 01-11-2002 at 12:13 PM.

01-13-2002, 04:54 PM	#2
Joe The Pro/Life Support System Join Date: Dec 1999 Location: Denver, CO Posts: 4,041	http://www.procooling.com/articles/h..._as_one_.shtml Onda's great write up explains it well. __________________ Joe - I only take this hat off for one thing... ProCooling archive curator and dusty skeleton.

01-14-2002, 08:09 PM	#4
resago Cooling Savant Join Date: Mar 2001 Location: state of denial Posts: 488	it would be a lot easier to use some 14 or 12 gauge wire to bridge the voltage points on the pcb board in the PSUs, If you've ever had a PSU open, you see what I'm talking about. you'd need about 6 wires (I think) __________________ 2.4Ghz Compaq Workstation 2.8Ghz Custom 2700+ Custom still running 2000!!!! Help with Coding www.resago.com

06-05-2002, 06:51 PM	#6
meck Cooling Neophyte Join Date: Oct 2001 Location: grandrapids michigan usa Posts: 5	series power supply aaaaaaa series or parrel i dont see a problem ? as long as they are matched ps.s . same spec??.

06-06-2002, 03:52 AM	#7
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	if they are identical psu's I doubt it would be too much of a problem. My friend has been running 2x 400w psu's in a simple Y to power his 200w athlon for about 6 months now, no problems at all. But if you linked up an Enermax 350w and a Deer 400w you'd quite possibly have some major problems __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

01-14-2002, 06:41 PM	#3
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	unless you want to do atx psu's if so then you just cut all the wires and resolder them as a Y. it isn't good for the psu's and you will kill them eventually, but you can get 2x 300w deer's to perform like a pcp&c one

01-15-2002, 06:09 PM	#5
Doraemon Cooling Neophyte Join Date: Oct 2001 Posts: 6	I read the article in Procooling. There was a link in that article to another source, that source was saying use diode if you want to connect them in parallel, but if I remember correctly, diode will have voltage drop of ~0.7V, which might not be enough Voltage if my PSU is already 11.XX on 12V line. OnDaEdg was suppose to write something about how to do it, but I guess he was too busy. I read about people who do the Y thingy, that was what I was going, but OnDaEdg and I quote him "....Some people are just splicing two power supplies together. That is not the correct way to do it, ..." So what is the correct way? Thanks.

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