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Corsair AX1200 single rail worries - Page 4

post #31 of 39
Quote:
Originally Posted by Phaedrus2129 View Post
It's a quality power supply.

But it is an example of the point where single rail becomes dangerous. When [H]ardOCP was testing the AX1200 there was a parasitic short circuit in their equipment. The AX1200 pumped nearly 100A of current through equipment not designed for that load.
I have never spoken to you, nor provided you with the diagnostic reports on the load tester or the sample following the failure of this unit so I am unfamiliar with where you are getting your information that the load tester had a short. The only way you would have access to the pertinent information would be if you worked for Corsair, worked for the repair and recalibration facility, or were me.


Quote:
It fried their Chroma ATE
I do not use a Chroma ATE as it does not measure at the connector correctly and requires extensive modification/customization in order to test according to the ATX12v/EPS specification. I use a SunMoon SM-8800.

Quote:
and oscilloscope
It did not damage the oscilloscope.

Quote:
A few thousand dollars worth of damage.
This part is correct. However, the unit was coming up on its required re-certification and recalibration time so some of the cost is offset in its periodic maintenance.


Quote:
The PSU did not CAUSE the problem. It just didn't have the protection (OCP) that would have stopped the problem before it got worse. The odds of you having that type of short circuit are very low.
Again, I have never spoken to you, nor provided you with the diagnostic reports on the load tester or the sample following the failure of this unit so I am unfamiliar with where you are getting your information but it is not quite accurate.

Losing a unit on the secondary side has damaged the test equipment on a number of other occasions as well (and I have lost variacs as well), and these were not just from no-name brands. Every brand has bad units that slip through, Corsair is no different. Like I said in the review you simply take them in stride and you move on. Now perhaps it is time to stop beating a dead horse.
Edited by [Spectre] - 2/23/11 at 12:12pm
post #32 of 39
We have spoken before, but not about this. My information was second or third hand, so I guess it got garbled somewhere along the line.
post #33 of 39
Quote:
Originally Posted by Imglidinhere View Post
The AX1200 is a complete sidegrade from the Antec 1200w PSU. In fact, the Antec 1200w was run at the level of a 1700w PSU and held perfectly fine.
you mean that vid with multimiter? it wasnt the output of psu. it was power draw from the wall.
post #34 of 39
Hello guys, I have a question about this AX1200. Does it pump 100A on the 12v all the time? I'm assuming it is only if you load it to the max? If yes, then why would a short circuit pump exactly 100A (sorry don't know enough about electronics/power) =)

I'm worried because I have ordered this power supply (I wanted something a little futureproof), and my setup is modest.

Edit: Instead of the AX1200, what PSU would you recommend if I plan on getting a better GPU later?
Edited by pslind69 - 7/4/11 at 6:23am
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post #35 of 39
Quote:
Originally Posted by pslind69 View Post
Hello guys, I have a question about this AX1200. Does it pump 100A on the 12v all the time? I'm assuming it is only if you load it to the max? If yes, then why would a short circuit pump exactly 100A (sorry don't know enough about electronics/power) =)

I'm worried because I have ordered this power supply (I wanted something a little futureproof), and my setup is modest.

Edit: Instead of the AX1200, what PSU would you recommend if I plan on getting a better GPU later?
The short wouldn't put exactly 100A through the wire. The short causes a spike, and the current would just keep climbing until something fries or OPP/OVP kicks in.
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post #36 of 39
I wish your 965 a painful frozen death
post #37 of 39
Quote:
Originally Posted by GameBoy View Post
The short wouldn't put exactly 100A through the wire. The short causes a spike, and the current would just keep climbing until something fries or OPP/OVP kicks in.
Aha =) Btw reading the 1000w faq helped a lot in understanding things too.

But I don't understand why the PSU doesn't sense that it is pumping all this juice out if there is a short?
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post #38 of 39
Judging by the amount of setups I see on LN2 with AX1200's, or multiple of them, I wouldn't worry.

I personally desire fully modular (24 pin included) and am looking at the AX1200.

I've also considered the ST1200-G
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post #39 of 39
Quote:
Originally Posted by pslind69 View Post
Aha =) Btw reading the 1000w faq helped a lot in understanding things too.

But I don't understand why the PSU doesn't sense that it is pumping all this juice out if there is a short?
Because sensors don't work by magic. The SCP sensors simply monitor the current per cycle pulled through the switching transistors, and if they see something over xx% change in one cycle they assume it's a short circuit and shut the PSU down. But the sensor can't assume less than a certain amount, or it might shut down during normal operation.
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