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Old 07-08-2009, 09:17 AM   #1
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Default Huntkey V-Power 550 W Power Supply Review

There has been a new article posted.

Title: Huntkey V-Power 550 W Power Supply Review
URL: http://www.hardwaresecrets.com/article/754

Here is a snippet:
"If you follow closely our power supply reviews you know that all power supplies from Huntkey Green Star series explode if you try to pull its labeled power (we tested the 350 W, 400 W, 450 W and 550 W..."

Comments on this article are welcome.

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Old 07-09-2009, 08:09 PM   #2
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Quote:
Originally Posted by Gabe View Post
and the fuses from our load tester blew
What blew and how?
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Old 07-09-2009, 09:41 PM   #3
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Quote:
Originally Posted by Travis View Post
What blew and how?
The 2SC3320 switching transistors after 45 seconds at 532W @ 46C :

Quote:
"This time there was no explosion, though. After 45 seconds on test five we heard a loud low-frequency hum and the fuses from our load tester blew. After disassembling the power supply we tested all components and the two switching transistors were burned, just like it happened with all other power supplies from Green Star series when we tried to pull its labeled power."
It was probably pre-heated during test 4 (427W).
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Old 07-12-2009, 11:23 AM   #4
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I'm beginning to think that the main issue with these PSUs is their lack of PFC circuitry. The result of that might be a much higher pull of current than necessary, resulting in blown components.

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Old 07-13-2009, 07:09 AM   #5
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Negative. The problem is using switching transistors with a current limit lower than necessary. The presence or or not of the PFC circuit has nothing to do with this, otherwise all other power supplies without PFC we reviewed would have to explode as well, which is not the case.

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Old 09-22-2009, 01:03 PM   #6
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I have a question. This unit is not for sale in North America. But it also can't be sold in Europe because it lacks active PFC. So... Where *can* you buy this unit? Only in Asia?
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Old 09-22-2009, 03:36 PM   #7
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Quote:
Originally Posted by Phaedrus View Post
I have a question. This unit is not for sale in North America. But it also can't be sold in Europe because it lacks active PFC. So... Where *can* you buy this unit? Only in Asia?
Brazil, Gabriel's homeland.

Thanks to his tests the "smart guys" that recommended crappy PSUs like if they were "golden" ones were silenced..

Last edited by Gabriel Torres; 09-23-2009 at 08:38 AM. Reason: Typo
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Old 09-23-2009, 08:36 AM   #8
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Quote:
Originally Posted by Phaedrus View Post
I have a question. This unit is not for sale in North America. But it also can't be sold in Europe because it lacks active PFC. So... Where *can* you buy this unit? Only in Asia?
Asia and Latin America, where there is no entity to prevent the selling of crappy products. Although Hardware Secrets is based in the United States, I think it is interesting to time to time to review products that most websites are not talking about because they are not sold in the US or Europe. This helps opening the eyes of users located in other countries, where information about this kind of product is practically non-existent.

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