Notice: Use of undefined constant blogid - assumed 'blogid' in /www/hardwaresecrets/blog.php on line 4 Notice: Undefined variable: monthid in /www/hardwaresecrets/blog.php on line 5 Hantol PSU: Fake PFC Made of Cement | Hardware Secrets
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Hantol PSU: Fake PFC Made of Cement
Author: Gabriel TorresDate: April 18, 2012 - 9:39 AM PST

We discovered that power supplies from Hantol have a fake PFC coil, where the coil is made out of cement (yes, cement), so the power supply feels heavy. See the pictures and help us expose this fraud.

I bought this low-end Hantol Silent ATX 700 W Pro power supply for reviewing for Clube do Hardware, my Brazilian website, since it is quite popular down there. When I opened it, I saw the passive PFC coil (a component that looks like a transformer), and I was wondering how a power supply that probably cost USD 15 in China could possibly have a PFC circuit. Then I remembered the case of the “AOBAMA” (yes, you read it right) power supply that I saw online, which had a fake PFC coil made out of cardboard. In fact, there is an article at that shows several power supplies with fake PFC coils. Even though the article is in Chinese, you should take a look at the pictures. So, I decided to disassemble the PFC coil and bingo! Instead of a coil wrapped around iron plates, what I found was a piece of cement (i.e., a rock). See pictures below.

Hantol Fake PFC Transformer
click to enlarge
Figure 1: What looks like a passive PFC coil

Hantol Fake PFC Transformer
click to enlarge
Figure 2: What looks like a passive PFC coil

Hantol Fake PFC Transformer
click to enlarge
Figure 3: Really?

This was done to deceive users in two ways. First, people may assume that this unit has a passive PFC circuit, which is not the case. Second, with a piece of cement inside the unit, it is heavier, and a lot of users when buying entry-level power supplies tend to assume that heavier models are better, as they have more components and bigger heatsinks. Well, you simply can’t trust this “technique” anymore!
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