[PConline Miscellaneous Talk] If the CPU is like the human brain, then the power supply is undoubtedly the human blood. It is not unique to computers, but it will never work without computers, just like the importance of blood to people. The last article by the editor, "Things Yo

[PConline Miscellaneous Talk] If the CPU is like the human brain, then the power supply is undoubtedly the human blood. It is not unique to computers, but it will never work without computers, just like the importance of blood to people. The last article by the editor, "Things You Don't Know about Power Supply (1): A Big Exposure of Japanese Capacitors" introduces all aspects of Japanese main capacitors. In the second phase, “What you don’t know about power supply”, it is naturally the turn of domestic main capacitors.

For domestic main capacitors, I believe everyone has a mentality of regret: When will domestic main capacitors catch up with Japanese main capacitors? Although there are many rumors in the Internet era, the editor must have factual basis before judging the quality of the main capacitor. Next, let’s take a look at what mainstream domestic capacitors are now.

power supply What you don’t know (2): Is domestic capacitors reliable?

In order to avoid unnecessary misunderstandings, the editor will again emphasize what is a main capacitor. As shown in the figure above, this cylinder is the main capacitor of the power supply. Its main function is filtering, which is used to filter out high-frequency and pulse interference, and the capacity of the main capacitor directly affects the holding time of the power supply. Let’s take a look at what domestic main capacitors are currently on the market.

. Domestic big brand main capacitor

. Domestic capacitor - Wanyu Sanxin Capacitor

Sanxin Main Capacitor

Wanyu International Group Co., Ltd. was established in 1979 and was listed on the Hong Kong Stock Exchange in 1997. The group is headquartered in Hong Kong and has production facilities in Dongguan and Wuxi, mainland China. As one of the world's five largest aluminum electrolytic capacitor manufacturers, its SAMXON "Sanxin" series has strong R&D capabilities and is a veteran domestic manufacturer. Not only does it appear in the mainstream power supply of 300W, but also high-end power supply such as 700 and 800W also have the Sanxin logo.

uses the Xilence QX Series 850W

. For example, a product from the German brand Xilence, Xilence QX Series 850W, uses the Sanxin main capacitor, 330UF 450V, and has passed the platinum verification, and its quality is still guaranteed. What does domestic capacitors with German brands mean? This shows that domestic main capacitors are still very reliable in the hearts of the rigorous Germans.

. Domestic capacitors - Dongyangguang HEC capacitors

Hangjia MVP500

I believe some Hangjia power supply players have understood it. , but if you observe carefully, you will also find that Dongyangguang also does medicine, health care and even imitate Japanese toilets, which is really shocking. Speaking of Dongyangguang's main capacitor itself, it adheres to domestic independent technology. Although it is not as stable and specification as the Japanese system, it can also be seen in low-priced power supplies of some big brands with its cost-effectiveness.

Hangjia MVP500 main capacitor comes from HEC

For example, Hangjia MVP500 main capacitor comes from HEC, with a specification of 330uF/450V, which is enough for a 500W power supply.

2. Domestic small workshop main capacitor

. Domestic capacitor - Jiahong BH main capacitor

Jiahong BH main capacitor

BH main capacitor can be seen in some miscellaneous counterfeit power supplies. Since it is so unpleasant, everyone estimates that its quality is not good. In fact, after testing, the brand's main capacitors generally have the disadvantage of large capacity deviations, so they can only rely on low prices to attract small workshop manufacturers.

. Domestic capacitors - HTC, H.Q, etc.

miscellaneous main capacitors, you can tell what's going on,

is not the HTC on the phone, but a miscellaneous HTC. The editor can't find its information at all... Because Baidu is full of HTC on the phone. The same is true for H.Q, a brand that doesn’t know what, and its manufacturer information can’t be found at all. The editor put it up just to let everyone know that this miscellaneous capacitor manufacturer will give you a bottom when purchasing. The problem is that the huge contrast between the nominal capacity and the actual capacity can easily cause miscellaneous manufacturers to inflated their power and mislead consumers.

to avoid losing the pit. In the end, it depends on the brand popularity

Summary: The current domestic capacitor market can only be described in the word "chaotic".The quality is uneven, and the quality of domestic large-brand capacitor manufacturers is still comparable to that of Taiwan and even Japanese. However, some miscellaneous capacitors can only be described as garbage. No matter what reason you are in, you cannot choose such miscellaneous capacitors. Who knows when it will suddenly turn off the light? So a safe way is to choose a well-known brand of power supplies.

Nissan capacitors and domestic capacitors form two extremes. So are there any compromise solutions? That is the Taiwan-system capacitor. For details, please pay attention to the third period. Please pay close attention to the second period of power supply.

Previous review:

Power supply What you don't know (1): Japanese capacitors are exposed