Tips to Act Wisely in Choosing Power Supply

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Tips to Act Wisely in Choosing Power Supply
How does a  power supply  work? A person who intends to build a PC system must be able to choose an efficient power supply  model  and have high power. This article will guide you with a number of tips for choosing the right  power supply  (PSU).


One of the basic tips in choosing a PSU is: choosing the most efficient means an opportunity to enjoy the more value offered by the PSU market. Therefore here we would like to invite potential buyers to learn the technology, facts, and terminology that works behind PSU for PC. We will start by discussing about the efficiency of PSU.

How to know PSU efficiency

One easy way to measure PSU efficiency is: whether a particular product meets Energy Star 5.0 standards and whether a PSU meets the 80 PLUS efficiency criteria. The latter is a requirement that must be met by a PSU and is a recognized standard across the country.

The maximum efficiency and maximum power of a CPU is determined by a series of tests, which will then determine whether a PCU brand is entitled to embed the 80 PLUS symbol or not. The illustration below will explain a bit about the 80 PLUS scheme on a CPU.

1.80 PLUS certification

However, the 80 PLUS certification concept has now been revised. The market adds a definition that makes the code more stringent. In Bronze, Silver, Gold and Platinum certifications, for example, each type of certification requires a separate request. If a CPU gets 80 Plus Gold or 80 PLUS Platinum, then both are much more efficient than the PSU product that does not have it. The price of course will be more expensive.

2. Questioning power on a PSU

This becomes an important talking point on a PSU. How much power can be supplied by the CPU, especially when routed through a variety of voltages. Nowadays, most PSUs draw power through the +12 V rail. For comparison, the 3.3 and 5V voltages play fewer roles than + 12 V. Therefore there is a simple rule: when a rail on a 12V PSU can supply all sorts of power requirements, and then still leaving a small portion of the power, the smaller voltage will not make much difference.

3. Security becomes the most important thing

In short, buy a PSU that can ensure the security of PC devices and users. There are many terms in a PSU that can explain the availability of a security system on the device, so make sure that all the security features are available in it.

  • OVP (Over-Voltage Protection (primary and secondary)
  • OTP (Over-Temperature Protection)
  • OPP (Over-Power Protection)
  • OCP (Over-Current Protection)
  • SCP (Short-Circuit Protection)
  • NLO (No-Load Operation)
  • UVP (Under-Voltage Protection (primary and secondary)

A good PSU should install an IC protections . Unfortunately, some PSU manufacturers sell very cheap PSU models, with MOV and conventional fuse and call it PS with surge and short-circuit protection. Though it sounds right, judging from the technical aspect, but such a combination recipe means a disaster. The price of a very cheap PSU can have costly consequences for its users.

4. Capacitors and fans are also important

Capacitors determine the durability of a PSU in long-term use. Therefore APFC cap should be of high quality. Furthermore, the electrolyte cover on the second side should be made by a manufacturer that has a flying clock and a high reputation. In addition, the electrolyte cover must have a temperature rating of 105 ° C, and not 85 ° C. In a PSU, the presence of electrolytes is important. You will find it through the image below.

Just like the capacitor, the fan also plays an important role. There are many types of kipasyang installed in the body of the PSU, but generally only three types are often encountered:

Hydro Dynamic Bearing (HDB) and Fluid Dynamic Bearing (FDB) that can last 50-150,000 hours of usage.
DOuble ball-bearing that can last 40-50,000 hours of usage.
Sleeve bearings that can last for 30,000 hours of usage.

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