5 Common Sense About Desktop Power Unit

1, what is active PFC?

Active PFC is mainly composed of high-frequency inductors, switching tubes, capacitors, and control ICs. It can be simply summarized as a step-up switching power supply circuit. This circuit is characterized by complex structure, but has many advantages: power factor is as high as Low loss and high reliability, input voltage can be from 90V to 270V (wide input), etc., because the output DC voltage ripple is small, so the power supply using active PFC does not need to use a large capacity filter capacitor, so we choose the power supply It depends on whether the product adopts active PFC.

2, what is the conversion efficiency?

Answer: Because the power supply is working, some departments’ electrical energy is converted into heat loss. Therefore, the power supply must minimize heat loss. Conversion efficiency is the percentage of output power divided by input power. The 1.3 version power supply requires a minimum conversion efficiency of 70% at full load. In version 2.0, the recommended conversion efficiency has been improved to 80%. Selecting a power supply with higher conversion efficiency can help us save more power.

3. What is 80PLUS certification

PLUS80PLUS certification is actually a sign of high power conversion efficiency. The certification requirement is to integrate the internal power supply of the system to enable the power supply to achieve 80% power efficiency at load points such as 20%, 50%, and 100%. 80PLUS-certified power supplies will have higher conversion efficiency than ordinary power supplies, while also saving energy and money. Batteryclub currently. All desktop power supplies provided by org are provided by 80plus certified manufacturers to ensure safety and reliability.

4. What is the rated power?

A: The rated power refers to the maximum load of the PC power supply under uninterrupted and continuous work. The rated power represents the true load capacity of a power supply unit. For example, the rated power of a power supply host is 300W, which means 24 days a day. When working continuously for hours, 365 days a year, the sum of all loads cannot exceed 300W. But in fact, the power supply has a certain degree of redundancy in order to be able to operate normally when the output power of the power supply reaches a full load, and to avoid damage to the power supply and other components to burn.

5. What is overpower protection?

Answer: In addition to the rated power, there is also a data called “overload protection (OPP)”. Overload protection means that the load of the power supply continues to rise and reaches a certain point, and the power supply is automatically cut off to avoid overcurrent damage to the power supply or other parts of the computer. The OPP value is usually about 1.3 times the rated power. Between the rated power and the OPP, there is a “blind zone”. For example, if the rated power is 300W and the OPP is 370W, then this area between 300-370W is a “blind zone”. If you stay in this zone for too long (usually it can last for tens of seconds), it may cause the power supply or other parts of the computer to burn out.