
The interpretation of the power supply nameplate is definitely based on the nameplate when purchasing a power supply. What is a nameplate? It's a sticker on the power supply that says various parameters. The following figure shows a typical power supply with a very standardized nameplate: generally speaking, a full voltage (capable of supporting both 110V from abroad and 220V from China) is definitely better than a 220VOLTY. The rated output power of 12V determines what configuration can be brought. For multi mechanical hard drives, attention should also be paid to 5V. However, this is also related to the power supply scheme, which will be explained later. Overall, when buying a power supply, the first thing to consider is 12V. As long as the rated output of 12V is greater than the maximum power of your CPU+graphics card, it means that this power supply can drive your computer. However, this can only indicate that it can drive, and other indicators are also important. Another thing to note on the nameplate is the maximum output power and rated output power. Rated output power (or real continuous load, meaning actual continuous load) refers to the ability to operate normally within this power range without any problems. The maximum output power refers to the maximum power that can be achieved in a short period of time. If your power supply is written with rated output or continuous load and is a large brand, then there is no problem within this value; If the maximum output power is indicated, it can be considered to choose a higher power source for calculation. Perhaps some friends have heard of the saying 'choosing a power supply for only 1 yuan is enough to buy 1 watt', which may sound fine at first glance, but in reality, it is still not rigorous. For beginners, if the nameplate of a power supply has any missing labels in items 3-6 (such as multi channel+12V not labeled+12V combined output power) or disorderly labels (such as not labeled with rated, only labeled with PEAK peak), then such a power supply can directly PASS out. The stability of power supply generally refers to the stability and instability of power supply, and the most important factor is the stability and instability of voltage. During general testing, the three voltage paths of 12V5V3.3V can be observed. 12V - closer to 12.000V, better. 5V - The closer to 5.000V, the better. The closer 3.3V is to 3.300V, the better. The voltage is too low, and the hardware cannot function properly. If the voltage is too high, some power supplies will turn on automatic protection to reduce the voltage, while others will directly turn off. The reasons for the formation of ripples are quite complex. Simply put, during the process of converting alternating current into direct current through rectification and voltage stabilization, there is inevitably some alternating current component in the direct current. This superimposed alternating current component on the direct current is called ripple. If the ripple is large, it will increase the filtering pressure on the hardware, such as exploding capacitors, damaging the hard drive, and even causing board damage in severe cases. Dynamic performance refers to the instantaneous voltage fluctuations of a power supply during heavy load fluctuations. This includes changes in voltage and voltage waveforms. At the moment when the load changes in height, the more stable the voltage, the better, and the closer the waveform is to a straight line, the better. Because there is currently no fixed standard for this test P>
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China