How to choose a computer power supply using a multimeter
Modern accessories like graphics cards, sound cards, optical discs, hard drives, and other devices do not need as little power as they once did. Have you ever considered that you ought to pair your fatty love machine with a strong heart?
The identifying method of computer power supplies has become the subject of numerous high-level prawns' opinions in various newspapers and magazines. There are primarily three things to note: Initial inspection should focus on the quality of the materials used in the power supply, the workmanship, and the arrangement. To be completely honest, this strategy is a little overwhelming. It first requires the implementer to have adequate electronic understanding. Secondly, in order to thoroughly inspect the power supply's six lungs and internal organs, you must remove the power supply's cover, which invariably damages the merchant's guarantee seal. If the seal is broken, it will be gone immediately.Even if there is an issue with the power supply, I have to do it myself because of the merchant's warranty. In their desperation and helplessness, I believe that many common novices are compelled to turn into prawns.
The second touch involves feeling the cover and the wind coming from the power supply fan after the machine has been running for a while.
Three smells: Check to see if the power supply emits a burnt odor after operating for a while. How can a rookie form a judgment without any experience? The last two are just the accumulation of perceptual experience.
Here, I suggest a technique that could be useful for beginners: using a multimeter to determine whether the power supply is excellent or faulty. Of course, you must first locate a multimeter (ideally a digital one) and be able to use one. The aTX power supply's voltage output mostly consists of 3.3V, 5.0V, and 12.0V. When more loads are connected, the difference becomes more noticeable, and 12.0V is the main energy source for driving hardware devices. As a result, after connecting all of the computer's loads. In order to detect the 12V output voltage, select a free output head and plug the red test lead into the yellow line interface and the black test lead into the black line interface.
As soon as the system boots up, we can observe that the multimeter's data is in constant flux and does not stabilize until the system has fully booted. At this point, note the voltage value. Normal operating conditions call for it to be between 11.95 and 12.15 volts (approximately 11.95 to 12.15 volts; too low to allow long-term steady functioning of heavy loads and lacks expansion potential; too high will cause the device to heat up and prematurely age). Then restart the computer by pressing the rESET key. The multimeter's value will drop to its lowest point during the power-on self-test at this point, so pay close attention to how it changes. At this point, make a note of the voltage value.The power supply is suitable if the voltage differential between the highest voltage value and the lowest value is not too great (within 0.3V). If the pressure difference is excessive, the power supply's load capacity is insufficient, making it unsuitable for selection. I've personally come across a 300W power supply that frequently crashes when in operation and has a maximum voltage of 12.32V but a minimum voltage of only 11.73V.
Finally, take note of the actual circumstance. Run a variety of programs and use the CD-ROM to play music simultaneously so that the entire machine can function. At this moment, pay attention to the voltage; if there isn't a clear fluctuation, choose it.
