1. Appearance inspection
Observe whether the appearance of the desktop computer power supply is damaged or burned, and whether the power cord is damaged or not. Observe the voltage, current, power and other parameters of the power supply to see if they are in line with the desktop computer.
2. Visual detection
Turn on the power supply, if all the indicators are not lit and the fan has no sound, there is a high possibility of power supply damage. However, the intuitive detection method is less accurate.
3. Voltage detection method
Use a multimeter to measure the output voltage of the desktop computer power supply to determine whether the voltage is within the appropriate range.
Fourth, the current detection method
Use an ammeter to detect the current of the computer power supply and judge whether the current is within the specified range.
5. Short-circuit detection method
Turn on the power and short one end of a wire to the green and black wires, and the other end to ground. If the power supply is normal, you should be able to hear the fan turning.
6. Detect the power protection function
Test the over-current protection, over-voltage protection, under-voltage protection and other functions of the desktop computer power supply to observe whether it can function normally.
7. Load detection
Connect a hard disk or optical drive to the power supply, and test the output voltage of the wires of different colors according to the steps of no-load detection to determine whether the output is normal.
To sum up, the quality of the desktop computer power supply can be judged by testing the appearance, voltage, current, short-circuit test, load test, over-current and over-voltage protection, etc.
The power module intelligent comprehensive test system is a professional system software for testing various power modules, which is used to test the performance indicators of the power supply, such as input voltage and current, output voltage and current, load capacity, power, leakage current test, etc. The power module test system is used to detect the power supply of the desktop computer, which can quickly judge whether the indicators of the power supply are normal and whether it is in line with the use of the computer.