What is the power rating? What is the workflow of the power supply

Question 2: What is the rated power?

A: The rated power refers to the maximum load of the power supply under stable and continuous operation. The rated power represents the true load capacity of a power supply. For example, the rated power of a power supply is 300W, which means daily. When working continuously for 24 hours and 365 days per year, the sum of all loads should not exceed 300W. In fact, the power supply has certain redundancy. For example, the power supply with rated power of 300W can work stably at 310W, but try not to exceed the rated power. Otherwise, the power supply or other computer components may be burnt due to overcurrent. .

Question 1: What is the workflow of the power supply?

Answer: When the mains enters the power supply, the high-voltage jiao current (220V) becomes a high-voltage pulsed direct current after being rectified by the full-bridge diode, and then becomes a high-voltage direct current after being filtered by the capacitor. At this time, the control circuit controls the high-power switching transistor to deliver the high-voltage direct current to the primary of the high-frequency transformer in batches according to a certain high-frequency frequency. Then, the step-down high-frequency low-voltage jiao current output from the secondary coil is converted into a direct current of a low-voltage and high-current that can operate the computer through rectification and filtering.