What is the main function of EMI circuit?

What is the main function of EMI circuit?

The function of EMI circuit is to filter out all kinds of interference signals from the power grid and prevent

the high-frequency interference channeling power grid formed by the power switch circuit. EMI is an important part of the CCC certification.

Misunderstanding of power supply:

1: The rated power of the power supply should be small?

The power consumption is determined by the power consumption of the platform, and has nothing to do with the power supply size.

If the power supply is too small, it will Unable to start.

2: Power supply to choose the full module?

The whole module group is only concerned with wire, more convenient line management, and good or bad have nothing to do.

3: Misunderstand conversion rate,

Normal power supply, rated 450W. Can output 450W, 80% conversion rate means that the computer consumes 450W,

the total power consumption of the home meter is 450÷80%=562W

4: Choose the maximum rated power of 2000W, small worry?

There is no direct relationship between power supply and rated power.

Power supply should be specific to a certain brand and a certain model, not by looking at the surface parameters.