Talking about EMC's knowledge of capacitor and inductor device selection

We must also consider these parameters and these features when designing. Let's make a simple comparison. Because ceramic capacitors are internally connected in parallel, the ESR value is also low. Tantalum capacitors are like this. Aluminum electrolysis is like this. In this case, we can use a test, the power supply comes from here, here uses a filtered capacitor. Of course, what does this mean? This is a ceramic with a lower ESR value and a better filtering effect. Of course, everyone said, is it true that some aluminum electrolysis can be replaced by ceramics? It can't be said that the power supply needs a lot of capacity, and you can't change it. If you use it for filtering, you can use a small capacity. Ceramic for large capacity aluminum electrolysis.