Finally, to depress Electromagnetic Interference (EMI) and achieve Electromagnetic Compatibility (EMC), EMI filter is designed at input of switching power supplyspecially.

• 最后为降低电磁干扰(Electromagnetic Interference，EMI)，达到电磁兼容(Electromagnetic Compatibility，EMC)，特设计出开关电源电路输入端的EMI滤波电路。