Quick EMI solution based on the EM field distribution

The traditional EMI solutions do not directly face with the exact locations of the di/dt or dv/dt noise sources and their actual transmission pat, which results in the EMI solutions with their experience. The quick EMI solution proposed in the paper is based on the exact noise location and transmission path from the actual focused electric-magnetic field distribution in products. With further investigation on the noise behaviors in the frequency and time domains, the corresponding EMI solution can be finally specified. The real case of an e-ballast EMI issues verifies the effective of the proposed EMI solution.