Good Morning All
We run Conduction emission Test on Lab with the Line filter and without the line filter. Product was 230V 16A welding Power supply. Below are the graph with line filter and without Line filter.
Question is even with Filter Coonecting I am getting failure on High Frequency Side.(around 22 Mhz to 30Mhz), I tried with Different-Different Core(All most of core manufactures with Ferrite and Nanocrytalline Materials), No of turns, Changing Cx and Cy Value , Single filter and double stage filter, Stack up the Cores Alos. Even with all tried I have the same problem of noise at same frequency.
Please suggest some method to suppress this high frequency noise, I am going next again for lab Testing.