Displayed here are the results for radiated emissions from 0.15 to 30 MHz using the different noise countermeasurements. The graph on the left is the result of using all the filters available, and the graphs on the right are the results of using individual filters. As shown in the spectrum, low pass filters have trouble reducing noise above 20 MHz, while common mode choke coils can help reduce the noise. A shield can also help reduce noise under 20 MHz. By using both the low pass filter and the common mode choke coil along with the shield, EMI noise is reduced to meet CISPR 25 Class 5.