In summary, EMI and RFI are either conducted or radiated electromagnetic disturbances that can have a negative impact on product performance. Common sources of interference are motors, switching power supplies, variable frequency drives, and cooling fans. Controlling EMI/RFI begins with design and layout of the wire routing, proper shielding, and the use of filters. For additional information, please contact the DigiKey technical team or visit www.CurtisInd.com.