Abstract
In this study, a traditional-wound vs. a coaxial-wound centre-tapped converter was built. This was done to investigate the different winding techniques concerning EMI in converters. The reason for this study is to understand EMI/EMC (Electromagnetic Compatibility) from an IoT (Internet of Things) power supply perspective. In the future billions of IoT devices will be used in close proximity to each other hence EMC becomes an important issue. The objective is to determine which winding technique minimises conducted emissions on the power lines. Different EMI mechanisms are investigated. Conducted emissions testing was done on the power lines to determine the level of EMI. Methods of reducing EMI were investigated, this includes a guide on a common mode filter design. This study should assist in helping designers understand EMI generated in power converters and aid in the reduction of noise to achieve EMC.