Electricity in real life behaves differently from what is expected on paper, making switch-mode power supplies (SMPS) challenging to build and troubleshoot
The rectifier diodes and switching transistors in SMPS can generate noise, but proper component selection and reducing transition time can help limit it
Optimizing component properties and managing non-ideal capacitance can minimize noise in power supplies
FesZ Electronis provides a comprehensive video discussing the challenges and techniques to reduce noise in SMPS