Where does Electromagnetic Interference come from?
Electromagnetic interference (EMI) can manifest in a variety of ways and the emission source is usually frequency dependent. The interference can be conducted, through mains cables and earthing connections, or radiated. Most electronic hardware contains elements which act in a similar manner to an antenna, such as cables, pcb tracks, internal wiring and mechanical structures. These elements can unintentionally transfer energy via electric, magnetic or electromagnetic fields, which couple with other circuits.
