electrical fast transient (EMI) (EFT)
Electrical Fast Transients(EFT) are interference pulses that can affect electronic circuits.
Like the Lightning Electromagnetic Pulse( LEMP), the EFT pulse is triggered by a switching operation and occurs as a pulse packet( burst). It is triggered by the bouncing of relays or the switching of mechanical switches and is in the kilohertz range in terms of frequency.
The interference induced in analog and digital circuits can trigger malfunctions in them.