EFT OVERVIEW & SUPPRESSION OF EFT INTERFERENCE
A common transient interference in electrical and electromechanical equipment, namely EFT, is generated by inductive devices such as relays, motors, and transformers. Generally speaking, these devices form part of the system, so interference is often generated inside the system. Designers should pay enough attention to this. There are two mechanisms by which the switch contacts are broken down and turned on (blue light can be seen): glow discharge and arc discharge.Glow discharge When the intensity of the electric field applied [...]