View source for EMC - Coupling mechanisms and counter-measures

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An EM interference phenomenon may be summed up in {{FigureRef|R29}} below. 

{{FigImage|DB422795_EN|svg|R29|EM interference phenomenon}}

The different sources of disturbances are: 
*'''Radio-frequency emissions'''
** Wireless communication systems (radio, TV, CB, radio telephones, remote controls)
** Radar
* '''Electrical equipment'''
** High-power industrial equipment (induction furnaces, welding machines, stator control systems)
** Office equipment (computers and electronic circuits, photocopy machines, large monitors)
** Discharge lamps (neon, fluorescent, flash, etc.)
** Electromechanical components (relays, contactors, solenoids, current interruption devices) 
* '''Power systems'''
** Power transmission and distribution systems
** Electrical transportation systems 
* '''Lightning''' 
* '''Electrostatic discharges (ESD)''' 
* '''Electromagnetic nuclear pulses (EMNP)'''

The potential victims are: 
*Radio and television receivers, radar, wireless communication systems 
*Analogue systems (sensors, measurement acquisition, amplifiers, monitors) 
*Digital systems (computers, computer communications, peripheral equipment)

The different types of coupling are: 
*Common-mode impedance (galvanic) coupling 
*Capacitive coupling 
*Inductive coupling 
*Radiated coupling (cable to cable, field to cable, antenna to antenna)<br>

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