1.2 PROTECTION FROM TRANSITORY PHENOMENON

To reduce the atmospheric discharged effect is appealed to the devices that have a short-circuit through the earth the transitory current on the lines.
The ESD discharged protection consists in the removing the circuits discharged current that must be protected deviating for example the route or reducing the pairing between them and the discharged current route.
Some protection interventions of the electrostatics discharged are:

• ground all the exposed metallics parts ;
• if the circuits are closed in a continuous metallic bin, earth this in just a point. ;
• connect the circuits ground in just a point of the bin that closes them.;
• in the pairing capacity bin-intern circuits is high add a screen between the two of them ;
• the connecting between the intern circuits ground and the bin and the bin ground point is preferably to be in the proximity of the lines entrances. ;
• the bin entrance/exit lines must be screen with the connection screen-bin performed on all the circumference.