Additional protective devices
Electronics shields

In the title of this chapter 6 , phrasal “protective devices” involves component or topology, improving the shielding effectiveness of electronic equipment, however, such device don’t behave like a topological barrier. Let’s suppose that ground contact 6a is removed, thus, current I _B diverted through the cable shield, falls strongly, and the shielding effectiveness is well better that was under initial topology. Let’s imagine now, that cable shielding opened at end...