The role of shielded wire: to prevent interference signals from entering the inner layer, conductor interference and reduce the loss of transmission signals.
The shielded wire isolates the electromagnetic field noise source from the sensitive equipment and cuts off the propagation path of the noise source. Shielding is divided into active shielding and passive shielding. The purpose of active shielding is to prevent the noise source from radiating outward, which is the shielding of the noise source; the purpose of passive shielding is to prevent the sensitive equipment from being interfered by the noise source, which is the shielding of the sensitive equipment.
Structure: (ordinary) insulating layer + shielding layer + wire; (advanced) insulating layer + shielding layer + signal wire + shielding layer grounding wire
Note: When selecting shielded wire, the shielding layer grounding wire The insulating layer of the shielding layer grounding wire has a conductive function and can be connected to the shielding layer (with a certain resistance).