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This type of shielding helps prevent EMI from entering or exiting individual pairs and also protects neighboring pairs from crosstalk. Overall shield (F/UTP, S/UTP, and SF/UTP): Overall foil, braided shield or braiding with foil across all of the pairs within the 100 ohm twisted pair cable. Common names: foiled twisted pair, shielded twisted ...
This shield is usually covered by an outermost layer of the cable. Common types of cable shielding can most broadly be categorized as foil type (often utilizing a metallised film), contraspiralling wire strands (braided or unbraided) or both. [2] A longitudinal wire may be necessary with dielectric spiral foils to short out each turn. [1]
The shield might be just two braids, but it is more common now to have a thin foil shield covered by a wire braid. Some cables may invest in more than two shield layers, such as "quad-shield", which uses four alternating layers of foil and braid. Other shield designs sacrifice flexibility for better performance; some shields are a solid metal tube.
1925 braiding machine in action The smallest braiding machine consists of two horn gears and three bobbins. This produces a flat, 3-strand braid. A braiding machine is a device that interlaces three or more strands of yarn or wire to create a variety of materials, including rope, reinforced hose, covered power cords, and some types of lace.
A synthetic adsorbable suture material. Braided synthetic adsorbable multifilament made of polyglycolic acid and coated with N-laurin and L-lysine, which render the thread extremely smooth, soft and knot safe. A synthetic adsorbable suture material. Monofilament synthetic absorbable suture, prepared from the polyester, poly (p-dioxanone ...
Historically, the metallic thread was constructed by wrapping a metal strip around a fiber core (cotton or silk), often in such a way as to reveal the color of the fiber core to enhance visual quality of the decoration. [5] Ancient textiles and clothing woven from wholly or partly gold threads is sometimes referred to as cloth of gold.
A braided wire consists of a number of small strands of wire braided together. [10] Braided wires do not break easily when flexed. Braided wires are often suitable as an electromagnetic shield in noise-reduction cables. The outer conductor of this miniature coaxial cable (RG 58 type) is made of braided wire.
In electrical and electronic cables, braid is a tubular sheath made of braided strands of metal placed around a central cable for shielding against electromagnetic interference. The braid is grounded while the central conductor(s) carries the signal. The braid may be used in addition to a foil jacket to increase shielding and durability.