What are twins?

Twin-Lead is a cable with two wires that are arranged symmetrically parallel; It is commonly used as a cable of antenna receiver, which carries very low power in a balanced configuration. It looks like a two -wire cable ribbon with a larger fixed pitch between the centers of two wires. Wire size and gap between determining the transmission line of radio frequency transmission. This cable is still very used for simplicity at the end of the cable, which is usually connected to a balanced antenna at the other end. Ending on the antenna side is also a simple type of screw or is permanently formed for the antenna. The disadvantage is the lack of shielding in the cable, because there are two parallel cables with a signal. Unlike the double line, the unbalanced coaxial cable has a shield that surrounds an inner wire that carries a signal. The advantages of this cable are the cost per unit of length and simplicity of ending.

double cablesEdges are similar to cables ribbons, although the cables ribbons have wires that are very close to the second wire. Ribbons are often used in digital buses that carry voltage between 0 and 5 volts (V) or between 0 and 3 V depending on the logical family of the bus driver. Some digital buses use differential type outputs and inputs that use twisted pairs that allow faster bit speeds and better immunity to external electromagnetic interference.

Early twin cables looked like a ladder in which the materials were similar to the insulators that held both wires in place. In the transmitter applications, the separation between two wires of this cable increases to allow higher voltage and is therefore sent to the antenna by higher power. Most radio transmitters use an intended output frequency power power amplifier, which uses unbalanced to a balanced transformer to control transmission. An antenna that connects to the transmission pipe is aboutBSEKLY LOK, DIPOLO or variation of loop and dipole antenna.

For systems of receivers of transmitted receivers, an antenna with a double line works very well, even if the receiver is far from the broadcast station. The capacitance between two wires of parallel running wires of double guide helps to alleviate any signal that can get to the receiver by invoking directly into two -color. The result is usually a longitudinal current that cancels because the receiver extracts the balanced output.