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Encyclopedia > Litz wire

Litz wire is a special type of wire used in electronics. It consists of many thin wires, individually coated with an insulating film and braided, thus increasing the surface area of the conductor and thereby reducing the skin effect and associated power losses when used with high-frequency applications. The ratio of impedance to resistance is increased, relative to a solid conductor, resulting in a higher Q factor at these frequencies. The word originated from Litzendraht, German for woven wire. A wire is a single, usually cylindrical, elongated strand of drawn metal. ... The skin effect is the tendency of an alternating electric current to distribute itself within a conductor so that the current density near the surface of the conductor is greater than that at its core. ... Electrical impedance, or simply impedance, is a measure of opposition to a sinusoidal alternating electric current. ... Electrical resistance is a measure of the degree to which an electrical component opposes the passage of current. ... The Q factor or quality factor is a measure of the rate at which a vibrating system dissipates its energy into heat. ...


This type of wire is used to make inductors and transformers, especially for high frequency applications where the skin effect is more pronounced. Litz wire is one kind of stranded wire, but, in this case, the reason for its use is not the usual one of avoiding complete wire breakage due to material fatigue. An inductor is a passive electrical device employed in electrical circuits for its property of inductance. ... Three-phase pole-mounted step-down transformer. ... This article is in need of attention from an expert on the subject. ...


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  Results from FactBites:
 
Litz wire - Patent 4546210 (1920 words)
A litz wire according to claim 4, wherein said second insulating layer is covered over and outer surface thereof with a second adhesive layer.
A litz wire according to claim 4, wherein said conductor is formed of electrically conductive metal.
In the litz wire used, the.DELTA.d is decreased because the film ratio A is substantially constant with a decrease of the diameter de of the strand conductor.
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