| Rdc is not correct. Take A=20/10^6 m^2 [in sqr.m not in sqr.mm] and δ500kHz=0.0894 mm [2*√(1/500)] not 0.2*√(1/500) |
Skin depth is a term used to describe the depth at which an alternating current (AC) signal penetrates into a conductor. It is a measure of how far an AC signal can travel through a material before its amplitude decreases significantly.
Skin depth is calculated using the formula δ = √(2ρ/ωμ), where δ is the skin depth, ρ is the resistivity of the material, ω is the angular frequency of the AC signal, and μ is the permeability of the material. This formula takes into account the electrical and magnetic properties of the material.
The skin depth of a material is affected by several factors, including the frequency of the AC signal, the resistivity and permeability of the material, and the temperature of the material. Higher frequencies, lower resistivities, and higher temperatures all result in shallower skin depths.
The skin depth of a material is directly related to its AC resistance. As the skin depth decreases, the AC resistance increases. This is because a shallower skin depth means that the AC signal has to travel through more material, resulting in more resistance.
Skin depth is important in AC circuits because it affects the flow of current and the amount of resistance in a conductor. It is especially important in high-frequency circuits, where the skin depth can be very small and can significantly impact the performance of the circuit.