Questions tagged [skin-effect]
Anything related to skin effect, i.e. the physical phenomenon where the effective resistance that a conductor presents to an alternating current flowing through it increases with its frequency.
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Skin effect of wires with increasing frequency
When wiring RF inductors, how does skin effect affect the signal when larger wire (i.e. 24 AWG compared to 38 AWG) is used?
For context, I am building an AM radio(frequencies from 72 kHz to 1.3 MHz) ...
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How to use skin depth
Do you use skin depth to determine the minimum thickness of your conductor? In other words, if I calculate skin depth to be 200 microns at the lowest frequency, should my wire, at a minimum, be 200 ...
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Confused about skin effect
Why skin effect is respected when it comes to transformers but not to filters, even when they are dealing with same high frequencies?
For example, in full bridge SMPS, with more than 100 kHz, we found ...
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Busbars carrying uneven current due to proximity effect?
I think this must be the most naive question that I am going to ask. I now doubt on my knowledge of the electrical engineering that I have learned throughout my acadmics.
We have a situation, wherein ...
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How to calculate the size of copper strip with high current and high frequency?
We can easily find the recommended cross-sectional area of copper wire when the current is DC.
But when the frequency is high, e.g., 13.56MHz, how could we calculate a suitable size of copper strip to ...
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In what direction does skin effect take place?
I'm working with some problems with coaxial cylinders and the currents driven in those when considering high frequencies. In such cases, the skin depth has to be taken into consideration.
One thing I ...
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AC - impedance for a coaxial cable
Problem
I want to calculate the AC impedance for a coaxial cable. A rough image is presented below:
Because we have an AC current, suppose that the skin depth, which we can define as \$\delta\$ is ...
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How does the Skin Effect at RF frequencies affect wire ampacity?
Through simulation we can find the current going through an inductor that is part of a filter network and this 1-sheet paper points out that ampacity diminishes with higher frequency because of the ...
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Does skin effect increase the eddy current losses inside magnetic core?
From wikipedia -Ref1
The skin effect also reduces the effective thickness of laminations in power transformers, increasing their losses.
From eddy current article in wikipedia-Ref2
"Eddy ...
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How is current distributed in the cross-section of a wire? Skin effect for motor windings?
The startup h3x is claiming to have designed 3d printed coils and other innovations increasing the power density of electric motors by a factor of 3.
https://www.h3x.tech/#amcoils
They mention fill ...
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Cable shielding adequate for video, but not audio frequencies
I am no expert in audio equipment, but to educate myself I have been studying. In the process, I came across a video which tests the audio frequency shielding of a purported shielded video cable. (I ...
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Losses over frequency for microstrip vs. coplanar waveguide
At mmwave frequencies, coplanar waveguide transmission lines generally have lower loss than microstrip. What accounts for this, besides radiated losses? Or is the difference mostly related to the ...
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Microstrip skin effect
I've read that at high AC frequencies, current concentrates near the surface of a conductor, which is known as the skin effect. Does this also mean that current concentrates near the edge of thin ...
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Skin depth calculation for non-sinusoidal currents
I have some questions regarding the skin depth of wires.
In this forum it was already asked how the skin depth can be determined for a square voltage (e.g. inductor voltage of buck-converters) (link: ...
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Skin effect at high voltage
I recently made a slayer exciter circuit in order to determine the resonant frequency of my secondary coil of my yet to build SSTC.
When running the slayer exciter at 40V DC the circuit consumes ...
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