Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

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.

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.

See also Wikipedia on skin effect.

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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 cannot attest to the fact that it is indeed a…
Math Keeps Me Busy
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Why isn't there a non-conducting core wire for high-frequency coil applications

Background The commonly known skin effect formulas are derived and only apply to solid conductors. The commonly used "skin depth" only applies in these cases. It is for this reason that in some applications tubes are used, as these are much more…
Edgar Brown
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Why skin effect happens at the center of a conductor?

I was reading an article about Skin Effect. I know what skin effect is, but I wanted to know what causes it. Why is the back EMF strongest at the center? Why is it not distributed uniformly at the cross section area of the conductor? so that, the…
Michael George
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Skin effect for pulse current

I've just bought some 6mm^2 copper wire for my project where I will have large pulse currents - ~500A peak (driving very large Xenon flash bulbs, 1000J pulse in 2ms). But I know that skin effect make it useless to use thick wires on high frequency,…
BarsMonster
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Does stranded wire reduce resistance from skin effect when strands are not insulated?

I've seen many discussions where people mention multi-strand wire improving conductivity when skin effect is a concern, but I often see Litz wire mentioned in these discussions. Litz wire contains individually insulated strands of wire. I haven't…
JamesHoux
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Does skin effect appear in home wires?

A technician said: Its better to use a solid cables for homes (not stranded cables). I did not use any calculations but I think that stranded cables are better due to skin effect. We use 220V / 50Hz. Is 50Hz too low frequency so that we can consider…
Michael George
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Intuitive explanation of Skin Effect?

I'm trying to wrap my head round Skin Depth, we've derived the wave equation from Maxwell's equations, using the conditions that it's a "good conductor" ρ = 0, σ >> ωε and therefore you get that the current density decreases exponentially from its…
geeeeeeek
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Measured Q factor of LC circuit does not correspond with calculated and simulated

Still having a problem with measured value of Q factor of parallel LC circuit. My measurememt setup looks like on the picture below. I use Function generator SFG-1003 and Oscilloscope Rohde-Schwarz RTB2002. My LC circuit consists of: L= 33,4 uH R=…
Kols
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Does solid/multi-stranded/Litz wire make a difference in binary serial output?

I'm using two shift registers to control 16 digital outputs using only 3 pins on my microcontroller. The parallel outputs carry <= 20 mA DC, their sole purpose is to power LEDs. My microcontroller pins do the following: One is a serial binary data…
Emil Lundberg
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Is the skin effect a factor for low-current AC applications?

Another way to phrase the question might be, "Is the skin effect proportional to current flow?" I am only vaguely familiar with the skin effect, so I read up on the subject to learn more about it, purely for academic reasons. (I don't currently have…
JYelton
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Parasitic Inductance

when we say that in a wire there is a parasitic inductance, what is its cause? Is it the skin effect of the wire, the magnetic flux (generated by the current) through the surface of the total circuit in which the wire is inserted, or others? I was…
Kinka-Byo
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When high frequency current goes through a superconductor, does it still radiate off like it would with copper?

I've been thinking about the skin effect and that got me thinking: When high frequency current goes through a superconductor, does it still radiate off like it would with copper?
Max
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How do electrical body fat detector work?

I would like to build me own electrical body fact calculator from a microcontroller (the Arduino), but I would like to know how does it work. I have a 5V analog reader, So I guess I sould calculate the current passing through my skin compared to a 0…
Napster
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If charges flow along the surface of a conductor, why is resistance a function of cross-sectional area?

The skin effect dictates that charges tend to flow along the surface of a conductor. And yet resistance of a material is equal to resistivity multiplied by the cross-sectional area of the material divided by the length. Shouldn't it be based on the…
TheEnvironmentalist
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For a nerve-teste circuit, what causes the shock at low voltage?

As a bit of a weird test for my new 555 IC, I have been thinking of stepping down a 9V PP3 battery to five or so volts and creating a square wave @ ~100Hz and shocking my finger. I understand that a possible breakdown voltage of dry skin is fairly…
Hobbyist
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