Skin and Proximity Effect.

Patrick, Wed Mar 06 2019, 04:25AM

Im having trouble understanding skin and proximity effect.

Ive made this pic for the skin effect question:
Link2
Re: Skin and Proximity Effect.
Patrick, Wed Mar 06 2019, 05:01AM

im havin trouble posting? does this show up ?

Link2
Re: Skin and Proximity Effect.
Paul Benham, Wed Mar 06 2019, 07:37PM

Yes the pictures showed when I clicked on the link.

Skin depth varies depending on frequency and how conductive the material is.

Proximity effects are something else, not sure they are related. Usually in RF circuits you would not place anything within a distance equal to the coil diameter to minimise reduction in the Q of the coil, I.e. An increase in its losses.

I hope this helps,

Regards

Paul
Re: Skin and Proximity Effect.
2Spoons, Wed Mar 06 2019, 09:02PM

Actually they are related, in that skin effect is the result of eddy currents generated by a conductor's own AC magnetic field, while proximity effect is the result of eddy currents generated by the AC magnetic field of adjacent conductors.
Re: Skin and Proximity Effect.
Paul Benham, Thu Mar 07 2019, 06:29PM

That was a good explanation, thanks for that.

Paul.
Re: Skin and Proximity Effect.
2Spoons, Fri Mar 08 2019, 02:42AM

Just summarising two whole pages of wikipedia in one sentence wink
Re: Skin and Proximity Effect.
Patrick, Fri Mar 08 2019, 05:07AM

yes the great wiki is where i usually start.