RE: [SI-LIST] : skin effect

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From: Sunil Kumar (sunilb@cdotb.ernet.in)
Date: Thu Aug 31 2000 - 11:14:43 PDT


Brian..

Perimeter=2(width+height)

So effect of changing height or width is same. Have I misunderstood
something?

Sunil

On Thu, 31 Aug 2000, Baikuan Wang wrote:

> Hi, Muhammad,
>
> Skin effect means that most of the current flows along the surface of the
> conductor.
> In this way, the effecient area current goes through is more dependent on
> the perimeter rather than the real
> area (Height x Width). Therefore, inreasing width is more effecient that
> increasing height in view of reducing
> the resistance of traces.
>
> Regards.
>
> Brian
> -----Original Message-----
> From: owner-si-list@silab.eng.sun.com
> [mailto:owner-si-list@silab.eng.sun.com]On Behalf Of Muhammad S. Sagarwala
> Sent: Thursday, August 31, 2000 9:45 AM
> To: si-list@silab.eng.sun.com
> Subject: [SI-LIST] : skin effect
>
>
> Hello Si Gurus,
>
> I just had an interesting discussion with my boss on "skin effect on pcb
> traces".
> I was of the opinion that increasing the trace thickness from 1/2 oz. to
> 1oz. would help reduce the
> skin effect but according to him skin effect does not reduce significantly
> with the increase in trace thickness.
> He was of the opinion ( and also had some data to back him up) that skin
> effect is more dependent on the
> width of the trace.
>
> I always thought that if one increases the overall perimeter of the pcb
> trace - regardless of whether it is done by
> increasing the width or increasing the thickness - the skin effect would
> reduce. I would appreciate if somebody
> could come up with a better explanation...
>
> Muhammad
>
> p.s.: when we talked about pcb traces we were talking about striplines in
> particular...
>
>
>
>
>
> Muhammad S. Sagarwala
> Design Engineer
> Schlumberger SABER
> Ph. (408) 586 7065
> Fax (408) 586 4668
>
>

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