<div class="gmail_quote">On Mon, Apr 13, 2009 at 10:23 AM, Todd Walton <span dir="ltr"><<a href="mailto:tdwalton@gmail.com">tdwalton@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im"><br>
</div>Wikipedia says the skin effect is due to alternating current.<br>
Specifically, "Skin effect is due to eddy currents set up by the AC<br>
current". <a href="http://en.wikipedia.org/wiki/Skin_effect" target="_blank">http://en.wikipedia.org/wiki/Skin_effect</a><br>
<br>
So, DC wouldn't have it.<br>
<div class="im"></div></blockquote></div><br>I concur. When I was doing electronics work, we often had to push a lot of power around in the 100 kHz region, and the only practical way we could find to do this was to use Litz wire. Litz wire is a bundle of smaller insulated wires, so that most of the it, even at the core of the bundle, can still be the "skin".<br>
<br><a href="http://en.wikipedia.org/wiki/Litz_wire">http://en.wikipedia.org/wiki/Litz_wire</a><br>