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Re: LF: Need info on Litz wire

To: [email protected]
Subject: Re: LF: Need info on Litz wire
From: "Rik Strobbe" <[email protected]>
Date: Tue, 12 Feb 2002 09:22:31
In-reply-to: <[email protected]>
Reply-to: [email protected]
Sender: <[email protected]>
Could some please point me to a good explanation of  how litz wire works?
As frequency rises the current through a wire tends to flow only close to
the surface, the so called skin-effect. On 136kHz the skin-depht is about
0.17mm (for copper-wire), so for any wire thicker than 0.35mm there will
flow little or no current in the centre of a the wire. For that reason it
is much better to use a number of thin wires in parallel instead on a
single thick wire.
Litz wire contains a number of thin wires that are isolated from each
other, reducing the skin-effect and thus allowing to construct high-Q coils
with a relative small diameter wire.
If you want to know more or learn about the specifications have a look at :
http://www.wiretron.com/litz.html

73, Rik  ON7YD



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