Thank you for all of the great info! I think I will go with 1in 22mil for now. If it ends up getting too hot or start running some serious power, I'll just have to go upgrade the primary. I think it will be OK for the time being.
> Date: Fri, 19 Dec 2014 05:51:38 -0800
> From: jimlux@xxxxxxxxxxxxx
> To: tesla@xxxxxxxxxx
> Subject: Re: [TCML] Ribbon Primary - What size?
>
> On 12/18/14, 10:22 PM, Carl wrote:
> > Hey--
> >
> > There's also an effect similar to the skin effect that pushes the
> > current toward the edges of the strip. I don't know how to calculate
> > it, but as a guess I would make the strip 1.5x or 1.7x wider that a
> > calculation with an even current distribution would give. The best idea
> > is to use Litz wire, but that would put you in the rarefied atmosphere
> > of the truly hard core.
> >
> > ---
>
>
> Google "skin depth calculator".. I use the one at Microwaves101.com
>
> But, 8 mils (0.008") for copper at 100 kHz. Skin depth goes down as the
> square root of frequency, so at 300kHz it's 0.0046" (.008/sqrt(3))
>
> I think Litz wire wouldn't be very cost effective. You could probably
> get a lower AC resistance, cheaper, by just going to a flat ribbon
> rather than a round wire or tube.
>
>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla