Tamir,
Try www.ultracad.com and follow the links.
Geoff Layhe
www.lamar-uk.co.uk

> ----------
> From:         Tamir Ben Shoshan[SMTP:[log in to unmask]]
> Reply To:     [log in to unmask]
> Sent:         15 March 2001 09:33
> To:   [log in to unmask]
> Subject:      [TN] Impedance equation
>
> Hello,
> We are having new design that force us to work with a trace with different
> width to keep the required impedance.
> Could you please suggest where can I find the Impedance equation to
> calculate it manually.
> Regards, Tamir.
>
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