Steve, Could you please clarify? Edi=20 > -----Original Message----- > From: steve weir [mailto:weirsi@xxxxxxxxxx] > Sent: Monday, November 28, 2005 4:49 PM > To: Edi Fraiman; si-list@xxxxxxxxxxxxx > Subject: Re: [SI-LIST] Effective impedance of a uniformly loaded bus >=20 > Edi, your understanding of C' is fine, but your conclusion is not quite > right. Think in terms of impedance continuity. >=20 > Steve. >=20 > At 09:01 AM 11/28/2005 +0200, Edi Fraiman wrote: > >Hello experts, > > > >I have question regarding formula C'=3D3D Cline + NCload/length and = Z' =3D3D > >(L/C')^1/2 ("A Handbook of Black Magic" Paragraph 4.4.3.1). > > > >If I design trace with several loads than according to the formula I can > >conclude next statement: > >Longest trace cause of reducing in total capacitance C' and increase the > >Z'. > > > >So, long trace help to driver drive loads (impedance is larger). > >I fill confuse, everyone knows that long trace is not good for SI. > >=3D20 > >Could you please clear me this issue? > > > > =3D20 > > > >Best Regards, > > > >Edi Fraiman > >------------------------------------------------------------------ > >To unsubscribe from si-list: > >si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > > >or to administer your membership from a web page, go to: > >http://www.freelists.org/webpage/si-list > > > >For help: > >si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > > >List FAQ wiki page is located at: > > http://si-list.org/wiki/wiki.pl?Si-List_FAQ > > > >List technical documents are available at: > > http://www.si-list.org > > > >List archives are viewable at: > > http://www.freelists.org/archives/si-list > >or at our remote archives: > > http://groups.yahoo.com/group/si-list/messages > >Old (prior to June 6, 2001) list archives are viewable at: > > http://www.qsl.net/wb6tpu > > >=20 ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: http://www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: http://www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu