Ryan the Telegrapher's equations still hold. Provided the material does not saturate, ignoring fringing for a rectangular section: L= u0*uR*H/X UMR has a web calculator that if I recall correctly allows you to input uR. So, for a uR of 600 and no saturation, the inductance would go up by 600X and the impedance by about 24-25X. You can see that it doesn't take much nickel to really throw things off. Steve. At 07:53 AM 5/10/2006, ryansatrom wrote: >Aubrey- > >I am well aware of the definition of permeability. However, i'm >struggling with this relationship. For example: > >Capacitance increases proportionally to dielectric contstant >(permittivity). > >So if permeability does the same to inductance as permittivity does to >capacitance, then then inductance of a signal-return path made purely >of nickel (no plating, used strictly for example) has 600 times the >inductance of the same signal-return path made from gold? > >Are you saying that is true? > > > > >------------------------------------------------------------------ >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: >//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: > //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 > ------------------------------------------------------------------ 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: //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: //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