FreeLists / si-list / [SI-LIST] Re: Five Wire Formula in Wadell

[Christian Schuster <cschuste@xxxxxxxxxx>]

Hey Dan - thanks a lot!

That looks much more reasonable, i.e. it's a lower impedance 
than for the corresponding two wire case.

BTW, maybe you want to let B.C. Wadell know what you found ...

Best regards,

Christian Schuster
IBM 







"Swanson, Dan" <Dan_Swanson@xxxxxxxxxxxx>
05/02/2003 11:59 AM
 
        To:     Christian Schuster/Watson/IBM@IBMUS, si-list@xxxxxxxxxxxxx
        cc: 
        Subject:        RE: [SI-LIST] Five Wire Formula in Wadell


Leading term should be 173/sqrt(Er) and its log10, not ln.

I checked it very quickly for d=10  D=100  Er=1

2D FEM solver =173 ohms, corrected formula =178 ohms.

I don't have my Ref Data book here, its at home.

Dan

Dan Swanson                              EMAIL: d.swanson@xxxxxxxx
Forem USA                                                PHONE:  
978-834-4085
37 South Hunt Road               FAX:            978-388-7077
Amesbury, MA  01913






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