Jack Stone Wrote: >Abe, > Have you taken a previously unsuccessfull/successfull design and applied the > tool. Then use a NA for each power plane for a stuffed board to determine > where > the issues really are and how the results of the tool coorealate with real > life > measurements if done correctly??? I know that this is a tedious task to be > done correctly, but does provide good data as a base line. > Just asking. > jack ~ Hi Jack: To date, I have mainly applied the UltraCAD Bypass Impedance Calculator to analyze what combination of capacitors can yield a flat low PDS impedance over a wide frequency bandwidth just like what is explained in Doug Brooks paper , "ESR and Bypass Capacitor Self Resonant Behavior How to Select Bypass Caps". Your question is a good one. I hope some people who have used that tool more extensively will share their experiences. Regards, Abe ------------------------------------------------------------------ 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 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