ESR and Bypass Capacitor Self Resonant Behavior

[roender]

What is your opinion/experience on paralleling capacitors?
There are so many schematics showing large aluminum electrolytic capacitor in parallel with one or two smallest value polywhatever capacitor ...

 

[AndrewT]

Ask EVA first.

 

[roender]

Take a look at this
http://www.ultracad.com/esr.htm