[sdiy] Correction of one electrolytic cap related thing

[Bob Weigel]

It's been a while since I reviewed the intricate details of electrolytic 
capacitor construction and Harry reminds me that I generalized an aspect 
in referring to 'electrolyte'.  I recall now the details more clearly 
and as Harry notes:

"I think you may be confusing 'electrolyte'
with 'dielectric' in aluminum electrolytic caps.  The
electrolyte does not act as the dielectric
(insulation) between the plates... it causes an
aluminum oxide layer to form between the plates. This
aluminum oxide IS the dielectric, and it needs to be
grown 'thicker' for higher voltage caps. The limit for
the dielectric is usually 450VDC or so (maybe 550VDC
in some very rare processes."

However the points I made about the nature of dielectric materials in general and now no matter how fast you alter the field on them within the rated voltage limits will you 'hurt' the dielectric material still applies I believe.  Again..if anyone has link to some kind of real research in that area I'd maybe love to see it :-).  I say 'maybe' because I've done it so many times and nothing has shown any damage from it...I'm thinking if there is some effect it would take a LOT of discharges before it starts to actually affect the performance in any way. 

-Bob who is always right unless he's wrong in which case a note of correction that makes some sense will usually result in a retraction/affirmation.  :-)