On Mar 9, 10:39*pm, John Fields wrote:
On Sun, 9 Mar 2008 07:14:31 -0700 (PDT), wrote:
On Mar 9, 2:40*pm, John Fields wrote:
On Sun, 9 Mar 2008 04:42:53 -0700 (PDT), wrote:
On Mar 9, 10:47*am, "Michael*A.*Terrell"
wrote:
Hello folks,

I am getting cheap these days, I am trying to cut corner by tripling the
capacitance in the capacitor, is this possible? *I have heard that it's
possible. *Some people have done it successfully. *I am just wondering if
any of you smart dumbass can help.

If you weren't quite the ill-informed idiot that you are, you'd know
that the dielectric in an electrolytic capacitor is formed by the
electrolytic oxidation of the surface of the aluminium foil the forms
the plates of the capacitor.

---
LOL, hook, line, and sinker! :

http://www.vcomp.co.uk/tech_tips/ref...eform_caps.htm

If you weren't another uninformed idiot, you'd realise that the
proposition is at least potentionaly rational, even though Michael
Terrell is the source. It would be a daft thing to do, but could work,
after a fashion.

---
As you now realize, Michael _wasn't the source, and I disagree with
your proposition that it would be potentially rational.

The reason? *Simple.

With a power supply connected opposite to the polarity indicated on
the capacitor, the anode oxide would be reduced but, at the same
time, the cathode would be oxidized leaving the total thickness of
the dielectric about the same, consequently keeping the capacitance
about the same.

I'm running a series of experiments to determine if that's the case,
and I'll post the results when I'm done.

If Wikipedia is right

http://en.wikipedia.org/wiki/Electrolytic_capacitor

then so are you. It isn't a foregone conclusion - some electrolytic
capacitor manufacturers might not use pure aluminium for the counter-
foil and it wouldn't take much of the wrong metal oxide in the
oxidised film to make it conductive enough to be irrelevant.

Best of luck with your experiments.

--
Bill Sloman, Nijhmegen