Re: Rectifying Action? Might it be that simple?
Tesla List wrote:
> Original Poster: Hollmike-at-aol-dot-com
> > Mike's thought of the oxide barrier in
> > conjunction with the Cu possibly creating a rectification is interesting.
> Reinhard, Bart, all,
> This wasn't actually Mike's thought. I was just remembering that
> from the earlier posts on this subject suggested that. The only thing I
> could think of that supports this notion was that aluminum electrolytic
> capacitors are polarized due to this oxide layer and conduct in one
> It may be simply that when the spark is initiated, a pit forms in the
> aluminum that exposes a conductive surface. The exposed surface may then
> quickly reoxidize and create a resistance that helps to quench the spark
> the voltage drops at a notch(was this mentioned in earlier posts?).
> My only conclusion is that this is definitely worth investigation :o)
The rectification is a function of the terminal geometry, not the
material. Any aluminum oxide layer would be much too thin to withstand
the voltages involved.