Electrical Current Does Prevent Corrosion?

[T.Jackson]

I think many people are sceptically about the thought of electrical current being used to prevent rust. Until recently I was one of them. A few months back, after digging out half a dozen or so rather large printed circuit boards that I had in storage for almost 10yrs, arcade game boards that were working perfectly before they went into storage now ceased to work! On quick inspection I found lots and lots of corrosion!

Ironically, during the course of those 10yrs I took one of them out periodically, say every couple of months or so, and fired it up! I ran a short dose of electrical current through it and then placed it back in storage right along side of the others. Guess what? -- it's the only one that didn't have any rust and as a result still works! So there you have it, 6 boards that are all dead because of corrosion and 1 board that's in the same condition as it was 10yrs ago.

Gotta make you wonder -- maybe the long debated claim of electrical rust prevention isn't all that 'hocus-pocus' after all...