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From: al@cs.strath.ac.uk (Alan Lorimer)
Newsgroups: sci.electronics
Subject: Re: Rust Prevention (Cathodic Protection)
Message-ID: <1236@stracs.cs.strath.ac.uk>
Date: 14 Oct 88 08:25:20 GMT
Reply-To: al@cs.strath.ac.uk (Alan Lorimer)
Organization: Comp. Sci. Dept., Strathclyde Univ., Scotland.
Lines: 50


In article <1450@kodak.UUCP> ornitz@kodak.UUCP (barry ornitz) writes:
>In article <3596@s.cc.purdue.edu> aic@s.cc.purdue.edu (George A. Basar) writes:
>>    I am looking for some pointers to information on the subject of
>>anodic/cathodic(terminology please) system of rust prevention/inhibition.
.
.
.
>Similar questions to these were posted to rec.autos several months ago.  I do
>not see how electrolytic protection (cathodic protection) is applicable to
>automobiles as they are not generally in a conductive or electrolytic
>environment.
.
.
I don't think this is quite right - was not the whole reason for
switching cars from positive earth systems to negative earth systems
purely to provide a degree of cathodic protection for the bodywork, since
positive earth systems actually encouraged the vehicle to rust.

I remember a circuit which was designed to protect your vehicle:


        _______________       _______________               
        |             |       |             |        
      __|_            +  12V  -            _|__
    _/    \__         |-------|          _/    \__
   |O------O-|        |_______|         |O------O-|

Someone else's car			Your Car

Go on try it on your neighbour's car :-)

Regards,

Al.
-- 
____________________________________________________________________________
Alan G. Lorimer, Strathclyde University, 26 Richmond Street, Glasgow G1 1XH.
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