On Fri, 14 Nov 2003, Daniel L. Katz wrote:

> then we have our coolant level electrodes. note that that system uses AC
> as a dodge around the failure of ohms law for DC.

Actually, I think they use AC because otherwise one of the electrodes
would tend to plate out into the coolant.  This is how electroplating
works.  Put a DC current on a pair of electrodes and put them in a
conductive liquid and you're going to find one of them gradually
disappearing.

David Brodbeck, N8SRE
'82 Diesel Westfalia
'94 Honda Civic Si -- For Sale
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