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Re: [Amps] Salt water load

To: amps <amps@contesting.com>
Subject: Re: [Amps] Salt water load
From: Ron Youvan <ka4inm@tampabay.rr.com>
Reply-to: ka4inm@tampabay.rr.com
Date: Sat, 17 Jul 2010 12:09:29 +0000
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Martin Sole wrote:

> This is my concern.

> I built a saltwater load in a 500gr coffee jar, it certainly works as
> suggested. I have not tried it with more than 100 watts but I did put power
> into it for a fair few minutes. The outer of the jar had noticeably warmed
> but I didn't conduct any tests of a more scientific nature. Though I have
> not used the load in several months the water in the jar looks essentially
> as it did originally. Will have to measure it again when I get home.

> I'm not (yet) comfortable with the thought of power being dissipated in an
> un screened device such as this. In one of the articles I have seen it
> mentioned not using a conductive container but I cannot see why that would
> not work. Take a metal can and insert a single conductor into the centre of
> the salt water such that the container acts as the other conductor and
> essentially screens the load at the same time. Not tried this yet but seems
> to me it would be the same thing.

   A conductive container must be able to withstand the sodium chloride.  
Stainless steel can not 
withstand the sodium chloride for very long at elevated temperatures.
-- 
    Ron  KA4INM - The next election, I know what is going to happen, I'm going 
to help.
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