><snip>-----------------------------------------------
> I built a version of the tester shown on this page:
>
>http://www.geocities.com/Yosemite/2131/shspeed.html
>
>It has the disadvantage of needing a computer with a sound card to
run,
>but seems pretty accurate. I had some difficulty finding the specific
>diodes noted but with help from the clerk found a suitable substitute.
>
I guess it doesn't matter what the plug polarity is in this case? ie,
which terminal of the plug is positive and which is negative?
Be seeing you.
Dirk Wright
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