Subject: PRIMARY/SECONDARY COUPLIN
From: richard.quick-at-slug-dot-org (Richard Quick)
Date: Sat, 1 Jul 1995 04:23:00 GMT
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* Original msg to: Esondrmn-at-aol-dot-com
Quoting Ed Sonderman:
ES> I have my spacers made to raise the secondary and will try
ES> it this weekend. I will try 4.0" first.
That should definately relieve the pressure some, if not cure it
altogether. You might try both tapping the primary out, and
raising the secondary, if over-coupling is still a problem.
ES> If I raised it up a foot, I would expect weak discharges and
ES> no visible corona.
Yes, though you might see a bit of corona as the field flux
contracts and only couples in the bottom third of the secondary
ES> As I move it closer - what happens? I would expect to find
ES> a point where the discharges are maximum and the corona is
ES> still minimal - correct?
Correct. When you achieve the maximum spark and the minimum
corona, you are "critically coupled".
ES> And as I move it closer still, I will get more intense
ES> corona and shorter discharges?
Yes. As you overcouple the corona loss increases, splitting of
the secondary increases, and spark lengths decrease.
ES Just wondering, I don't have any experience with this.
Sounds as if by the time you read this you will have some pretty
decent experience. Experimentation is the best way to progress.
... If all else fails... Throw another megavolt across it!
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