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Re: Perfecting my final design...

Original poster: "S&JY" <youngsters@xxxxxxxxxxxxxxx>

Hi Adam,
Your two-layer primary will end up being much more than twice 0.306mH
because of significant mutual inductance between the two windings.  Also,
unless your two windings are spaced far apart, you may need to add some
insulation (e.g. acrylic sheet) between the windings to prevent flash-over
between the windings.
--Steve Y.
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Monday, June 13, 2005 4:21 PM
Subject: Perfecting my final design...


> Original poster: "Adam R." <arabraxas@xxxxxxxxxxx>
>
> I have a question on the primary--I'm trying to make it high
> quality/durable and compact. What I'm trying is something that I've seen
> before and have been wanting to give it a go: a simple dual layer primary.
> It will be 1/4" OD Cu tubing ten turns, each wound in opposite directions
> (so 20 turns total, top and bottom layers). So each layer will be ABOUT
> 0.0306 mH. Does this all sound right? I'm worried I might build it and
find
> I need more inductance! Or am I making it overkill with two layers of TEN
> turns? Because the total width of the base is 17"x17", I need to get the
> size right (I have acrylic pieces and they are expensive... cannot mess
> up!) My coupling to the secondary is about 1".