[Prev][Next][Index][Thread]
RE: Best Primary Coil
Subject: RE: Best Primary Coil
Date: Thu, 24 Apr 1997 13:11:39 +1200
From: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz>
Organization Wellington Polytechnic, NZ
To: tesla-at-pupman-dot-com
Hello all,
Interesting comment....
> From: "William Noble" <William_B_Noble-at-msn-dot-com>
> To: "Tesla List" <tesla-at-pupman-dot-com>
>
>
> that's an amazing set of tests and very interesting results - but it
> brings to
> mind another primary configuration that I think would potentially act
> like
> your 15 deg coil but without the slant - it seems from your notes that
> the
> secondary likes to have the outer turns of the primary closer to it
> rather
> than farther away (at least that's the conclusion I draw from the
> experiments
> with spacing). two possible configurations of fairly flat coils could
> do
> this. You describe a 16 turn primary, so what do you think would happen
> with
> the following 2 configurations??
>
> 1. a two layer X8 turn flat pancake coil - start at the outside, spiral
> in for
> 8 turns, then raise up an inch and spiral back out another 8 turns. I
> guess
> if I were doing this I'd wind it on either side of an acrylic sheet.
> This
> would get the turns closer to the secondary without raising them up any.
That is precisely the configuration I will be using except that I am
planning to use three stacked to give a total of about 200uH. Also
saves half the money for the copper - good use of mutual inductance.
Malcolm