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effects of spacing secondary windings
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From: terryf-at-verinet-dot-com [SMTP:terryf-at-verinet-dot-com]
Sent: Sunday, June 07, 1998 3:14 PM
To: Tesla List
Subject: Re: effects of spacing secondary windings
Hi Clay,
Many of my coils are space wound to some degree since they are
computer wound. I have not noticed any difference at all between space
wound and close wound coils. Medhurst, Wheeler, and other calcualtions all
work just fine. If I vary the winding pitch over the length, then it all
changes drastically but that is the only exeption I have ever noted.
Terry Fritz
At 10:31 PM 6/6/98 -0500, you wrote:
>
>----------
>From: Larry Bud Melman [SMTP:gasman-at-althea.a-line-dot-net]
>Sent: Saturday, June 06, 1998 9:00 AM
>To: tesla-at-pupman-dot-com
>Subject: effects of spacing secondary windings
>
> Hello all,
>
> I'd like to tap into the knowledge of all you theorists out there,
>and ask a question about a topic recently in discussion here: spacing the
>windings of the secondary with an inert spacer (eg. fishing line) to prevent
>breakdown.
>
> Common intuition tells me that a 21" coil wound with 1000 turns of
>magnet wire (tightly) is not the same coil as a 42" wound with the same 1000
>turns with one diameter between each turn, right?
>
> What is the effect (if you think there's any) of winding a secondary
>in this fashion on the frequency, inductance, self-c, etc? I'm presuming
>such winding renders programs like wintesla useless?!
>
> I'm starting construction of a fairly large coil, and I want to space
>the windings; however, obviously, whether or not I do is going to make a big
>difference in the diameter of wire I'll be using - my secondary is going to be
>nearly four feet high, and about 12 inches in diameter (using 10 kVA PP for
>supply).... 8-)
>
>
> Thanks in advance, and happy coiling to all.
>
>
> Clay.
>
>
>