Re: Thin wire for secondaries, was form material

["S.Gaeta" <SGTPORKY-at-prodigy-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Too thin for a normal tesla coil, but for those who love to build tiny coils
for show, it will work
I wound a paper towel roll sized secondary with 34 AWG wire. I am using a
.01 uf cap  and a 5/60 NST. The spark length is one foot and they branch out
horizontally and on a slight upward incline. Even with a small coil like
this I have no primary strikes. It can be seen at:
http://www.angelfire-dot-com/ga3/tesla/gaeta.htm
and
http://community.webshots-dot-com/photo/1865657/2848332zSSWZkOXdd

The second site is a trick shot in which proper size scale was maintained.
This wire must be wound very carefully and slowly. The spool should be
mounted horizontally on a smooth, round dowel to avoid hang-ups which would
cause the wire to break. If anyone wishes to copy this design, the primary
should be a larger diameter, because mine is over coupled (a series inductor
compensates for this).

Oh yea, by the way, the form material IS a paper towel roll! It was
thoughroughly saturated with polyurethane inside and out. It has cardboard
baffles on each end that were soaked in polyurethane and epoxy reinforced. I
applied three layers of 2mil thick kapton tape, and another coat of
polyurethane before I wound the wire.
If cardboard works this well, then I certainly see no problems at all with
fiberglass as discussed in the other posts.

Cheers,
Sue


sgtporky-at-prodigy-dot-net
----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, July 15, 2000 12:00 AM
Subject: Re: Thin wire for secondaries, was form material


> Original poster: Parpp807-at-aol-dot-com
>
> In a message dated 7/14/00 9:15:23 AM Central Daylight Time,
tesla-at-pupman-dot-com
> writes:
>
> << I'm not familiar
>  with the DSE designation, I assume it's a type of magnet wire? >>
>
> # 35 Double Silk Enamel. Interesting stuff but probably is too thin.  :-((
> A foot length of 1.5 inch diam pvc would be around 550 Ohms. Probably lots
of
> millihenrys with a high Q. Might be interesting to try something and I'll
put
> it on my list
> for this winter.  :-))
>
> Happy day,
> Ralph Zekelman
>
>
>