Re: Kicker Coil Powered TC

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Kevin Ottalini by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ottalini-at-mindspring-dot-com>

Steve:
    The Science First coil is a kicker coil ... in fact the same as the
Edmund small coil since Science sells to Edmunds.

This coil has a conical secondary, with a single wire turn primary
which is powered off a small induction coil run on 120VAC.

The resonant frequency is quite high,  perhaps 2MHz or more ...
I haven't measured it, but I will.

All in all I was quite disappointed in the performance.

Anyone can take a relay with at least one NC contact and wire the
coil through the NC contact to make an induction coil.  The voltage
will be built up across the coil itself (as the field collapses), and
can be quite dangerous!

I built one of these when I was 13 or so running off a 9V battery
(I still have it ... I'll take some pics).  I used old CB antennas as
electrodes.  It will totally lock up all the muscles in both arms
and hands such that it  is impossible to let go!

Just imagine what one powered off wall current would do.

Everyone, please be careful with these ... they look simple and
not very dangerous but they are quite deceptive and can be lethal.

Kevin

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, January 15, 2002 11:07 PM
Subject: Kicker Coil Powered TC


> Original poster: "S & J Young by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<youngs-at-konnections-dot-net>
>
> Hi List,
>
> Just wondering if anyone has built their own kicker coil powered small TC,
> similar to those sold by Edmunds Scientific.  If so, please share your
> design and results.  (A kicker coil is sort-of a one winding induction
coil
> which relies on the collapsing magnetic field to generate perhaps 1 KV
> impulses.  It was more common in the early 1900s.)  Seems like one could
> make a kicker coil by using 120 VAC relay with normally closed contacts.
>
> A kicker coil powered TC should be a fairly safe introduction to TCs as no
> HV transformers are involved.  One should be able to produce
"streamerettes"
> a couple inches long.
>
> For those interested in this, get a book from Lindsey Publications called
> "High Frequency Apparatus" by Thomas Stanley Curtis, originally published
in
> 1916.  It has a chapter on kicking coil apparatus.
>
> --Steve Young
>
>
>
>
>