Re: [TCML] First TC firing

[Matt <tonedeafmessiah@xxxxxxxxx>]

I am aware the coke bottles will not last long (temporary measure for the
moment). However at the moment the coil is completely non-functional. Does
anyone have any ideas where I'm going wrong?

Here's an ASCii diagram of my current layout;

                                O--o--O
                                   (
                                   (
|---------|-------|-----o o-----|  (
|         |       |     SG      |  (
|         |       -             |  (
OBIT      GAP     CAP           )  (
|         |       -             )  (
|         |       |          L1 )  ( L2
|---------|-------|-------------|  |
                                  RF
                                  GND

On Wed, Dec 10, 2008 at 3:35 AM, Lau, Gary <Gary.Lau@xxxxxx> wrote:

> The amount of RF that your xfmr is exposed to is less if you swap the
> positions of your main gap and the cap.  Performance is the same, but
> placing the main gap across the xfmr effectively shorts out most of the RF
> energy from going back to the xfmr.
>
> If you are using plastic coke bottles, they're not likely to last very long
> :-(
>
> You give no specifics (a few turns, don't know exact gauge, vague copper
> vase topload...)  that would allow one to calculate if you are properly
> tuned, so I'll leave that to you.
>
> Regards, Gary Lau
> MA, USA
>
> > -----Original Message-----
> > From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> > Behalf Of Matt
> > Sent: Tuesday, December 09, 2008 4:21 PM
> > To: Coil Mailing List
> > Subject: [TCML] First TC firing
> >
> > Hello everyone, thanks for your help so far.
> >
> > I am about to test my coil and would like some input to make sure things
> > won't go drastically wrong.
> >
> > I have my transformer (2x 7.5kv outputs at 40ma Danfoss OBIT) wired to
> the
> > mains. From there it is wired in parallel to first my safety gap, then my
> > capacitor bank (two 2l coke bottles, wrapped in foil and filled with
> water
> > saturated with table salt). In series to that I have my spark gap, and
> then
> > my primary coil (a few turns of thick  enamelled wire)
> >
> > The primary is at the base of the secondary (1000+ turns of very thin
> magnet
> > wire - I don't know the exact gauge, but it was the second thinnest I
> could
> > get from Maplins, and is thin enough to snap under force applied by me).
> The
> > secondary is grounded to a square sheet of chicken wire, and the topload
> is
> > the bottom of a copper vase.
> >
> > I include a VERY simple circuit diagram.
> >
> > Some feedback would be MUCH appreciated soon as I am about to turn it on
> and
> > could do with some reassurance that I'm not going to destroy something...
> >
> > Thanks a lot,
> >
> > Matt
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