Re: Disappointing Results

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

Original poster: "Barton B. Anderson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla123-at-pacbell-dot-net>

Hi David -

It sounds to me as if you have the cap parallel to the primary? The cap
should be placed in
series with the primary with the gap and transformer parallel to both.

Take care,
Bart

Tesla list wrote:

> Original poster: "David Kyle by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<dave-at-kyleusa-dot-com>
>
> I fired up the desktop model T spark coil powered coil with very
disappointing
> results. It appears that the pulse caps I am using simply short out the spark
> coil as I get no spark across my spark gap even when it is nearly closed. So
> here is the question: is it my choice of capacitor or have I selected too
high
> a capacitance value for such a low power coil.
>
>
>
> I know very little about the pulse caps I am using other than they are
rated at
> .05uf at 10KVDC. I put 5 in series to yield a .01uf at 50KVDC. The cap does
> measure out at the correct value and does not have measurable resistance
with a
> multi-meter. There is no question that when the cap is put across the coil it
> simply shorts it out.
>
>
>
> The spark coil might be good for about one milliamp but I had not
expected .01
> would short it out. What value might be more appropriate? Would a
doorknob cap
> be a better solution for a very low power coil?
>
>
>
> Dave
>
>
>
> =========================================
> Dave Kyle
> Austin, TX USA
> Email: dave-at-kyleusa-dot-com
>
>