Re: Coil behavior

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Glen McGowan" <glen.mcgowan@xxxxxxxxx>

After reading the posts from everyone I think that is the easist and 
most desirable in my case. Upgrading my MMC will knock down two birds 
with one stone.  I can fix my non-LTR setup and address the tuning issue.

I'll just buy knew caps and move my current MMC over to a smaller 
coil. Should work nicely with the 12/30mA in it.

Thanks for you help.


On 10/22/06, Tesla list <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx> wrote:
Original poster: Vardan 
<<mailto:vardan01@xxxxxxxxxxxxxxxxxxxxxxx>vardan01@xxxxxxxxxxxxxxxxxxxxxxx>

Hi,

For a static gap system, make the primary cap 16nF.  The larger cap
will require significantly fewer primary turns and will probably
bring you into range.

Cheers,

         Terry

At 09:46 PM 10/21/2006, you wrote:
>Hello All,
>
>I'm afraid to ask but I think I may be lacking in primary turns. I'm
>running a resonate coil (poor planning on my part). That said I'm
>running very conservitave spark gap settings. One of the issues I'm
>running into is I have my tap connected to the very end of my
>primary (15 turns counting the tap lead). I dont' get streamers at
>any other position but the one I just mentioned. If I connect to
>turn number 14 I get nothing. I do notice however that my safety gap
>(Terry's Filter) fires solidly at turn 14 and any other turn for
>that matter and no streamers. The safety gap fires quit frequently
>even at primary turn 15 but more pronounced at 14. ( I just realized
>I  should prolly open up the safety gap a hair while proof reading my post.).
>
>My question is can I adjust anything besides adding extra turns to
>the primary? Can I use a smaller toroid, raise/lower the secondary
>or raise/lower the topload? I really don't want to re-build the
>primary.  JavaTC says I should be tuning at 13'ish turns. I tried 13
>and get nothing but a safety gap arc. I know I'm doing something wrong.
>
>
>Transformer: 15/60
>Primary: 15 turns of 1/4 copper tubing.  (including Tap lead.)
>Secondary : 4" and 23" of actual coil on a 25" form. (first turn
>level with primary, maybe a hair above)
>Toroid: 4x19 sitting at 25" high.
>MMC:  .0093uF  (Ya I know I'll build another one)
>
>