Re: Coil behavior

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Vardan <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)