RE: Coil behavior

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Jim Mora" <jmora@xxxxxxxxxxx>

Hi Glen,
Good choice! Just series 10 .15uf CD caps which will give you .015. Solder
well and don't forget the bleeder resistors.

Jim Mora Get ready for a difference!

-Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx]
Sent: Sunday, October 22, 2006 4:18 PM
To: tesla@xxxxxxxxxx
Subject: Re: Coil behavior

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)
 >
 >