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Any hope here?
----------
From: Bert Pool [SMTP:bertpool-at-ticnet-dot-com]
Sent: Sunday, January 25, 1998 12:58 AM
To: Tesla List
Subject: Re: Any hope here?
>----------
>From: Michael Baumann [SMTP:baumann-at-proton.llumc.edu]
>Sent: Saturday, January 24, 1998 9:46 AM
>To: Tesla-2
>Cc: tesla-at-pupman-dot-com
>Subject: Any hope here?
>
>Well, I am feeling a little defeated.. I think I got a bit ambitious.
>Fired up my new coil today after rebuildng the primary, and building
>a new topload, and could not get breakout to save my life. With
>a bump on the outside edge I did mangage to get regular 30" arcs.
>I'd love to have this beast firing without the bump tho-
>So I am open for suggestions!!!
>
>Parameters:
>Primary: 13 1/2 turns, tapped at 12 3/8 [ yes, the Q of this
> system is sensitive to 1/8 turn tapping] 8.25" inner
> 0.25" tubing, 0.25" spacing, 30degree rise.
>Secondary: 6.25" x 25" 22AWG
>Toriod: 15" center-to-center, 6" Aluminum duct [covers top
> 2 inches of secondary at the moment]
>Gap: RQ style [1" pipe, in 2" segments, my 3" based one is
> being rebuilt]
>Cap: Total of 0.0135 uf of homebrew poly plate.
>Power: 2 12KV/30ma NST in parallel.
>
>I am wondering if my topload is just too big, and if I should make a
>4" based one? or if there is some trick of tuning I could use to get
>breakout without the bump?
>[Note that this same coil, with a 12"x3" torid produces several
> 18" arcs at the same time.]
>
>
>--
>Michael Baumann Optivus Technology Inc.|Loma Linda University Medical
Center
>San Bernardino, California. (909)799-8308 |Internet: baumann-at-llumc.edu
>
Michael, I believe your hypothesis that this top is a little large for
the power you are putting in is probably correct. The fact that you get
zero breakout without a bump but get sparks with a bump is a classic
indicator of underpowering a top.
Rather than go to a smaller top, I'd encourage you to add another
transformer or two in parallel and kick your power up some. Once the
voltage DOES break out of this top - with no bump - it's gonna jump out
hard!
Bert Pool
bertpool-at-ticnet-dot-com
TCBFW