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Re: [TCML] No topload output

On 12/27/15 7:02 PM, Heather & Paul Novotny via Tesla wrote:

I think it was about 578kh.

I can try a lower number of windings, but I'm kind of thinking maybe I need a breakout point or a smaller topload?
Your topload is fine.. You need a temporary breakout point to get things started. Lay something like a metal ruler (with a sharp point) across the toroid. or a long piece of stiff wire, or something like that. 





Thoughts?
--------------------------------------------
On Sun, 12/27/15, Brian Decosta <briandecosta38305@xxxxxxxxx> wrote:

  Subject: Re: [TCML] No topload output
  To: "Heather & Paul Novotny" <p_novotny@xxxxxxxxx>, "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
  Date: Sunday, December 27, 2015, 8:53 PM

  What are the resonant
  frequencies of the primary + tank cap and the resonant
  frequency of the secondary + top load as determined by
  JavaTC?  The secondary plus top load should be about 10-20%
  higher resonant freq then the primary tank circuit to allow
  for capacitive loading of the secondary plus top load by the
  streamers.

  Hope this
  helps

  Brian

  Sent from my iPhone

  > On Dec 27, 2015, at 8:29 PM, Heather &
  Paul Novotny via Tesla <tesla@xxxxxxxxxx>
  wrote:
  >
  > Hi
  guys,
  >
  > I just
  tried my TC for the first time tonight after COUNTLESS hours
  of work on it.  Unfortunately, I am getting no streamers
  from the topload.
  >
  >
  Here are the specs of my coil:
  >
  > Power Supply: 12,000 volts 30 mA NST
  >
  > Terry Filter
  >
  > Fan quenched static
  spark gap
  >
  > Primary
  Circuit: Bucket capacitor measured at .0145uF, 7 turns of
  .25" copper tubing ID=6.5" OD=14" winding
  spacing = .25"  I tried tapping it at 4.4 turns, 3.4
  turns, and 6.4 turns.
  >
  > Grounded Strike Rail
  >

  > Secondary Circuit: 3.5" pvc pipe
  coil form, ~875 windings of 24AWG enamel coated copper
  magnet wire - 18.5" of windings, topload toroid
  minDiam=4.25" majDiam=17"
  >
  > LV end of secondary coil goes to ground,
  HV end of secondary connected to the toroid
  >
  > Bottom edge of
  toroid is 3.25" higher than the top winding of the
  secondary coil.
  >
  >
  Primary windings go in the same direction as the secondary.
  Primary coil inside winding moves in a counter clockwise
  manner towards the outside end and the secondary starts at
  the lower side and winds in a counter clockwise direction as
  it goes up to the top.
  >
  > I tried a few different coupling positions
  too, I tried an 1/8" below the start of the secondary
  windings, right at the secondary windings, and 1/8"
  above the start of the secondary windings.
  >
  > Any help would be
  much appreciated!
  >
  >
  Here's one of my test runs: https://youtu.be/jQPxk-NqpT8
  >
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