Have you simulated the coil in something like JavaTC? Apart from the BPS
being too low, the coupling looks like it might also be a little low.
On Thu, Feb 26, 2015 at 7:59 AM, William Howard <snakeprior@xxxxxxxxx>
wrote:
> Hey mate,
> Check your quenching and timing. This can have a huge effect on
> performance.
>
> -Wil
> On 26/02/2015 8:04 PM, "Kuba Anglin" <kubaanglin@xxxxxxxxx> wrote:
>
> > Hello,
> > I recently finished building my second Tesla coil.
> > Here are the specs:
> >
> >
> > - 2 parallel 12KV 60mA neon sign transformers 12KV 120MA
> > - 2000V .15uf capacitors. 6 strings of 13 (78 total). 69nf.
> > - Rotary spark gap 1780rpm with 3 tungsten electrodes.
> > - Resonant frequency: around 110KHz
> > - 1/4" primary coil (tubing) 10 turns, 7.5 turns for optimal spark.
> > - 24 AWG secondary. 6" form (6.625"). 1240 turns. 30" wind height.
> > - 24"x6" Spun Al toroid
> >
> > After firing up the coil, I was disappointed to see only 1-2' sparks. My
> > previous 4" coil that uses only one transformer could output about 3'
> > sparks. The primary is properly tuned and the spark gap fires about 80
> > times per second as it should. I double-checked the wiring and it looks
> > great. I must be missing something, but I cannot figure it out. I 3D
> > printed the primary standoffs to perfectly hold the primary coil. The
> > secondary coil is perfectly wound and glazed. The transformers are fully
> > functional. The whole coil should operate at around 1800 watts (including
> > the motor). Here are some links to pictures of the coil: Tesla coil
> > <http://s11.postimg.org/50b6jpg6r/Large_Tesla_coil.jpg>, Spark Gap
> > <http://s1.postimg.org/xfowkeppr/Spark_gap.jpg>. Here is a video of the
> > first run: Test <https://www.youtube.com/watch?v=n5gSaWPfZH4>.
> >
> > Any feedback would be greatly appreciated.
> >
> > Thanks,
> > Kuba Anglin
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxx
> > http://www.pupman.com/mailman/listinfo/tesla
> >
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla
