Re: [TCML] 8 inch tesla coil design

[DC Cox <resonance@xxxxxxxxxxxx>]

3.5:1 is ok.  4.5:1 will provide better performance.

I usually shoot for 10-12 turn pri, so you might wish to add a small amount
of capacitance, but your 14 turn pri should also work very well.

Dr. Resonance




On Wed, Sep 8, 2010 at 7:59 PM, <jeremyee@xxxxxxxx> wrote:

> Hey group. It has been a long time since I have been on here and I wanted
> to pass a design by you guys to see if I have anything weird. Below are some
> inputs to and outputs from TeslaMap:
>
> 15 kV, 120 mA NST bank
> 30 nF MMC
> 8.625 inch secondary with 1160 turns of #23 magnet wire (74 mH)
> 6 in by 30 in toroid (31.6 pF)
> Tuned primary at 14 turns for 112 uH
> Resonant at 87 kHz
>
> One of my main concerns is sizing the toroid for maximum breakout voltage
> but keeping the number of primary turns down to minimize resistive losses.
> At 14 turns I feel like I am a little too high. I am using a static gap with
> about 6 parallel copper couplings. My secondary aspect ratio is about 3.5:1
> (is this ok?). I really appreciate any insight into my design. Thanks!
>
> Jeremy
> Cincinnati, OH
> Sent from my BlackBerry device from Cincinnati Bell Wireless
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