Re: [TCML] 8 inch tesla coil design

["David Rieben" <drieben@xxxxxxxxxxx>]

Jeremy,

Your design seems pretty decent to me. The short and
simple answer to your desire for fewer primary turns
to tune is to increase the capacitance of your primary
capacitor and since you are using an MMC as opposed
to a single commercial pulse cap, this should be a reason-
ably simple adjustment to make, assuming you have
additional MMC capacitor units at your disposal.

David Rieben



----- Original Message ----- 
From: <jeremyee@xxxxxxxx>
To: "Tesla List" <tesla@xxxxxxxxxx>
Sent: Wednesday, September 08, 2010 7:59 PM
Subject: [TCML] 8 inch tesla coil design


> 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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