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Re: [TCML] 6"secondary



You need to be careful with the 'k' or coupling factor. A larger secondary will be nearer the inner turn of the primary and you may end up over coupled causing racing sparks. Also the reduced clearance to the inner turn may cause flashover, personally I would remove the inner turn ( one whole turn) - it will have little effect on the primary inductance.
Use Javatc as a guide to get the right coupling or 'k' factor.
The 0.25 inch tube will be ok as there's no need to change that unless you increase power significantly.


Regards
Phil Tuck

www.hvtesla.com



-----Original Message-----
From: Tesla [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of John Cooper
Sent: 15 December 2014 02:38
To: tesla@xxxxxxxxxx; alan@xxxxxxxxxxxxxx
Subject: [TCML] 6"secondary

If I just swap my 4" x22" secondary with a 6" x34"secondary and bigger toroid 6" dryer duct vs 4" are any other changes needed other than retuning the primary?  For instance instead of 1/4 tubing primary would the diameter have to be increased?  I wouldnt be changing anything on the primary side.  It would just run weaker until I increased the nst current and mmc array right?


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