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Registered Member #1225
Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
Lets think about it like this. You do not want a coil to be too big for a certain output size. If you had a 3 foot long coil and 6 inch sparks, that would not be as impressive as a small coil. So, in a way smaller wire is better, because you can get the right freq with a smaller size.
Just use something like what Steve Ward used. Too small of a secondary will heat at high poweres, buit that is not the case, so lets not get into this. Or, maybe it is the case. I do not know. If so, a bigger coil has more surface area to dissipate generated heat. Not to mention less heat due to lower resistance and other good things like that.
Registered Member #1517
Joined: Wed Jun 04 2008, 06:55AM
Location: Chico CA
Posts: 304
OK.
So here's my answer,
I am using a 4in, 11in long form. I plan on using a nice aluminum topload from amazing1.com, 2in by 8in ring. This should achieve a secondary freq of 255kHz I think...
Registered Member #289
Joined: Mon Mar 06 2006, 10:45AM
Location: Conroe, TX
Posts: 154
With what wire gauge? With 30ga and a 2x8 toroid you would come out around 205KHz (assuming you are talking about a 4" PVC form, which is actually 4.5"), which I would call great. Regardless, 255KHz is a workable Fo.
Registered Member #289
Joined: Mon Mar 06 2006, 10:45AM
Location: Conroe, TX
Posts: 154
Yep, the secondary is a little chubby but it will look cool with a 10" arc coming out the top. Good luck with the rest of the system, let use know how it turns out.
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24 AWG for Mini SSTC
