Re: Primary pipe size/spacing questions?

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Dr. Resonance" <resonance@xxxxxxxxxx>



Ball nose cutter on a milling machine.

The tubing size won't make a lot of difference at this power level.  1/4
inch is ok.

Dr. Resonance


>
> Ok, I am in the process of building/designing another
> coil. Currently, I have around 1300 watts of power
> available, a 6.312" x 28.375" secondary with 24 ga
> wire. I am currently on the design phase for the
> primary, and have a few questions. First, I see that
> most people are using 1/4" copper pipe. The problem
> is, for me to get 60' of pipe its gonna cost me... I
> did find some 3/8" pipe in a 60' roll for $20(us).
> Here's my question, I would assume, that the larger
> the pipe you use the more 'driving' power it takes to
> create a magnetic field? The same thing goes for the
> spacing, I see that the further I space the windings,
> I get more inductance per turn. Thus again, I would
> assume more 'driving' power to get the same magnetic
> field.
>
> So, for my application, (around 1300 watts, 3 NST's
> paralleled) is 3/8" pipe a bit to large?
>
> Also, as for cutting 'slots' in acrylic to make the
> standoffs for the primary, how did you guys cut them,
> just with a table saw and fence?
>
> Thanks in advance,
> ~Blimpie
>
>