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Re: Monster Cap balanced by Monster Topload?
In a message dated 3/19/99 10:52:05 PM Mountain Standard Time,
tesla-at-pupman-dot-com writes:
>
> [Even getting the cap size down to 0.1 shows I need only 7 turns :/]
>
> Charging system is capable of delivering 500ma at 14.4KV, so I don't think
> I'll have a problem running it (I could be wrong)
>
It looks to me like you would want to put a 0.16uF cap(any voltage
rating) in series with your cap #2 (0.2uF) for best match with your
transformer. That would give you 0.09uF and about one more turn on the
primary (without any extra toroid included).
You can tune your system with 7 - 8 turns easily enough. I used an off
axis tuning coil for fine tuning mine with success. It is a ten turn coil of
about 3 inch diameter and gives me the equivalent of about one outer turn. It
is much easier than trying to find the tap point on the primary, since you
don't have to go around it, just tap the turns on the tuning coil. Having
the number of turns that you do will give you a great Ls/Lp ratio in spite of
the quenching difficulties. I have not tried to quench such a large cap as
you will be using, but I don't think that having a few more turns on the
primary will make that much difference. Your gap design will be a more
important factor.
Finally, why not use an 8 inch by 60 toroid rather than 6 inch? It
should give you a bit more capacitance(probably not too much though) and a
higher breakout voltage.
Mike