Re: more turns or biger cap?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" <FutureT-at-aol-dot-com>

In a message dated 6/14/03 1:02:46 PM Eastern Daylight Time, 
tesla-at-pupman-dot-com writes:

Josh,

With the relatively low voltage of MOT systems, the best "efficiency"
will probably be seen using rather large caps, to help keep the
break-rate reasonably low.  The 0.1uF cap is probably the best to use.
If the coil is large in diameter, not so many primary turns are needed
because the inductance will still be high due to the large diameter.

Low voltage systems demand the compromise of using a large
cap and fewer primary turns for best "efficiency" it seems.  The
purpose of using a lot of secondary turns, is so that a reasonably
large number of primary turns can be used despite the use of a
large cap.

John

>After a coiling for a few years and with John Freau's TC efficiency theory.
>It seams that the best performing coil is a large one 1600 turns of thin
>wire and a primary with many turns.
>But this means that the cap wants to be small.
>If I'm running a coil with a 5kw 4-pack MOT stack, the cap can be big, and
>should be to handle the powers involved. So does this point to an even
>larger coil to get the beast performance?
>If I wind an 6"x 36 coil with 24awg and I have a 20 turn primary. Is that a
>waste if I use a .1mfd cap. And if I use a smaller cap say .04mdf I can use
>more primary turns but will this give the best performance for the power?
>What to do what to do?
>
>Read you later
>Josh
>