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Re: Help...I'm having a lot of problems here...



Hi Kent & Kim,
Here is a quick overview of your coil specs from my semi-experenced
point of view.               (1) Transformer; OK...sounds like an Oil
Burner Trans. (2) Cap; best size for your trans. would be between .006 &
.007 mfd. -at- 30 kV or better. You say your caps are in 'parallel?' This
would not raise their Voltage rating . If you ment 'series' , then the
capacitance would be too small, about .0008 mfd. (3) Spark Gap; If it's
an enclosed box, you probably need some airflow across the gaps, for
cooling and to help quenching. (4) Primary; probably needs more turns
(12 to 15, but just a guess). Tubing may be a little large, (1/4" might
be better) with a 1/4" spacing between turns. (You'll need those extra
turns when tuning). (5) Secondary; this sounds great! (6) Toroid; This
would be a 4" dia. x 16" width. This should work, although this may be a
bit too large, unless the coil is already tuned and running well. (7)
Hookup; Connect both trans. leads directly across the sparkgap. Connect
the primary coil and cap. in series, and connect the other end of the
pri. coil to one side of the sparkgap, and the other side to the cap. to
the other side of the sparkgap. Ground nothing in the primary circuit.
Connect RF ground (ground rod driven a few feet into ground, or copper
cold water pipe) to bottom of secondary, and to case of O.B.Trans. This
is only a basic circuit, and does not indicate any trans. protection or
line filtering circuits. Untill you incorperate these circuits, keep
your TOTAL sparkgap width around 1/4" or less.          Hope this is of
some help, and good luck in the science fair!
Best Wishes and SAFE & HAPPY COILING. Tony Greer / Special Effects Neon