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Re: I need help with my crappy coil
>Original Poster: "m0neyfromyuba" <m0neyfromyuba-at-netzero-dot-net>
>
>I need some help my coil only makes one inch sparks
>
>Transfomer: an MOT thats current limited to about 0.45 amps by a oven
>heating coil.
>
>Tank cap: MOT cap-2100 volts .7 microfarad
>
>Spark gap: single gap 1/16 inch
>
>primary: flat spiral 9.5 turns of 0.125 inch copper wire. outside diameter
>is 7.5. and inside diameter is 2.5 inches.
>
>Secondary: 9 by 1.5 inch secondary on a pvc. Total turns 656
>
>This coil really sucks...i had to go with an MOT because i had no access to
>a NST or an OBIT. The circuit is the same as a standard tesla coil with
>capacitor in series with the primary without any inductors or safety gap
>
Couple of problems here, the main one being that you are WAY out of
tune based on that cap and the coil size. Should be a couple of
zeros before that cap value. You might go through the math again and
rework your design. All the files you'll need are at pupman-dot-com
Once you are in tune you can improve the gap etc.
Zap!
Charles Brush
http://www.VoltNet-dot-com