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Re: Help PLEASE! So close.. and yet...
>From: Tesla List <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Help PLEASE! So close.. and yet...
>Date: Thu, 22 Apr 1999 22:13:08 -0600
>
>Original Poster: "Yuri Markov" <wmondale-at-hotmail-dot-com>
>
>Well, I fired up my "not shooting for anything glorious" coil for
the
>first time. I had a problem. The transformer, capacitor, spark gap,
>and whole tank circuit work perfectly. Real nice, cool sounding
>sparks in the gap, everything perfect. Only one slight detail - the
>secondary coil and discharge terminal did nothing. Absolutely
>nothing. I tried grounding the bottom to a well, and then directly
to
>the house ground, to no avail. In case it helps: The power supply is
>7500 volts at 30 milliamps(that's 220 watts). The capacitor is a
>leydan jar of an unknown capacitance. The primary is about five
turns
>of really big fat copper stuff. As I said, that all works fine. The
>secondary is 30 AWG enamled magnet wire (the really thin red stuff -
>it was all I had) wound about 3/4 the height of a thin untreated
>cardbord wrapping paper tube (2 inches diameter). A softball wrapped
>nice and smoothly in aluminum serves as the discharge terminal. What
>is wrong? Is the cardboard conducting all the RF? Is the wire
fatally
>thin? Help, please!
>
unless your leyden jar is realy big, your probaly out of tune. You
need more capacitance or inductance in your tank circut to lower the
pri. resonant frequency untill it matche the sec. frequency. I'm
guessing its to high because a 2" coil w 30 awg wire probally has too
much inductance, but you want to avoid the hastle of changing that if
you can. You could also try a smaller toroid.
Chris, via the inter-thingy
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