Re: Fanciful spark-augmenter

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

Original poster: "Kennan C Herrick by way of Terry Fritz <twftesla-at-qwest-dot-net>" <kcha1-at-juno-dot-com>

In my interchange with Scott Fulks yesterday on the subject, there
remained a question about the Q of my fanciful apparatus.  I made a quick
measurement today:

I wound 5T of 12 ga house-wire around a 12" dia form, connected a fixed
capacitor across it, excited it with a 1T loosely-coupled coil from a
signal generator, and measured its Q using the Fr/(F(hi)-F(lo)) formula. 
With a .03 uF capacitor the Q was ~18 and with a .07 uF one, 16:
essentially the same.

Not too near the Q of a good secondary, to be sure, but maybe good
enough.  If excited with--say--my primary where I develop perhaps 300
volts/turn of equivalent conductor, I should think I could pump up such a
resonant tank to perhaps 3000 volts/turn.  At 5 turns, I would get 15 KV.
 That's a fairly respectable capacitor-charge that subsequently might be
dumped into the secondary at the slightly-shifted Fr.

Ken Herrick
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