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Re: Practical Tuning Ques
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To: tesla@grendel.objinc.com
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Subject: Re: Practical Tuning Ques
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From: mark.graalman@mediccom.norden1.com (Mark Graalman)
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Date: Fri, 03 Feb 1995 20:22:00 -0500
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-=> Quoting Nikola Tesla Aka Chip At to Tesla List <=-
NTAC> TAC> Message-ID: <9502032100.AA29581@grendel.objinc.com>
NTAC> Newsgroups: tesla.list
NTAC> From EDHARRIS@MPS.OHIO-STATE.EDU Fri Feb 3 13:45 MST 1995
>Received: from ohstpw.mps.ohio-state.edu by csn.net with SMTP id AA10042
NTAC> (5.65c/IDA-1.4.4 for <tesla@grendel.objinc.COM>); Fri, 3 Feb 1995
NTAC> 13:01:41 -0700
NTAC> Date: Fri, 03 Feb 1995 15:01:34 -0500 (EST)
NTAC> From: EDHARRIS@MPS.OHIO-STATE.EDU
NTAC> Subject: Practical Tuning Question
NTAC> To: tesla@grendel.objinc.com
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NTAC> OK all,
NTAC> I'd like to pick your brains about optimal tuning for coils. When
NTAC> does one find that the optimal secondary sparks occur? (A) When the
NTAC> system is tuned at low power (no secondary discharge)? (B) The system
NTAC> is only optimally tuned when the coil is run at a given power level
NTAC> (tuning is a function of power level)? (C) none of the above. I can't
NTAC> exactly say what I mean by "optimal" sparks because I'm not sure if
NTAC> one gets fatter or longer or brighter discharges when the tuning is
NTAC> optimized.
MG> Not a simply answered question, in reality "B" in the above is most
correct. It's a combination of best"sound" from the main gap, brightest
core in the discharge spark, and longest discharge.
NTAC> The point behind all of this is that I've been wondering how much
NTAC> the discharge's capacitance changes the tuning of the coil. This
NTAC> probably isn't a very simple problem from a theoretical point of view
NTAC> since the capacitance chages in time as the discharge progresses
NTAC> outward. But, I would just like to have people's observations of their
NTAC> own coil(s).
MG> It's been my findings that the typical secondary resonant point drops
in frequency about 10-20 Khz. depending on the length and number of
discharges from the secondary terminal.
Mark Graalman
mark.graalman@mediccom.norden1.com
NTAC> Thanks
NTAC> -Ed Harris(another Ed)
... Alias, Mark the spark
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