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RE: 3MV/meter


Would not the primary tank ring down?  Would this not give a double 
exponential
voltage waveform on the secondary tank?  Since the period of the ring 
frequency
is shorter than the deionization time then would not this lead to the spark 
being
still longer than in the DC case?  How about something like a very high 
impedance
(reactance) voltage divider tapped off with a diode to a dc capacitor 
connected to
an electrometer?  One end goes to the secondary toroid while running and the 

other end goes to ground i. e. peak reading voltmeter.  It must be greater 
than
about 10 gigohm to not load down the secondary (maggey).  Another way might
be to measure the potential of the electrons sprayed out by the coil 
discharge by
just hanging a wire up as an antenna and charging up a cap connected to an
electrometer?  What do you think about this?
Barry


 ----------
|From: "tesla-at-poodle.pupman-dot-com"-at-PMDF-at-PAXMB1
|To: Benson Barry; "Tesla-list-subscribers-at-poodle.pupman-dot-com"-at-PMDF-at-PAXMB1
|Subject: 3MV/meter
|Date: Friday, September 27, 1996 4:16AM
|
|<<File Attachment: 00000000.TXT>>
|From hullr-at-whitlock-dot-comThu Sep 26 22:16:36 1996
|Date: Thu, 26 Sep 1996 17:14:50 -0700
|From: Richard Hull <hullr-at-whitlock-dot-com>
|To: tesla-at-pupman-dot-com
|Subject: 3MV/meter
|
|All,
|
|There was an old article By DC cox in a TCBA NEWS of yesteryear.  In this
|article he suggested single pulsing a Tesla coil to determine the actual
|voltage output.
|
|He recommended DC charging of the normal tank capacitor and single firing
|the system.  The resultant non-ionic spark length would represent the
|actual output capabilities.
|
|I have thought this out a bit and if you were to just align you gap for
|normal presntation with air flow or whatever quench method you use, and
|apply any DC voltage which will charge the cap to its air break over
|point in the gap, it will fire as a close analog to real operation.  Next
|a grounded object which is relatively flat should be moved in or out from
|the toroid (which has a moderately pointed object on it (the capacity
|will not assist in single shot storage).  Room lights should be out or
|very dim.  At the point where a true streamer arcs (not just a brush
|connect), this is the output of you coil based on the DC, 3 megavolt/
|meter, air breakdown rule.  It is important to closely mime the real
|conditions of your coil system to make this really hold.
|
|A fan should be used after each shot to remove all ions prior to the next
|attempt.  Your tune may have to be moved back down the primary for best
|spark due to the absense of ion loading about the toroid.  Still, it is a
|better idea for the real voltage output of the coil than some arbitrary
|rule of thumb applied to running coils!  The result would be an informed
|estimate of a coil's capability.
|
|There are problems with this method, but attention to detail and the
|realization that a lot of variables are still unresolved will put the
|test in proper perspective.
|
|I'll try this soon with a small system first.
|
|Richaard Hull, TCBOR
|