Re: Jonathon's 6" Coil (fwd) -> Streamer length to voltage (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sun, 1 Jul 2007 13:27:54 -0500
From: D.C. Cox <resonance@xxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Jonathon's 6" Coil (fwd) -> Streamer length to voltage (fwd)



With a .05 uF Maxwell cap firing into a 3.5 turn, 5/8th inch OD copper 
tubing, the peak pri current was 2,350 Amps.  Erms supplied by a pole xmfr 
at 14.4 kV Erms.

Resonance Research Corp.
www.resonanceresearch.com


----- Original Message ----- 
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Sunday, July 01, 2007 12:26 PM
Subject: Re: Jonathon's 6" Coil (fwd) -> Streamer length to voltage (fwd)


>
> ---------- Forwarded message ----------
> Date: Sat, 30 Jun 2007 23:52:08 -0700
> From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Jonathon's 6" Coil (fwd) -> Streamer length to voltage (fwd)
>
> Hi D.C.,
>
>>I also used Terry F's antenna system to do voltage calibration at 8 ft. 
>>We
>>used a 200 kV steady DC power supply on the toroid to get the base 
>>readings.
>>
>>
> Your talking about the planewave antenna. Yes, calibration is a must in
> order to correlate the scope readings to an actual value. Sounds like
> you had a means of doing this accurately.
>
>>I really am convinced this is quite accurate.  There was nearly perfect
>>correlations minus a percent for experimental error.
>>
>>
> It does sound accurate. The concern was correlating a spark length value
> to a top volt value may not be accurate. For single point discharge
> maybe, but when a coiler says I got "x length", he's almost never
> referring to a single point discharge (just average free air spark
> lengths over successive bangs).
>
>> <>but the electrostatic field voltage meter really does not load the
>> system appreciably.
>
> Using the planewave is probably ideal. As long as it is a good distance
> from the resonator it wouldn't load the system. The calibration for this
> type of antenna is what is necessary and it sounds like you had the
> means to do that. I use my planewave for measurements, but calibrating
> it for top volts would be a challenge for me without the right equipment.
>
> By chance, did you happen to take base current measurements at the same
> time that you did the testing? Paul might be interested in that data.
>
> Take care,
> Bart
>
>
>