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Re: How to rise the secondary? (fwd)



---------- Forwarded message ----------
Date: Tue, 14 Jul 1998 23:31:45 -0600
From: terryf-at-verinet-dot-com
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: How to rise the secondary? (fwd)

At 09:33 PM 7/13/98 -0600, you wrote:
>Date: Mon, 13 Jul 1998 00:22:50 -0400
>From: Richard Hull <rhull-at-richmond.infi-dot-net>
>To: Tesla List <tesla-at-pupman-dot-com>
>Subject: Re: How to rise the secondary? (fwd)
>
>
>
>Tesla List wrote:
>
>> ---------- Forwarded message ----------
>> Date: Fri, 10 Jul 1998 23:37:10 +0000
>> From: "John H. Couture" <couturejh-at-worldnet.att-dot-net>
>> To: Tesla List <tesla-at-pupman-dot-com>
>> Subject: Re: How to rise the secondary? (fwd)
>>
>>   Richard, et al -
>
>
>
>>   Do you (or R. Hull) have any test data that would show how much the
>> streamer loading, etc. capacitance is and how much it affects the operating
>> frequency after the toroid mounting capacitance change is taken into
>> consideration? As I indicate above the operating frequency change for only
>> the streamer loading, etc. should be very small.
>
>...........................Streamer loading on a real big system is extreme.
>Nemesis' instrumented resonance with top load was 66khz.  Running, for best
>spark, another whole turn was required to go to 54khz.  I learn quickly to drop
>the calculations and expect at least a full extra turn on all primaries where a
>toroid was used whose diameter was in excess of  100% the coil height.  After
>1992 all of my magnifiers used toroidal diameters which approach 200% of the
>resonator coil height.  Maggey 11-E  uses a 46" diameter toroid on a 12" long
>resonator.  R. Hull
>
>.............................
>

        I originally didn't think this capacitance loading effect from
streamers was valid.  However, I now feel that the scale I tested at and the
scale (Nemesis) that Richard tested at, are not comparable.  More testing is
needed with high power and BIG streamer systems to verify this effect.  I
still have my doubts but I don't have any data to verify them.  

        Terry Fritz