Re: An Interesting Problem

To: tesla-at-pupman-dot-com
Subject: Re: An Interesting Problem
From: Tesla List <mod1-at-pupman-dot-com>
Date: Thu, 16 Oct 1997 08:16:30 -0600 (MDT)
Approved: mod1-at-poodle.pupman-dot-com


---------- Forwarded message ----------
Date: Thu, 16 Oct 1997 06:50:54 +0000
From: "John H. Couture" <couturejh-at-worldnet.att-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: An Interesting Problem  

At 03:31 AM 10/15/97 +0000, you wrote:
<SNIP>
>> 
>>   Malcolm -
>> 
>>   This is an illustration of what I have mentioned in the past about
>> charging up the capacitance of the toroid.
>
>I'm not sure exactly what you mean here. If you mean that it is 
>taking several breaks to charge the terminal up to some humungous 
>voltage, I can categorically say that is not happening. Never has on 
>any of my systems.
>--------------------------------------------------
  Of course, the voltage on the terminal can never be more than the peak
secondary voltage.
-----------------------------------------------------

>Around 300 - 350kV based on an estimated transfer efficiency of 70 - 
>80%. It won't be far off and I now have a means of measuring this 
>efficiency pretty accurately.
------------------------------------------------------
  How do you measure the efficiency?
-----------------------------------------------------

>I am doing far better than that. I note that in many writings Tesla 
>was somewhat loose in his terminology. Richard Hull can correct me if 
>I'm wrong but Tesla often used Watts when he was really talking 
>Joules. The system in question has thrown sparks around 5 feet with a 
>primary energy of no more than 3J pumped 100BPS. Well worth noting 
>that I have yet to obtain that efficiency in smaller coils but all 
>that leads me to strongly suspect that the impact of low frequency 
>operation on streamer formation speed has more to do with it than 
>coil size as such. I have obtained sparks around 2 feet long on one 
>system on a single shot basis with 10J. But I think this is all 
>getting off the track anyway.
------------------------------------------------------------------
  Tesla was an electrical engineer. I doubt that he would confuse watts and
Joules.

  Note that " 3J pumped 100 BPS"  is a 300 watt coil producing 5 foot
sparks! This is certainly a record. Am I interpreting this correctly?

  John Couture