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Re: Toroids


From: 	Mad Coiler[SMTP:tesla_coiler-at-hotmail-dot-com]
Sent: 	Tuesday, September 02, 1997 3:10 PM
To: 	tesla-at-pupman-dot-com
Subject: 	Re: Toroids


>From: 	Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
>Sent: 	Tuesday, September 02, 1997 12:38 AM
>To: 	tesla-at-pupman-dot-com
>Subject: 	Re: Toroids
>
>Hi Dale,
> 
>> From:   Dale F. Pfaffle[SMTP:pfaffle-at-tele-net-dot-net]
>> Sent:   Monday, September 01, 1997 7:33 PM
>> To:     Tesla List
>> Subject:    Toroids
>> 
>> Been reading the discussion on toroid size "More Research".  Is there 
sort
>> of a rule of thumb on the size a toroid should be, in a small system, 
with
>> regard to the size of the secondary coil?  This would be sort of a 
starting
>> size, as I gather the toroid size can increase to large proportions 
with
>> the application of more power.
>
>Right. Two considerations. First is radius of curvature. If this is 
>too large for the voltage your machine produces, sparks won't break 
>out. To get around this you either stick a small bump on the side/s 
>to assist it or increase primary energy to regain output voltage 
>lost by increasing the secondary capacitance as the toroid size is
>increased. Of course, you can only increase Vout to the extent that 
>the winding length permits before you get winding flash overs. So 
>shape vs capacitance is an issue. If you maintain the same 
>_effective_ radius of curvature you can arbitrarily increase the 
>capacitance and primary energy to match for real hot sparks :)
>and experiments suggest that increasing available output energy
>while maintaining the same output voltage still makes the sparks go 
>further.
>
>My two cents,
>Malcolm
>
>
>
Malcolm,
  I have a question for you regarding the above mentioned 'radius of 
curvature'. What curve are you talking about. For example, I have an 
8"x24" toroid. Are you talking about the curve of the 8" circle or the 
curve of the 24"? Say sparks wont break out of my toroid- would I reduce 
my size to 8"x20" or the other route, 5"x24"? Or perhaps its a 
combination of both. Am I making any sense? 

Mad Coiler