Re: Practical limit to number of turns on primary ? ? ?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Resonance Research Corp. by way of Terry Fritz <teslalist-at-qwest-dot-net>" <resonance-at-jvlnet-dot-com>


There are other factors that must be considered.  Physics tells us that the
potential developed is related to the inductance and amount of current per
unit time and, in the case of resonance transformers, the rate at which
times varies.  Also, remember the fundamentals --- a larger capacitor is
capable of delivering more current than a smaller one.  Third, as Terry F.
has pointed out, the load impedance of the circuit is also important
especially to longetivity of the components especially the capacitors.
These factors may all be varied and balanced.  I prefer to use 6-12 turns
primaries on our larger coils and 15-25 turns on smaller coil systems.  One
reason is the NST's seem to work better as a power source when delivering
their current into a higher impedance primary system and secondary load.
They are just not as robust as PT's and PP's.

Resonance Research Corp.
E11870 Shadylane Rd.
Baraboo,  WI  53913
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, February 01, 2003 9:07 AM
Subject: RE: Practical limit to number of turns on primary ? ? ?


 > Original poster: "John H. Couture by way of Terry Fritz
<teslalist-at-qwest-dot-net>" <couturejh-at-mgte-dot-com>
 >
 >
 > John F -
 >
 > If each bang has the same energy why not about the same spark length? It
is
 > obvious that energy in each bang varies as shown by the varying spark
length
 > output. Also it appears there is not a spark for each bang. It is possible
 > that energy in the bang is insuficient to cause a spark in an oversized
 > toroid. This energy would then be added to the next bang to create an
extra
 > long spark.
 >
 > With an oversized toroid and without a spark the energy would return from
 > the secondary circuit to the primary circuit and the primary capacitor.
This
 > could happen with several  bangs building up to a super spark from the
 > toroid. However, this would not be very efficient because of the extra
 > losses. This is why the primary circuit and secondary circuit have to be
 > coordinated not only for tuning but also for the energy requirement.
 >
 > Coordinating the primary and secondary for best energy use would create a
 > more consistent spark output. This type of operation would be more
efficient
 > but would have the disadvantage of not having any random super sparks to
 > brag about.
 >
 > John Couture
 >
 > ------------------------------------
 >
 >
 > -----Original Message-----
 > From: Tesla list [mailto:tesla-at-pupman-dot-com]
 > Sent: Thursday, January 30, 2003 8:20 PM
 > To: tesla-at-pupman-dot-com
 > Subject: Re: Practical limit to number of turns on primary ? ? ?
 >
 >
 > Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>"
 > <FutureT-at-aol-dot-com>
 >
 > In a message dated 1/30/03 6:45:58 PM Eastern Standard Time,
 > tesla-at-pupman-dot-com writes:
 >
 >  >The main problem is to determine the exact input watt-second energy
needed
 >  >to create the extra long random spark length. In other words the longer
 >  >output spark means the coiler has found a better overall efficiency for
his
 >  >TC system. But how do you find the true input energy for that particular
 >  >spark (input J above)?
 >
 >
 > John C, all,
 >
 > Using a synchronous gap, this is very easily determined because each
 > bang size (each cap discharge energy) will be almost exactly the same.
 >
 > John
 >
 >