Re: Safety Gap, Grounding, and Secondary Questions/Bipolar Oudin Considerations

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

Original poster: "Malcolm Watts by way of Terry Fritz <twftesla-at-qwest-dot-net>" <m.j.watts-at-massey.ac.nz>

Hi John, all,

On 16 Aug 2001, at 16:15, Tesla list wrote:

> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<FutureT-at-aol-dot-com>
> 
> In a message dated 8/16/01 2:53:48 PM Eastern Daylight Time,
tesla-at-pupman-dot-com 
> writes:
> 
> > Perhaps then the best application of a direct base
> >  excited(by direct line connection as in Oudin Coil)
> >  example is the magnifier, showing indeed that the
> >  direct line base excited coil to be superior to that
> >  of ordinary inductively coupled secondaries.
> 
> Harvey,
> 
> I still waiting for someone to demonstate that a magnifier
> can produce longer sparks than a classic coil for a given
> input power.  I used to be a magnifier advocate.  But not
> after I did some comparative tests.
> 
> John Freau

I admit that I too am deeply skeptical since there are no theoretical 
grounds I'm aware of for magnifiers producing more energy than is fed 
into them. Experiments I've also done have yet to show that 
magnifiers have any advantage in this respect.

    To my knowledge, there is still not a definitive formula out 
there for optimising the resonator L/C ratio to get the best possible 
result at the lowest useful breakrate as outlined by Greg Leyh for a 
given primary energy. Defining this is a personal goal in my quest to 
do the best I possibly can from a 230VAC 10A outlet. Bigger bang 
sizes seem to be better than greater breakrates at some point so I'm 
shooting for 100Hz breakrates and the largest primary energy that 
wall socket allows me assuming wallplug to primary efficiency can be 
pushed well in excess of 90%. At an ideal 100%, that is 23J. I think 
that a figure in excess of 8' is on but this remains to be 
demonstrated. Should I achieve this, it will not be with a short 
resonator, at least not in a 2-coil system. The driver system in a 
magnifier running at this primary energy would be sized in some 
inverse proportion to the resonator.

     I once fantasized about a magical 10' at 2.3kW but that would 
seem to be rather too optimistic.

"Some day, one day......."


Regards,
Malcolm