RE: increased coupling

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

Original poster: "Lau, Gary by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Gary.Lau-at-compaq-dot-com>

Despite the greater clearance for the 4" secondary, it's coupling can be
increased arbitrarily by just lowering it relative to the primary.
Assuming your setup allows for this, it would seem easier and neater than
what you described.

Gary Lau
MA, USA


Original poster: "Herwig Roscher by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <herwig.roscher-at-gmx.de>


Hello coilers,

As I wanted to test 4" secondaries as well as 6" secondaries in the 
same setup, I choose the clearance between the primary and the 
4" secondary to be 2". Now I'm concerned whether it will be 
possible to pump enough power into the 4" secondary despite of 
this loose coupling.

Therefore I'm planning to increase the coupling by winding some 
turns of thick wire around the base of the secondary as well as 
around the inner turns of the primary (sorry - difficult to explain) and 
to connect them. Of course the direction of these windings (i.e. cw 
or ccw) has to be correct.

Has anybody tried this already? Could this work?

Regards,

Herwig