Re: increased coupling

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com>

In a message dated 1/28/02 3:16:26 PM Eastern Standard Time, tesla-at-pupman-dot-com
writes:


>
> 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.



Herwig,

I'm assuming this is a normal SG coil.  I often run my primary
with either 4" or 6" dia secondaries and it works fine.  I have to
lower the 4" secondary bottom somewhat below the primary to
get enough coupling.  I use about a 2" spacing also.  

Cheers,
John


>
> 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
>
>