Re: VTTC provisional results

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

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


Ed Phillips wrote:

> > Been there, done that.
>  Sorry about that!

Ed,

Never mind!  :-)
 
> The drift would still be there if self excited, for that matter
- I assume(!) that a self excited circuit would adjust itself to its 
sweet point.
 
> but perhaps you need to increase the tank capacitor 
substantially and at the same time reduce the coupling to the 
secondary. 
- I already reduced the coupling step by step, looking for the 
optimal tank cap each time and found, that with lower couplings I 
could increase the capacity a little bit only. The explanation might 
be that by lowering the coupling the capacitance between the coils 
decreased and a larger capacity was necessary to retune the 
system.

Unfortunately there was no distinct increase in output power.

Regards,

Herwig