Hi Gary, Thank you, You can probably tell from most of my posts that I am
not very technical concerning this stuff, but I have an insatiable appetite
to learn. That said, I am continuing to try to improve the performance of
this little coil, since the video I have improved tuning until l now I am
getting " breakouts" from both ends. When I get the coil tuned to what I
think is optimum, which may include working to improve the primary. {I
think I have too many turns on it because I am down to using only about
three}, I will do another video, so any requests or instruction on what to
look for would be helpful.
Doug
On Sun, Feb 17, 2019 at 3:43 PM Gary Lau <glau1024@xxxxxxxxx> wrote:
> Hi Doug,
>
> I'm jealous of how easily you are able to adjust your coupling (and your
> construction skills)! Coupling should be reduced if racing sparks are
> seen, but the advice beyond that is sparse. There are these "magic"
> coupling values that are alleged to provide superior performance because
> they promote quenching on an integral number of RF cycles (see
> https://www.pupman.com/listarchives/1999/August/msg00244.html), but I've
> never heard of anyone demonstrating an observable performance correlation
> to these values. It's been a long time since this topic's been discussed.
>
> It might help if you could make numerical spark measurements (challenging,
> I know) vs. coupling adjustments, but what I think I see in your video is
> that sparks are longest with maximum coupling and less-so (monotonically?)
> with reduced coupling. Is that the extent of your observations?
>
> Regards, Gary Lau
> MA, UA
>
> On Sun, Feb 17, 2019 at 3:02 PM Douglas Johnson <doug379306@xxxxxxxxx>
> wrote:
>
> > This video may be of interest to some of the newer coilers, I am sure you
> > "old salts" are pretty familiar already with the importance of coupling!
> I
> > was not, until l played with this for a while.
> > I built this little bipolar specifically to educate myself of the
> > importance of proper coupling so maybe now I can modify the coils I have
> > already built for better performance.
> > https://youtu.be/e_TlrxQEBok
> > Thank you, Bert & David for your helpful advice on this "little" project.
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxxxxxxxxxx
> > https://www.pupman.com/mailman/listinfo/tesla
> >
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxxxxxx
> https://www.pupman.com/mailman/listinfo/tesla
>
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxxxxxx
https://www.pupman.com/mailman/listinfo/tesla