Re: Transformerless Tesla coil

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

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

Tesla list wrote:
> 
> Original poster: "Liviu Vasiliu by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <teslina-at-yahoo-dot-com>
> 
> Wow, great results! I started myself a project like
> this sometime ago but it was never finished. I
> intended to build a very big accordable primary and
> use multiple secondaries, so i can tune each of them
> at its resonant frequency without changing the
> primary. The project would be fesible in both ways
> (alimented like classical TC or using a VTTC
> driver)....it would be a multifunctional TC.
> 
>  teslina
> >
> >
> --- Tesla list <tesla-at-pupman-dot-com> wrote:
> > Original poster: "Antonio Carlos M. de Queiroz by
> > way of Terry Fritz <twftesla-at-qwest-dot-net>"
> > <acmq-at-compuland-dot-com.br>
> >
> > Hi:
> >
> > I have just set up a page with an initial
> > description of my
> > directly coupled Tesla coil, with some pictures:
> >
> > http://www.coe.ufrj.br/~acmq/tesla/mres4.html
> >
> > The system is not better than a conventional coil
> > (the design
> > is more restricted), but works too. Some ideas can
> > be useful,
> > as how I assembled the MMC capacitor, how I
> > connected the
> > secondary coil, and a telescopic antenna as a
> > tunable top load.
> > I will now try to increase the output power by
> > moving to mode
> > 20-21, equivalent to a conventional coil with
> > coupling coefficient
> > 0.0488 and voltage gain 20.5, what will double the
> > output voltage and multiply the power by 5. A
> > question of making
> > a 5 nF MMC and a 67 uH L1 inductor.
> >
> > Antonio Carlos M. de Queiroz

Question on this subject for Antonio:

	Have you looked at a more elaborate design such as using the T or PI
equivalent of a conventional double-tuned TC?

Ed