Re: Transformerless Tesla coil

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

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
> 
> 
>