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: "Antonio Carlos M. de Queiroz by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <acmq-at-compuland-dot-com.br>

> There is nothing wrong with using inductors in filters. It's just a
> question or proper dimensioning to get reliable filtering, that is
> always better than with resistors (and capacitors) only. Note that
> LC filters must include resistors to avoid excessive ringing. There
> are, however, problems with insulation in chokes for high-voltage
> filtering that are easy to avoid using resistors only instead.
> 
> Antonio Carlos M. de Queiroz

	I'd add to that the problems with saturation if reasonable-sized
ferrite cores are used.  Personally, I suspect that resistor/capacitor
filters, PLUS (always!!!) a safety gap across the transformer, are all
that are needed.

Ed