Re: PFC and PVC caps

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Antonio Carlos M. de Queiroz" <acmdq@xxxxxxxxxx>

Tesla list wrote:

> Original poster: Bobby Amaya <dimon20042004@xxxxxxxxx>
> Hi all,
> Can someone please tell me is there some kind of equation to figure 
> out how much capacitance I need for PFC on a transformer? And what 
> kind of capacitors am I supposed to use for this? And while on the 
> subject of capacitors, has anyone ever tried to use PVC pipe as the 
> dielectric of a capacitor? Any thoughts on this would be appreciated }:-)

I tried to make a variable capacitor using a PVC pipe, to use in an
experimental magnifier.

This was the result:
http://www.coe.ufrj.br/~acmq/tesla/567c2.jpg
It punctured after a few more seconds. The voltage was quite high, however.
I made another with a flat acrylic plate (2.5 mm) as dielectric, that 
resisted well.
http://www.coe.ufrj.br/~acmq/tesla/mres6c2.jpg
The capacitance was about 250 pF. Too small for a primary capacitance in
a Tesla coil, although more could be put in parallel.

Antonio Carlos M. de Queiroz






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