Matthew,
Gurrent limiting by a series of resistors. In my work, I have used 10pcs.
of VR37 resistors each 12Mohm.
But limit down to less than 1mA
The purpose here is to limit the current to a level where there is only a
faint corona at the tips of the charging comb. You may be able to hear
it, but otherwise it should only be visible in total darkness. Too much
current, and there is the possibility that arc discharge takes place, and
this ruins the belt in short order.
Hope this helps, Finn Hammer
----- Original meddelelse -----
> Fra: Matthew Sweeney <msweeney23@xxxxxxxxx>
> Til: Tesla Coil Mailing List <Tesla@xxxxxxxxxx>
> Dato: Ons, 09. sep 2015 07:11
> Emne: Re: [TCML] High voltage diodes
>
> Oh I forgot to mention, any good suggestions for current limiting
> here?
> 30ma is far too much for a VDG am I'm sure most of it's going to be
> wasted
> anyway. Do i need a good old variac or some other cheaper
> alternative? Will
> a light dimmer really work i this situation?
>
> Thank you!
>
> Matt Sweeney
>
>
> On Wed, Sep 9, 2015 at 12:01 AM, Matthew Sweeney
> <msweeney23@xxxxxxxxx>
> wrote:
>
> > Hello, all does anyone know a good source for HV diodes for
> rectifying
> > NST? Specifically up to 15KV at 30ma I would assume I need to
> account for
> > RMS so probably around 20KV.
> >
> > I think I can get away with just one for half wave and maybe a cap
> for
> > smoothing it a bit, but that would need to be a pretty decent cap
> to deal
> > with 60HZ at that voltage.
> >
> > I'm using this to build a HV DC fed VDG does anyone have any hints
> or
> > suggestions? I know I can find both diodes and caps in microwave
> ovens but
> > its a pain to pull them apart and they are commonly too low
> voltage.
> >
> > I have found a few online retailers just wondering if there may be
> an
> > alternate source, or anyone have some for sale etc.
> >
> > Thanks for any help!
> >
> > Matt Sweeney
> >
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
Mvh. Finn Hammer
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla