Re: [TCML] spark gap substitute...?

["Paul Brodie" <pbbrodie@xxxxxxxxxxxxx>]

I forgot to mention that I am using DC for my TC.
Paul
Think Positive

----- Original Message ----- 
From: "Phillip Slawinski" <pslawinski@xxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Wednesday, January 27, 2010 9:07 AM
Subject: Re: [TCML] spark gap substitute...?


> Daniel
>
> It might work, but there are several difficulties you would need to
> overcome.  You would need antiparallel diodes since you're switching an AC
> load.  Also SCRs are pretty slow in terms of switching speed.  You would 
> be
> better off using IGBTs as a replacement for the spark gap <see
> http://wiki.4hv.org/index.php/SISG>
>
> -Phillip Slawinski
>
> On Tue, Jan 26, 2010 at 22:11, Daniel Lee <leedanieljoseph@xxxxxxxxx> 
> wrote:
>
> > Hello all,
> >
> > I'm having difficulty getting my stationary spark gap to work properly. 
> > I
> > am wondering; is it possible to use an optocoupler (triggered by a 555
> > timer
> > or maybe a function generator) to trigger a pair of massive SCRs to 
> > imitate
> > the function of a spark gap?
> > The biggest SCRs I've seen can handle 1kv (probably rated in DC, but i'm
> > not
> > sure), so it couldn't be too big of a coil.  I'm just wondering if this
> > would work or if I'm missing something obvious.
> >
> > Thanks,
> > daniel
> > _______________________________________________
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