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Re: [TCML] Alternate to a spark gap

Actually, in a well-operating coil, the majority of the acoustic noise is
coming from the top load sparks.  Trying to silence just the gap will have
only a minimal impact.  Of course, if your coil is badly tumed and producing
very little spark, then a larger percentage of the noise will be from the

No, you can't switch the power to the NST as an alternative to the gap.  The
gap is absolutely essential and nothing done at the primary side can replace
that.  The NST absolutely will not work doing what you suggest.

Regards, Gary Lau

On Wed, Aug 18, 2010 at 8:06 PM, Brian Hall <brianh4242@xxxxxxxxxxx> wrote:

> I noticed that one of the loudest parts of a spark gap coil is the spark
> gap itself.
> So, could I just turn my 15/30 NST on and off rapidly through a 555 driving
> a mosfet or power transistor (than can handle house current, or even dialed
> down a bit through a variac) ?  Would it do any harm to the primary of the
> NST, being on and off that way?  As its usually the secondary alternating
> rapidly through th SG...
> and by the way I happened to notices they have mosfets at radioshack in the
> parts drawer now for about 2 bucks
> ----------------------------------
> Brian Hall
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