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Re: [TCML] GU5B VTTC
One thing to notice is that the VTTC is producing sword like streamers at low power indeed (at 1/3 variac rotation). At high power (full variac) the streamers are almost always branched, but it can make sometimes sword sparks to the grounded plane above.
teslina
>
>
--- On Tue, 8/25/09, futuret@xxxxxxx <futuret@xxxxxxx> wrote:
> From: futuret@xxxxxxx <futuret@xxxxxxx>
> Subject: Re: [TCML] GU5B VTTC
> To: tesla@xxxxxxxxxx
> Date: Tuesday, August 25, 2009, 1:54 AM
> Jesse,
>
> You're correct that it is important for a staccato shot to
> begin
> near the mains zero. As far as I know, everyone's
> staccato
> controller works this way, but it's possible some
> misfirings can
> occur at times due to RF interference. Nevertheless I
> know
> from my own work that there's more involved than just
> beginning
> a shot at the mains zero area. I've posted on this
> list on this
> issue over the years.
>
> Yes, in some cases two straight sparks occur. Again
> it's
> unknown exactly why this occurs. It can be very
> sensitive to
> input power. just raising the power slightly can
> cause this
> type of branching to occur, at least intermittently.
> Of course
> the increased power may affecting something else, thereby
> causing the splitting of the spark.
>
> In general the branching seems to be affected by quite a
> few
> factors. Then there's the issue of straight vs. fuzzy
> sparks, this
> is also affected by various factors.
>
> It will be all sorted out in time :)
>
> Cheers,
> John
>
> -----Original Message-----
> From: Frosty <frosty90@xxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Sent: Sun, Aug 23, 2009 8:14 pm
> Subject: Re: [TCML] GU5B VTTC
>
>
>
> John,
>
> My reasoning would be that if a single staccato 'shot'
> begins when the mains
> waveform is near 0, then the rf envelope has a smooth rise,
> which would
> create a straight spark, as has been observed in solid
> state coils. (so the
> overall appearance would depend on how any one particular
> staccato
> controller worked) But what about the ones where the spark
> is branched, but
> each branch is straight?!
>
> Cheers,
> Jesse
>
>
>
> > sword sparks vs. branched sparks. I noticed your
> sparks occasionally
> > form the single sword spark. Usually there's
> some branching in your
> sparks
> > in this video. Both ways are nice effects.
> I know some of the
> > factors that produce this branching, but not
> all. Research continues.
> >
> > Cheers,
> > John
> >
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