Thanks Gary,
The safety gap is between the two stationary electrode holders. I also have
a filter to protect the NST. This filter has a safety gap in parallel with
the NST. This gap never fired.
The primary cap size is .028 uf.
As far as the smaller arcs, these appeared to arc between the firing
electrode and the one 90 degrees away following the copper ring connecting
the four electrodes.
Thanks again,
Tim Flood
On Wed, Mar 26, 2014 at 7:39 PM, Gary Lau <glau1024@xxxxxxxxx> wrote:
> Hi Tim,
>
> Running your coil with no secondary results in your caps seeing many times
> the RMS current than it otherwise would. If you had only run it for a few
> seconds I would not be concerned about that.
>
> I didn't understand what you meant by "there are smaller arcs running
> around the conductor ring on the disc". Kudos to you for having a safety
> gap - I assume in parallel with the RSG?
>
> What size primary cap are you using?
>
> Regards, Gary Lau
> MA, USA
>
>
> On Wed, Mar 26, 2014 at 6:46 PM, Tim Flood <tfloodrr@xxxxxxxxx> wrote:
>
> > Thanks guys for the input. Sounds like I'm the dummy!
> >
> > I hope I didn't run long enough to due permanent damage. It was run that
> > way for only a few seconds, three times. The caps were not warm nor had
> any
> > visible anomalies. I'll check the MMC value tomorrow and the transformer
> > output using a jacobs ladder. Everything is at work so I'll have to wait
> > until tomorrow.
> >
> > Thanks again. What are the chances Imay not have done permanent damage?
> >
> > Tim
> >
> >
> > On Wed, Mar 26, 2014 at 5:02 PM, teslalabor@xxxxxxxxxxx <
> > teslalabor@xxxxxxxxxxx> wrote:
> >
> > > Very Bad idea. When doing such Experiments you have to use at least a
> > > dummy load in Form of halogen bulbs, which replaces the primary. When
> you
> > > simply Run it without secondary, you kill your caps and neon, i think
> > thats
> > > what happened in Your case.
> > >
> > > Gesendet mit meinem HTC
> > >
> > > ----- Reply message -----
> > > Von: "Tim Flood" <tfloodrr@xxxxxxxxx>
> > > An: "tesla@xxxxxxxxxx" <tesla@xxxxxxxxxx>
> > > Betreff: [TCML] Sputtering Gap
> > > Datum: Mi., Mär. 26, 2014 21:25
> > >
> > > Could really use some help.
> > >
> > > Just completed a new 15/60 NST powered coil with a SRSG. With the tank
> > > circuit completely wired and the secondary removed I thought why not
> > check
> > > the operation of the rotary gap. The first time I powered up it ran
> fine,
> > > firing smoothly up to the max variac setting.
> > >
> > > Subsequent power-ups resulted in the gap sounding like gun fire. The
> > safety
> > > gap on the SRSG is firing, the arcs at gap alignment vary in intensity
> > and
> > > there are smaller arcs running around the conductor ring on the disc.
> > >
> > > The rotor is 5" diameter with four 1/8" carbide electrodes turning at
> > 1800
> > > RPM.. There are two stationary electrodes on the front side. Electrode
> > > spacing is .030" per gap.
> > >
> > > Thank you,
> > >
> > > Tim Flood
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