Re: ballast

[Tesla list <tesla@xxxxxxxxxx>]

Original poster: "Daniel McCauley" <dhmccauley@xxxxxxxxxxxxxxxxxxxxxxxxxx>

No SSTCs or any coils these days for that matter.
I've been busy enjoying other interests (astronomy / astrophotography) and
also preparing for our
baby which is coming a several months from now.

Dan


 > We stock them.
 >
 > Thanks for your good wishes.  You building any real big DRSSTCs these
days?
 >
 > Dr. Resonance
 >
 >
 >  > Where can one find two 10kVA Supercil grade C cores?
 >  >
 >  > Anyways, glad to see you back on the list.  Hope you are feeling better
 > and
 >  > make a full recovery!
 >  >
 >  > Dan
 >  >
 >  >
 >  >  > You can use two 10 kVA Supercil grade C cores strapped together with
 >  >  > stainless steel strapping (don't use steel or iron).  Cross section
 > needs
 >  > to
 >  >  > be approx 3 1/2 x  4 inches depending on the power level you intend
to
 >  >  > operate.  These cores are gapped with plastic or Nomex on both sides
at
 >  > .080
 >  >  > inches.  Total inductance required is around 140 mHy if you are
running
 > a
 >  >  > variac for voltage control.  This requires approx 120-130 turns of 8
to
 > 10
 >  >  > AWG wound on an insulating box around the core.  Don't use 12 AWG as
it
 >  > will
 >  >  > overheat because the core is bumping up against saturation on it's
 > current
 >  >  > peaks.  Also a good idea to a small 100 CFM cooling fan across the
 > reactor
 >  >  > windings.  Space wind the windings with some 1/4 x 1/4 inch phenolic
 >  > sticks
 >  >  > to provide good air circulation.
 >  >  >
 >  >  > We run this type of reactor at 7-12 kVA levels with our pole xmfrs.
 >  >  >
 >  >  > Dr. Resonance
 >  >  >  >
 >  >  >  > Can anyone please tell me how to design a ballast or
 >  >  >  > what I could use as a ballast for a pole pig? E-mail
 >  >  >  > me at  dimon20042004@xxxxxxxxx
 >  >  >  >
 >  >  >  > Thanks in advance:)
 >  >  >  > Robert
 >  >  >  >
 >  >  >  >
 >