Re: SSTC - experiments

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Harold Weiss" <hweiss-at-new.rr-dot-com> 

Hi Dan,

One thing you missed is that the rods may constitute an antenna, and may
bring Uncle Charley for a visit.  Coils are classified as scientific
equipment and not transmitters due to no antenna.  Add that antenna and then
your in trouble.

David E Weiss

 > Original poster: "Mccauley, Daniel H" <daniel.h.mccauley-at-lmco-dot-com>
 >
 >
 >
 > Shaun,
 >
 > I don't believe your Jacob's Ladder is going to work when driven by a
 > SSTC. There are a few issues:
 >
 > 1.  Tuning - The length of the rods used in a tesla coil acts as an
 > additional capacitance to the topload
 > of your coil.  If the arc broke out at the bottom, the wire capacitance
 > (stray to ground) may be less than 1pF.
 > As it starts rising, this capacitance will increase.  And initially when
 > you turn the unit on, you will have the
 > entire length of the rod to contend with.  Therefore, the SSTC may be
 > tuned for a particular frequency, but depending on
 > where the arc is with respect to the rod, the resonant frequency of your
 > resonator may change drastically.  As a comparison
 > I use different sized rods (electrodes) on my PlasmaSonic coils to vary
 > the frequency.  A 4" rod vs. 16" rod may be as much
 > as 5pF difference.  (See my PlasmaSonic Presentations for more details
 > on exact numbers)
 >
 > 2.  Break-out.  The voltage is very high on an SSTC (compared with NSTs,
 > etc...)  You'll need to have some serious
 > corona balls and corona protection in your circuit to prevent arcs from
 > breaking out on the top of the rods or elsewhere.
 >
 > Dan
 >
 >
 >
 >  > Ok, so I have this SSTC working, 14 inch sparks straight up from the
 >  > breakout point.  I'm going to try for longer sparks and
 >  > different type of
 >  > input power.  So far I've tried half wave rectified and full
 >  > wave rectified
 >  > power - 140vac from a variac.  I put a CD on a metal stand onto of the
 >  > toroid and it started on fire and melted - Oops...... another
 >  > AOL cd bit
 >  > the dust, at least their good for something.  I want to make
 >  > a big jaccobs
 >  > ladder with it and maybe an ion motor.  What other
 >  > experiments have people
 >  > done with there SSTC.
 >  >
 >  > These things are really cool!
 >  >
 >  >
 >  > Shaun Epp
 >  >
 >  >
 >  >
 >
 >
 >