Re: TC Question

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

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 


We also made a few coils with this design.  We use a clear acrylic top with
the primary coil suspended under the acrylic top.  Sec coil winding started
1/4 inch above the acrylic top which was 1/4 inch thick.

We use a small brass square that was drilled and tapped to accept the 1/4-20
brass stud on the bottom of the sec coil.  Setup was very fast --- just
screw the sec coil into the box base and plug it in.  We also enclosed the
HV power xmfr with protect circuit in a separate box that sat 6 feet away
under the table. We used the large 8mm spark plug wire to interconnect with
HV connectors on one end.

As you mentioned, Dave, it keeps everything dangerous inside the box.

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Thursday, January 01, 2004 8:30 AM
Subject: Re: TC Question


 > Original poster: David Sharpe <sccr4us-at-erols-dot-com>
 >
 > Hi Dr. R.!
 >
 > Tesla list wrote:
 >
 >  > Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com>
 >  >
 >  > The secondary streamer isn't the problem.  It might give you a small RF
burn
 >  > but it's the primary coil that's dangerous.
 >  >
 >  > A safe solution would be to put your primary in a circular acrylic
"box"
 >  > covering the primary coil (after tuning of course).  The cylindrical
box
 >  > would have a circular side and a top but no bottom.  It would attach to
your
 >  > upper sub-base unit with some plastic "nubs" which are drilled and
tapped
 >  > for a nylon fastener.  Four would be enough to hold it securely on the
 >  > sub-base assembly.  You would, of course, leave this off until all your
fine
 >  > tuning is completed, and then replace it.
 >  >
 >
 > I built a TC to take to my son's elementary school.  I built a wooden
 > box with a switchgear grade fiberglass top.  The primary was mounted
 > inside the box (i.e. on one side of the fiberglass, flat spiral),
secondary was
 > mounted on top.  Powering transformer was a 9kV 30mA.  It worked
 > flawlessly and would provide streamers up to 12" long, was using doorknob
 > caps (~4.2nF tank capacitance).  All high energy HV was within box and
 > out of sight.  The unit looked very nice (clean appearance with no
primary)
 > and was somewhat magical to see sparks with no apparent method to
 > create the energy.
 >
 > <<SNIPPO>>
 >
 >  >
 >  > Dr. Resonance
 >  >
 >  > Resonance Research Corporation
 >  > E11870 Shadylane Rd.
 >  > Baraboo   WI   53913
 >  >
 >
 > Regards
 > Dave Sharpe, TCBOR/HEAS
 > Chesterfield, VA. USA
 >
 >
 >