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Re: First magnifier

to: Kevin


You might consider eliminating the first pri-sec configuration altogether.
You wind a large primary with approx 40 turns of 1/4 inch copper tubing on
the lower part of the coilform and then wind upper part with #10 or #-at-12 AWG
which feeds directly off the top of the 40 turn primary copper "feeder".
This is similar to an autotransformer effect and serves as a fabulous driver
for magnifiers.  The advantage is there is no driver pri-sec flashover to
insulate for as the driver coil consists of a lower section primary driving
an upper section secondary in a single vertical plane.  The output from this
driver system is used to drive your resonator coil.  The hv tap feeds the
grounded bottom of the driver and the hot end taps somewhere up the primary
copper tubing to achieve the proper total system resonance with both your
driver and resonator systems.

A fiberglass water tank often works well as a coilform.  Another source for
larger forms is a farmer's coop supply store which sells large fiberglass
tanks for farm equipment chemical storage.

Regards,

Dr.Resonance-at-next-wave-dot-net


-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Monday, April 19, 1999 1:30 AM
Subject: First magnifier


>Original Poster: Teslaman-at-aol-dot-com
>
>All
>
>  After several years of putting it off, I built my first magnifier with
good
>results.  The driver is a 10.5" P.V.C. tube with 16" winding length of #14
>T.H.H.N. solid copper wire.  Primary winding 10 turns 2" aluminum ribbon
flat
>spiral tapped at 5 turn with a 0.05 uF cap.  Extra coil 4" x 22" P.V.C.
with
>a 20" winding length of #24 enamel wire.
>
>  Results?  101" max spark at around 8 kVA input.  The extra coil was
heavily
>top loaded with 3 toroids of different widths.  Primary to secondary
coupling
>seems to be the most critical adjustment.  Too little and there is a lot of
>power input for little spark output, too much and breakdown between pri. &
>sec.  The beauty of this design is in being able to assemble the system
>outside quickly.  All that's needed is the extra coil, insulated
stand/base,
>toroid and transmission line.  The driver circuit stays inside ready to go
>any time.  This makes it nice for that last minute decision when the wind
>quiets down.
>
>  Another driver was made using #14 wire on a 6.5" P.V.C. tube inside of a
>8.5" P.V.C. tube tilled with mineral oil,  The copper tube primary coil was
>wound on the outside of the 8.5" tube.  It performed great to 1.5 kVA
giving
>off 60" sparks from same extra coil as above.  When the power was cranked,
a
>breakdown occurred and a pin hole was made through the tube and oil seeped
>out.  Design sounded good, but too many problems.
>
>  Interesting note, extra coils larger than 4" dia. did not work good at
all.
> Even when properly tuned, the output was no more than 3' regardless of
>input.  The input was increased to over 10 kVA to check operation, spark
>would only go 3' and stop.
>
>  It appears simply as I see it that small drivers = small extra coils
>(resonators), large drivers = large extra coils. Comments welcomed.
>
>Kevin E.
>