Re: First magnifier

To: tesla-at-PUPMAN-dot-com
Subject: Re: First magnifier
From: David Trimmell <davidt-at-pond-dot-net> (by way of Terry Fritz <twf-at-verinet-dot-com>)
Date: Wed, 21 Apr 1999 11:41:32 -0600
Approved: twf-at-verinet-dot-com
Dr. Resonance:

This sounds like a very efficient driver, but what about the added hazard
of introducing 60 Hz current into the final discharge? That could be
potentially very dangerous.

Regards,

David Trimmell

At 09:28 PM 4/19/1999 , you wrote:
>Original Poster: "Dr. Resonance" <Dr.Resonance-at-next-wave-dot-net> 
>
>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.
>>
>