Bipolar Horizontal Coil - 16" Discharges (fwd)

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---------- Forwarded message ----------
Date: Sat, 22 Sep 2007 23:22:18 +0000
From: Jeff Behary <jeff_behary@xxxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Bipolar Horizontal Coil - 16" Discharges

Hey All,
 
Here is a new coil based on some ideas from Thomas Stanley Curtis texts.
http://www.electrotherapymuseum.com/2007/TSC/index.htm
 
A bit strange, but similar to the designs used for early wireless experiments and X-Rays.
6.25" diameter Secondary Coil wound in two sections 10.5" long each on a 24" ABS form.  Midpoints are connected together and grounded to Primary Coil.Primary coil is 2" wide copper strap, 1 1/2 turns, 12" diameter.  Secondary coils are wound with 18 AWG enameled wire, about 230 turns per section.
Adjustable capacitor was used for tuning,  .020 mfd seemed to work best without any dischargers.  (This'll be increased to around .024 mfd when thedischarge terminals are added).
The power transformers are two MOTS wound with primary coils in anti-parallel and secondaries in series with a reactance coil to limit the currentfrom 15 - 20 amps.  The spark gap is a 2-series quenched gap, 3/4" diameter tungsten.  
 
Discharge at 18" is pure brush from each terminal, 6-8" long.  At 16", sparks will occasionally jump the distance about every 2 or 3 seconds.  At 12 - 14" hot discharges occur between the terminals.  
Jeff Behary, c/o The Turn Of The Century Electrotherapy Museum http://www.electrotherapymuseum.com 
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