Piffard Hyperstatic Transformer - Static Electric powered Tesla Coil (fwd)

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---------- Forwarded message ----------
Date: Mon, 06 Aug 2007 22:39:49 +0000
From: Jeff Behary <jeff_behary@xxxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Piffard Hyperstatic Transformer - Static Electric powered Tesla Coil

Hey All,

One of the most famous Tesla Coils from old medical books is the "Piffard 
Hyperstatic Transformer".  It was an early Tesla Coil from 1900 that was 
powered by a static machine.  Here is the original article, and a photo of 
the device.
http://www.electrotherapymuseum.com/2007/Piffard/index.htm

It used two 4" diameter leyden jars and had the primary coil wound on the 
inside of the secondary coil...this was actually common in early Tesla 
Coils.  It was embedded in wax and rosin to prevent spark-overs.

It was used to treat skin conditions very successfully, and was documented 
later in 1908 as having the highest operating frequency of any coil on the 
market at that time.  It was manufactured by Waite & Bartlett, a company 
that sold mainly floor model static electric machines and induction coils 
relating to medical and X-Ray use.

One of these days we'll try and make one.

Jeff Behary, c/o
The Turn Of The Century Electrotherapy Museum
http://www.electrotherapymuseum.com

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