The Turn Of The Century Electrotherapy Museum
(C) Jeff Behary 2007

Piffard Hyperstatic Transformer Article

Waite & Bartlett Static Machine

Despite Piffard's own words in the article, the Tesla Coil later described in the commercial
unit had the primary wound on the outside and the secondary wound on the inside.  The primary was
said to be wound on either a glass or hard rubber tube, the whole being filled with a wax mixture.