The Turn Of The Century Electrotherapy Museum http://www.electrotherapymuseum.com A Compact 1.5KW Tesla Coil (36" tall x 9" diameter total) 24" Discharges The homemade double-microwave oven transformer works beyond compare.  Here is some proof!  Base is 6.625" in diameter and 10" tall.  Inside is my "Super MOT" 4kV 1.5 KW Transformer. Two Sangamo Caps, .1 mfd 2kV in series for .05mfd.  3-series 1/2" Tungsten Spark Gap with aluminum heat sinks. Front view Back View