In 2009 I made a Tesla coil system for a children’s fare in Aalborg, Denmark. It was a rather big project as I had to make the Tesla coil and Faraday cage myself. It took me just around two months to build the system, and I am rather proud about the results.
Furthermore this was the test coil for Finn Hammers “Predikter” DRSSTC driver, and it didnt have a single fault in the 4 months it was at the childrens fare. This driver is now used on one of the biggest Solid State Tesla Coils in the world, and the phase lead feedback part is now beginning to show up in coils around the world. For more information on this driver, please see the paper Finn wrote here http://hammertone.com/temp/The%20Hammertone%20predikter.pdf