Tesla coil. A Tesla coil is an electrical resonant transformer circuit invented by Nikola Tesla around 1891.[1] It is used to produce high-voltage, low-current, high frequency alternating-current electricity.[2][3][4][5][6][7][8] Tesla coils can produce higher voltages than electrostatic machines,[citation needed] which are another source of artificial high-voltage discharges.
Tesla experimented with a number of different configurations consisting of two, or sometimes three, coupled resonant electric circuits. Tesla used these coils to conduct innovative experiments in electrical lighting, phosphorescence, X-ray generation, high frequency alternating current phenomena, electrotherapy, and the transmission of electrical energy without wires. How to build a Tesla Coil. Tesla Coils. Masters of Lightning Play Darth Vader's Theme with Musical Tesla Coils @ DucKon 18.