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A Tesla coil is an electrical resonant transformer circuit designed by inventor Nikola Tesla in 1891. [1] It is used to produce high-voltage, low-current, high-frequency alternating-current electricity. [2] [3] Tesla experimented with a number of different configurations consisting of two, or sometimes three, coupled resonant electric circuits.
Nikola Tesla patented the Tesla coil circuit on April 25, 1891. [4] [5] and first publicly demonstrated it May 20, 1891 in his lecture "Experiments with Alternate Currents of Very High Frequency and Their Application to Methods of Artificial Illumination" before the American Institute of Electrical Engineers at Columbia College, New York.
With the success of Tesla's A.C. system, it soon became the preferred method of generating electricity worldwide. Tesla worked on a number of other inventions, including a transformer that would change a low voltage to a high voltage by means of safe A.C. electric current. This transformer came to be known as the Tesla coil.
Tesla coils achieve great gain in voltage by loosely coupling two resonant LC circuits together, using an air-core (ironless) transformer. Unlike a conventional transformer, whose gain is limited to the ratio of the numbers of turns in the windings, Tesla coils' voltage gain is proportional to the square root of the ratio of secondary and ...
Tesla coils utilize resonance, are lightweight, and do not require semiconductors. The largest scale sparks are those produced naturally by lightning . An average bolt of negative lightning carries a current of 30 to 50 kiloamperes, transfers a charge of 5 coulombs , and dissipates 500 megajoules of energy (120 kg TNT equivalent , or enough to ...
The Tesla Coil Builder's Guide to The Colorado Springs Notes of Nikola Tesla. Tesla Coil Builders of Richmond. Margaret Cheney, (2001). Tesla: Man Out of Time. 400 pages. Margaret Cheney, Robert Uth, Jim Glenn (1999). Tesla, Master of Lightning. 184 pages. Carol Dommermuth-Costa (1994). Nikola Tesla: A Spark of Genius. 128 pages. Thomas Valone ...
Henry Leroy Transtrom (1885–1951) was an American inventor and showman who worked with high voltage electricity.His book, Electricity at High Pressures and Frequencies, [1] (1913) is still used as a guide for constructing homemade Tesla coils.
Streamer discharges into the air from the high voltage terminal of a large Tesla coil. The streamers form at the end of a pointed rod projecting from the terminal. The high electric field at the pointed end causes the air to ionize there. Video clip of streamers from a Tesla coil.