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Tesla coil circuits can be classified by the type of "excitation" they use, what type of circuit is used to apply current to the primary winding of the resonant transformer: [6] [22] [23] Spark-excited or Spark Gap Tesla Coil (SGTC): This type uses a spark gap to close the primary circuit, exciting oscillations in the resonant transformer ...
A second type of spark gap that had a similar quenching effect [15] was the "rotary gap", invented by Tesla in 1896 [92] [93] and applied to radio transmitters by Reginald Fessenden and others. [ 17 ] : p.359–362 [ 79 ] It consisted of multiple electrodes equally spaced around a disk rotor spun at high speed by a motor, which created sparks ...
English: Circuit diagram of a unipolar Tesla coil, a spark-excited resonant transformer circuit invented in 1891 by Serbian-American inventor Nikola Tesla, which produces high voltage, radio frequency alternating current at low current levels. This is a modern unipolar version of the circuit used for entertainment coils, in which one side of ...
In the majority of Tesla's experiments, he used machinery of his own design to produce the Tesla effect. These early coils would use the "disruptive" action of a spark gap in their operation. The setup can be duplicated by a Ruhmkorff coil, two condensers (now called capacitors), and a second, specially constructed, disruptive coil.
A spark plug.The spark gap is at the bottom. A spark plug uses a spark gap to initiate combustion.The heat of the ionization trail, but more importantly, UV radiation and hot free electrons (both cause the formation of reactive free radicals) [citation needed] ignite a fuel-air mixture inside an internal combustion engine, or a burner in a furnace, oven, or stove.
Breit and Tuve's 5 MV Tesla coil used as particle accelerator, 1928. In addition to its use in spark-gap radio transmitters and electrotherapy described above, the Tesla coil circuit was also used in the early 20th century in x-ray machines, ozone generators for water purification, and induction heating equipment.
The last gap isolates the output of the generator from the load; without that gap, the load would prevent the capacitors from charging. To create the output pulse, the first spark gap is caused to break down (triggered); the breakdown effectively shorts the gap, placing the first two capacitors in series, applying a voltage of about 2 V C ...
The main circuit basically consists of concentric rings forming electrical dipole antennas having capacitive gaps opposing each other by 180° (called Lakhovsky antennas). The circuit is fed with high voltage and high frequency impulses from a generator, usually a spark gap Tesla coil or Oudin coil.