Tesla Coil

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Tesla coil

[′tes·lə ‚kȯil]
An air-core transformer used with a spark gap and capacitor to produce a high voltage at a high frequency.

Tesla Coil


an electrical transforming device consisting of an air-core transformer, a spark gap, and a capacitor. The primary winding of the transformer consists of a few helical turns of thick copper wire. The secondary winding, which is located within or next to the primary winding, consists of a large number of turns of thin insulated copper wire. The primary winding is connected to an AC source via the spark gap and capacitor. Oscillations of high voltage (up to 7 × 106 volts) and high frequency (up to 1.5 × 105 hertz) are excited in the secondary winding, in which resonance conditions are satisfied.

The Tesla coil was invented in 1891 by N. Tesla. In the early period of the development of radio engineering, it was used at radio stations as a high-frequency oscillator; by the mid-1970’s it was used only for demonstration purposes.

References in periodicals archive ?
The Tesla coil exhibit is especially designed to work like a jukebox.
Meanwhile, gallery two hosts Canadian Alexandre Burton's Impacts, an interactive "live" sculptural installation of Tesla coils fitted with a glass pane and suspended from the ceiling, where the presence of a visitor activates an audio and visual experience involving arcs of electricity.
The public will be able to participate even more intimately by playing with the controls for the tesla coils, turning them up or down on Ultrabook laptops provided by Blaine's sponsor, Intel.
Dressed in a chainmail suit, he is "attacked" by lightning from giant Tesla coils - high voltage transformers.
They make music using giant singing Tesla coils which produce electrical arcs up to 12 feet long, each one acting as an instrument with a sound reminiscent of a synthesizer.
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There are many bioelectromagnetics (BEM) devices and instruments emerging that are based on high voltage Tesla coils.
Tesla coils, rotational physics, vortex energy, the energy grid/harmonics, etc.