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TL;DR: Relive the science fair with the DIY Tesla Music Coil Kit, on sale for $399.99 as of Nov. 7. Now you can bring what you see in your head to life with the DIY Tesla Music Coil Kit. This kit ...
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.
This is a modern unipolar version commonly used in entertainment coils, with a toroidal-shaped metal capacitive load E on the high voltage terminal. The primary circuit is shown connected to the primary winding L1 with a variable tap, so that the primary and secondary coils can be adjusted to resonance.
The extra coil or helical resonator can be physically separated from the two close-coupled coils which comprise the master oscillator or driver section. The power from the master oscillator is fed to the lower end of the extra coil resonator through a large diameter electrical conductor or pipe to minimize corona.
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English: Circuit diagram of a modern unipolar W:Tesla coil, a spark-excited resonant transformer circuit which produces high frequency high voltage alternating current at low current levels. It was invented by Serbian-American inventor Nikola Tesla in 1891.
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This is a modern unipolar version of the circuit used for entertainment coils, in which one side of the secondary is grounded and the other side is connected to a toroidal-shaped capacitive high voltage terminal. A slightly different form of the circuit, with the positions of the capacitor and spark gap exchanged, is found at Tesla coil 3.svg