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PES Physics Information Search A Tesla coil is a device that produces a high-frequency high voltage current When working at such high frequencies it can generate spectacular lightning-like discharges in to the air The most popular use for the Tesla coils has been in the film industry where they are used whenever lightning or electrical arcs are required Scaled down versions of the tesla coil are also used in television sets The Tesla coil was invented over 100 years ago By Nikola Tesla The Tesla coil featured above is eight feet high with a toroid ring that is four feet in diameter This Tesla coil is capable of pumping out quarter of a million volts out in to the air The Tesla coil is a high frequency current generator that uses the principles of electrical resonance to produce an antinode of high potential at the top of a large coil of wire The Tesla coil is basically a high frequency transformer with the bottom end of the primary and secondary coils connected together and firmly grounded PES Physics Information Search The Illustration above is of a Tesla coil capable of producing half a million volts A Tesla coil consists of three main parts The first part is called the primary coil or simply primary The primary is simply a coil of thick wire wound around several times The driver circuitry is connected directly to the primary coil and the primary coil is wound on top of the secondary coil The second and largest part of a Tesla coil is called the secondary coil or just secondary The secondary consists of a hollow core Around the core is wound magnet wire from the bottom to top Secondary coils can be any length however a larger secondary always produces more power
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