A Tesla coil is an electrical resonant transformer circuit invented by Nikola Tesla around 1891. It is used to produce high-voltage, low-current, high frequency alternating-current electricity. Tesla experimented with a number of different configurations consisting of two, or sometimes three, coupled resonant electric circuits. continue..
Tesla Coil Image

The Tesla coil is one of Nikola Tesla's most famous inventions. It is essentially a high-frequency air-core transformer. It takes the output from a 120vAC to several kilovolt transformer & driver circuit and steps it up to an extremely high voltage. Voltages can get to be well above 1,000,000 volts and are discharged in the form of electrical arcs. Tesla himself got arcs up to 100,000,000 volts, but I don't think that has been duplicated by anybody else. Tesla coils are unique in the fact that they create extremely powerful electrical fields. Large coils have been known to wirelessly light up florescent lights up to 50 feet away, and because of the fact that it is an electric field that goes directly into the light and doesn't use the electrodes, even burned-out florescent lights will glow. continue..

Let's take a look at what Nikola Tesla -- a man who died broke and alone -- has actually given to the world.  For better or worse, with credit or without, he changed the face of the planet in ways that perhaps no man ever has. continue..

About 100 years ago Nikola Tesla invented his "Tesla Coil". For about 70 years hobbists and engineers alike have been constructing their own Coils.  At this point you may be asking yourself why? What is it that these people find so fun about building a large lightning generator? Well perhaps the best answer to both questions is that they want to have fun with electricity. They want to see how large the discharges from their coil can be. It is like any other hobby...with a decidedly dangerous element. But let's begin with a little history of some uses that the Tesla Coil has seen, beginning with Nikola Tesla's intended applications. continue..

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