Tesla Coil

While I was finished watching one episode of an anime series scheduled on this day I switched the program to the ‘’Discovery Channel‘’ and in that documentary I saw how they explained the concepts of a Tesla Coil and how it can create a large high voltage spark that look like it was dancing in the air.

The explained that basically a tesla coil is and electrical device based on a type of resonant transformer circuit invented by a man named Nikola Tesla around the year 1891.  Later that day  went to an internet business centers and researched in http://en.wikipedia.org/wiki/Tesla_coil  to know more about Tesla coils and found out that Tesla coils is said to produce high voltage, low current, high frequency alternating current electricity. Tesla coils also produce higher current than the other source of high voltage discharges, electrostatic machines. The Tesla coil circuits were used commercially in spark gap radio transmitters for wireless telegraphy until the year 1920s also in pseudo medical equipment such as electrotherapy and violet ray devices. Today their main use is for entertainment and educational displays. 

In the concept of how a Tesla coil can produce a high voltage, low current, high frequency alternating current electricity from a 220-V  60-HZ power source.

The concept is that an AC source goes through a High voltage Step-up transformer where the output is increased, then it goes through multiple high voltage tank capacitor and a spark-gap and The Tesla coil primary winding connected in series.

  In each circuit experiment, the AC supply transformer charges the tank capacitor until its voltage is sufficient to break down the spark gap. The gap suddenly fires, allowing the charged tank capacitor to discharge into the primary winding. Once the gap fires, the electrical behavior of either circuit is identical. 

However, in the typical circuit the spark gap's short circuiting action prevents high frequency oscillations from 'backing up' into the supply transformer. This in turn allows the supply to move up to the primary and secondary winding until it reaches the top where it is discharged as a high voltage spark.

Here is an image shown below:

By:Leonardo Regino