All his inventions were electricity related.
He would see the idea in his mind, wrote the plans and had it made.
A Tesla coil is a type of resonant transformer circuit invented by Nikola Tesla around 1891. It is used to produce high voltage which Tesla used to test a way to conduct wireless electricity. Something about Tesla was that his inventions were not an accident like most inventions. He visioned the inventions in his head and then make them work. The Tesla coil experiments were done or conducted in the Colorado Springs laboratory. We could think that the first Tesla Coil was built there but the idea could be in his head way back from New York when he was working with George Wentishouse.
Tesla's inventions worked properly without improvements although improvements came after his death when more modern technologies came around.
nikola tesal
Nikola Tesla never made a second tour for electricity. He only did one tour which lasted his whole life.
The main reason is that he was told he would get a better chance to make his inventions possible. He learned from his university teacher that his ideas would not be welcome where he went to college.
In new york in 1844
He did not mentioned or wrote about it.
Sadly, Nikola Tesla did die almost penniless. Tesla had much opportunity to make lots of money, however Tesla was not interested in making money. Tesla's passions were creating things for societal use, to help out all of mankind.
Before his 40th birthday, Tesla had been a millionary but he died pennyless.
The main purpose for the coil was to study how to bring energy without wires.
He held 272 patents in 25 countries, with 112 patents in the United States alone. The Tesla coil lives today wich is the basis of wireless communications. All homes are powered with alternate current wich Tesla was the first man to know how it works and made the firt machine to make it.