Shulou(Shulou.com)11/24 Report--

Hello, everyone. This is Radio Frequency School.

Let's talk about AC (Alternating-Current) today. Why do those who engage in radio frequency say AC in reverse? The RF signal in the circuit is a very high frequency alternating current performance.

When we first came into contact with electricity, most of us started with direct current DC. Direct current is a current flowing in a constant direction or a voltage of constant polarity, usually generated by batteries. In terms of current flow, the direction of direct current flow is constant, while alternating current constantly changes the direction of current flow. As shown below:

On the question of whether alternating current or direct current is better or worse, we people today seem to support alternating current, because alternating current has entered our daily life. Our electricity is 220V, 50Hz alternating current. However, the century war on electricity more than 100 years ago is still worth recalling.

If Edison was the winner, what would our world look like today?

There is no doubt that in many articles today Tesla is called the closest person to God, and that God has been deified, while Edison slowly regresses from the greatness of our childhood memories. But Edison was undoubtedly the authority on electricity at the time-known as America's greatest inventor.

We first know Edison, is his light bulb experiment, after countless experiments finally invented the light bulb. But the truth is that he bought patents from Henry Woodward and Matthew Evans in 1880, and then he hired a team to help him refine the patents he made a fortune with.

The current wars began in 1882, when Edison invented the direct current electrical system and hired a young Serbian genius named Nikola Tesla to help him improve his electrical equipment. While working for Edison, Tesla discovered how to make his own electrical system and began building AC systems that used transformers to boost voltage for long-distance transmission and then buck voltage for indoor lighting, more efficient and less costly, to compete directly with Edison's DC electrical system.

In 1888, George Westhouse purchased the patent for the Tesla alternator. With the addition of many other power companies and the rapid spread of AC power, Edison's company claimed that AC was dangerous and inferior to patented DC power systems. Tesla's alternator is gaining popularity nationwide faster than DC alternatives. Edison began publicly questioning the safety of the system Tesla created, saying,"Like death, Westinghouse will kill a customer within six months of installing a system of any size. He worked hard to discredit Tesla, and to win the battle Edison began giving the kids who lived around his New Jersey lab 25 cents for each stray dog they brought along for his public demonstration of electrocuting these beautiful creatures into alternator electricity. Make sure it's clear he's using alternating current. Edison will electrocute calves, horses, and even elephants. The animals died slowly and were very disturbing to watch from a crowd. Tesla has no interest in competing, let alone killing innocent animals. After Edison's gruesome executions of animals, he showed off a new invention he used to kill people, called the "electric chair."

Eventually, lower AC distribution costs prevailed. By 1890, a dozen electric power companies had merged into three; Edison (now Edison General Electric), Thomson Houston, and Westinghouse.

In 1893 Tesla's AC transmission system proved superior to existing DC transmission systems. Westinghouse has won the bid to power the World's Colombia Exposition. Nikola Tesla has officially won the battle for electricity.

Eventually, Thomas Edison left the power business and the company he founded began adding AC technology to its systems.

As his popularity increased following the success of the Columbus World Exposition, Tesla began to gain fame among the social circles of the power elite. Everything was going Tesla's way until, in the early hours of March 13, 1895, the South Fifth Avenue building, where Tesla's lab was located, caught fire.

It started in the basement of the building and was so intense that Tesla's fourth-floor lab burned down and collapsed to the second floor. The fire not only frustrated Tesla's ongoing project, but destroyed a series of early notes and research materials, models and demonstrations, including many that had been exhibited at the 1893 Colombia World's Fair.

Another man also had a dream at the time, of controlling and monopolizing all available assets, electricity, railways, steel mills and communications, allowing only those who could afford to pay him to use them, in order to maximize his interests at the expense of ordinary people. The man with the dream held a majority stake in Thomas Edison's company and was angry at Tesla for losing the lighting bid for the World's Colombia Exposition. Tesla's contract to win the Niagara Falls power plant added insult to injury. The man's face was white with anger. That person is John Pierpont JPMorgan or JPMorgan Chase itself.

JPMorgan Chase is an American financier, banker and art collector who dominates corporate finance and industry consolidation. At the height of Morgan's career in the early 1900s, he and his partners made financial investments in many large companies and had a major impact on the nation's senior finance and congressmen. Morgan's total wealth at the time was about $41.5 billion. By today's standards, that's about $2.6 trillion. That's the influence of JPMorgan Chase, so everyone fears him; everyone except Nikola Tesla.

JPMorgan wants Tesla to sell him all of his patents and businesses so he can further expand earnings. Tesla realized that integrating patents into the hands of such a wealthy tycoon meant that its benefits would never benefit ordinary people, so Nikola Tesla refused. Morgan is not a man to let insults pass. Tesla has now snubbed Morgan three times because of his refusal to sell his patents.

Tesla was accustomed to working late in his laboratory. Once immersed in work, he forgets time and doesn't even eat. One evening, while he was also busy working in the lab, he was suddenly urged to leave the lab for dinner. While they were eating, there was a knock on the door. A messenger brought news that the building where Tesla's lab was located had exploded and everything had been destroyed. Tesla crossed the street and ran to where all his dreams, visions, work, patents and memories were, but in vain. The fire brigade was putting out the flames and nothing was left. The greatest monument to human technological progress was soon erased. All his technical achievements were lost. All that remained was Nikola Tesla himself.

Did Tesla's refusal to grant Morgan his patent cause the fire? Is this the consequence of Edison losing the electric war to Tesla? Did Tesla's other rivals do it? Or is it just another accident? In the end, no hard evidence exists, and time keeps secrets.

By now, most of us have heard of Mr. SpaceX's own Tesla Motors company, Elon Musk. Naturally one would think he had to be a big fan of Nikola Tesla to name his car company after him, but you might be surprised to hear who the inventor Elon Musk really admired was. Elon Musk admitted naming his car company after Nikola Tesla because Tesla cars run on AC induction motors.

Amazingly, Musk said in an interview that he preferred Thomas Edison to Nikola Tesla. "Overall, I like Edison better than Tesla because Edison brought his stuff to market and made those inventions work for the world, and Tesla didn't really do that. Musk gave a very interesting answer.

One thing we do know is that Nikola Tesla was one of the smartest inventors of all time. With more than 700 patents on his own inventions, it can be said that 80% of the technology used in the world today is attributed to Nikola Tesla. All of us are better off in some way thanks to this man.

Tesla was a loner who conducted his own research independently of mainstream science. He came into the normal world as a completely eccentric man. Tesla saw the division of society from poor to rich. He was determined to provide electricity as a gift to all people on earth.

This article comes from Weixin Official Accounts: RF School (ID: RF_Center), author: RF Little Carpenter

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