Faraday invented an "inductance ring" called "Faraday induction coil" on August 29, 1831, which is actually the prototype of the first transformer in the world. But Faraday only used it to demonstrate the principle of electromagnetic induction, and did not consider that it could have practical uses. Faraday induction coil
Faraday induction coil
In 1881, Lucien gaulard and John Dixon Gibbs demonstrated a device called "secondary hand generator" in London, and then sold this technology to Westinghouse. This may be the first practical power transformer, but it is not the earliest transformer.
In 1884, Lucien goral and John Dixon Gibbs demonstrated their equipment in Turin, Italy, which used electric lighting. In the early days, linear cores were used in transformers, which were later replaced by more effective ring cores.
William Stanley, an engineer at Westinghouse, made the first practical transformer in 1885 after buying transformer patents from George Westinghouse, ruthen goral and John Dixon Gibbs. Later, the iron core of the transformer was made of e-type iron sheets, which was put into commercial use in 1886.
The principle of transformer transformation was first discovered by Faraday, but it was not applied in practice until the 1980s. In the competition that the power plant should output DC and AC, the ability of AC to use transformer is one of its advantages. The transformer can convert the electric energy into the form of high voltage and low current, and then convert it back. Therefore, the loss of electric energy in the transmission process is greatly reduced, and the economic transmission distance of electric energy is further. In this way, power plants can be built away from electricity. Most of the world's electricity finally reaches users after a series of voltage transformation.
