Faraday invented an "inductor loop" on August 29, 1831, called the "Faraday Induction Coil", which was actually the world's first prototype of a transformer.
But Faraday only used it to demonstrate the principle of electromagnetic induction, and did not consider that it could have practical uses.
In 1881, Lucien Gaulard and John Dixon Gibbs demonstrated a device called a "secondary hand dynamo" in London. equipment, and then sold the technology to the American Westinghouse Company. This may be the first practical power transformer, but it is not the earliest transformer.
In 1884, Lucien Gollard and John Dixon Gibbs demonstrated their device in Turin, Italy, which used electric lighting.
Early transformers used linear cores, which were later replaced by more efficient toroidal cores.
After Westinghouse engineer William Stanley bought the transformer patent from George Westinghouse, Lucien Golar and John Dixon Gibbs, in 1885 Made the first practical transformer.
Later, the core of the transformer was made of E-shaped iron sheets, and commercial use began in 1886.
The principle of transformer was first discovered by Faraday, but it was not put into practical application until the 1880s.
In the competition between what power plants should output, direct current and alternating current, the ability to use transformers for alternating current is one of its advantages.
Transformers can convert electrical energy into a high voltage and low current form and then convert it back, thus greatly reducing the loss of electrical energy during transmission and allowing the economical transmission distance of electrical energy to reach further.
This way, power plants can be built far away from where the electricity is used.
Most of the world's electricity goes through a series of transformers before it finally reaches the user.