© Siemens
In 1866, Werner von Siemens discovered the dynamo-electric principle and thus laid the foundations for the use of high-voltage technology. With the help of the dynamo machine, mechanical energy can be economically converted into electrical energy. By the end of the 1870s, the machine had been improved to such an extent that nothing stood in the way of public and private electrification. This invention laid the foundation for today's electrical engineering.
