In 1831 the British physicist, chemist Michael • Faraday (Michael Faraday 1791 ~ 1867) in the experiment found that when the magnet moves in the coil, the coil will produce current, which is today known to us the phenomenon of electromagnetic induction. He also found that the role can be rotated by electromagnetic force, according to the results of their research, Faraday trial out of the world's first generator for human use electricity to make a significant contribution. As Faraday outstanding results in electrical research, after the man in his honor, the capacity of the capacitor unit named "Farah", with the letter "F" that.

1866 the German electrical scientist, industrialist Ernst Werner de • • • von Siemens (Ernst Werner Von Siemens 1816 ~ 1892) developed from the incentive-type generator, 1870 Belgium Z • T • Cram (1826 - 1901) has developed a self-excitation DC generator, after a continuous improvement, the motor technology has matured, the real utility generators in 1877 entered the commercial production stage.