How do you think generators are made?

1832, the Frenchman Bi Ke West invented the handheld DC generator. Its principle is to change the magnetic flux by rotating the permanent magnet, generate induced electromotive force in the coil and output this electromotive force in the form of DC voltage.

1866, Siemens of Germany invented the self-excited DC generator.

1869, Belgium made a ring armature and invented a ring armature generator. This kind of generator uses water power to turn the rotor of the generator. After repeated improvement, 3. 2KW output power.

1882, Gordon of the United States made a two-phase giant generator with an output of 447KW, a height of 3 meters and a weight of 22 tons. Tesla of the United States was determined to develop AC motors when he was in Edison Company, but Edison insisted on DC mode only, so he sold the patent rights of two-phase AC generators and motors to Westinghouse Company.

1896, Tesla's two-phase alternator began to operate in Nyala Power Plant, and 3750KW and 5000V alternating current was sent to Buffalo, 40 kilometers away.

1889, Westinghouse built a power plant in Oregon, 1892, and it successfully sent the voltage of 15000 volts to Pittsfield.