DC Generators basic

Direct current (DC) is the flow of an electrical charge in one direction. Examples of this type of current include batteries and solar cells. Thomas Edison, who subsequently held many patents involving direct current, first demonstrated it. At that time, all public electricity was direct, and when Westinghouse and Tesla proposed switching to alternating current (AC), Edison bitterly opposed the idea so as not to lose his patent royalties. Nowadays, AC is used in all homes, but DC still has its particular uses, primarily as generators in large industrial settings and in charging batteries.