What is Gramme machine?
[[Image:GrammeMachine.jpg|thumb|upright|A Gramme machine or Gramme magneto.]] A '''Gramme machine''', '''Gramme ring''', '''Gramme magneto''', or '''Gramme dynamo''' is an [[electrical generator]] that makes [[direct current]]. It is named for its Belgian inventor, [[Zénobe Gramme]]. It was the first generator to make enough power for industry. Gramme showed this machine to the [[Academy of Sciences]] in [[Paris]] in 1871. {{tech-stub}} {{DEFAULTSORT:Gramme Machine}} [[Category:Electricity]]