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An early form of an alternating current electrical generator built by Pixii

Hippolyte Pixii (1808–1835) was an instrument maker from Paris, France. In 1832 he built an early form of alternating current electrical generator, based on the principle of magnetic induction discovered by Michael Faraday. Pixii's device was a spinning magnet, operated by a hand crank, where the North and South poles passed over a coil with an iron core. A current pulse was experienced each time a pole passed over the coil. He also found that the current direction changed when the North Pole passed over the coil after the South pole and this of course was alternating current. Later on acting on a suggestion by André-Marie Ampère other results were obtained by introducing a commutator, which produced a pulsating direct current which at this time was preferable to alternating current. Although Pixii at the time did not fully understand electromagnetic induction, his device led to more sophisticated devices.

External links

Interactive Java Tutorial on the Pixii Machine invented by Hippolyte Pixii National High Magnetic Field Laboratory

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 [[Image:Wechselstromerzeuger.jpg|right|thumb|An early form of an alternating current electrical generator built by Pixii]]
-'''Hippolyte Pixii''' (1808–1835) was an instrument maker from [[Paris]], [[France]]. In 1832 he built an early form of [[alternating current]] [[electricity|electrical]] generator, based on the principle of magnetic induction discovered by [[Michael Faraday]]. Pixii's device was a spinning magnet, operated by a hand crank, where the North and South poles passed over a coil with an [[iron]] core. A current pulse was experienced each time a pole passed over the coil. He also found that the current direction changed when the North Pole passed over the coil after the South pole and this of course was alternating current. Later on acting on a suggestion by [[André-Marie Ampère]] other results were obtained by introducing a [[Commutator_(electric)|commutator]], which produced a pulsating [[direct current]] which at this time was much more preferred than alternating current.  Although Pixii at the time did not fully understand electromagnetic induction, his device led to more sophisticated devices.
+'''Hippolyte Pixii''' (1808–1835) was an instrument maker from [[Paris]], [[France]]. In 1832 he built an early form of [[alternating current]] [[electricity|electrical]] generator, based on the principle of magnetic induction discovered by [[Michael Faraday]]. Pixii's device was a spinning magnet, operated by a hand crank, where the North and South poles passed over a coil with an [[iron]] core. A current pulse was experienced each time a pole passed over the coil. He also found that the current direction changed when the North Pole passed over the coil after the South pole and this of course was alternating current. Later on acting on a suggestion by [[André-Marie Ampère]] other results were obtained by introducing a [[Commutator_(electric)|commutator]], which produced a pulsating [[direct current]] which at this time was preferable to alternating current.  Although Pixii at the time did not fully understand electromagnetic induction, his device led to more sophisticated devices.
 ==External links==