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Re: Egg of Columbus
Original poster: gbward4@xxxxxxx
Hey guys. There's a good picture of the EoC here:
<http://www.tfcbooks.com/articles/tac2.htm>http://www.tfcbooks.com/articles/tac2.htm
And this is an excerpt from here:
<http://en.wikipedia.org/wiki/Egg_of_Columbus>http://en.wikipedia.org/wiki/Egg_of_Columbus
"Tesla's device used a <http://en.wikipedia.org/wiki/Toroid>toroidal
<http://en.wikipedia.org/wiki/Iron>iron core
<http://en.wikipedia.org/wiki/Stator>stator on which four
<http://en.wikipedia.org/wiki/Coil>coils were wound. The device was
powered by a two-phase
<http://en.wikipedia.org/wiki/Alternating_current>alternating current
source (such as a variable speed
<http://en.wikipedia.org/wiki/Alternator>alternator) to create the
rotating magnetic field. A three-phase alternator would work just as
well, if not better. The device operated on 25 to 300
<http://en.wikipedia.org/wiki/Hertz>hertz current. The ideal
operating frequency was described as being between 35 to 40 hertz. A
reproduction of the device is displayed at the Nikola Tesla Museum in
Belgrade and the Technical Museum i n Zagr eb."
Here's a good video of the one in the Tesla Museum:
<http://www.youtube.com/watch?v=brNBVDCeECg>http://www.youtube.com/watch?v=brNBVDCeECg
And pic:
<http://www.mdc.hr/tehnicki/media/07-velikani/vel2.gif>http://www.mdc.hr/tehnicki/media/07-velikani/vel2.gif
Oh, here's a pupman thread too, although not all that helpful:
<http://www.pupman.com/listarchives/2003/May/msg00919.html>http://www.pupman.com/listarchives/2003/May/msg00919.html
Also, several sites report them to be terribly inefficient...
GB :o)