10. Alcon Levitator

In 1994 Andrew Alcon patented* a simple device which stably levitates a magnet above two counter-rotating aluminum rotors.

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The motors used in this demo are 5,000 RPM, 1/15 HP, 115 VAC Dayton model 2M066. The aluminum rotors are carefully made to spin true. A light dimmer circuit is used to control the speed of the motors.


*US Patent 5,319,336