Eddy current repulsion can provide enough force to give levitation of a coil. The coil was out of a defibrillator output circuit. Don’t know number of turns but the inductance is 10 mH (I think). It is drawing 6.5 A at 100 V AC to get the lift of about 1/2 inch off a 1/4 inch copper plate. It is tethered like a conventional lifter. The power is over 600 W so gets hot quickly.
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My first magnetic levitation project setup lifting a NIB magnet working after a week of adjusting and testing. A NIB magnet with some metal pipe is supported motionless, 1 inch below the coil. “..look Ma, no hands..”
“Continue reading” for development of a display, circuits and components. 6 photos and links.
My magnetic levitation display keeping a magnet spinning in mid-air.
After my earlier proof of concept Magnetic Levitation 1 it was time for a serious setup.
“Continue reading” for full display set-up in a science museum. 8 photos, video and links…
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This is my PIC micro-controller PICAXE 08 breadboard to get the idea of simple interfacing.
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