"Antigravity" Method 10b of 15 Electromagnetic Suspension with Feedback Group IIIA

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Filmed 1991-1996, 10 of 15 methods of levitating an object known to the author John Iwaszko, edited from the video Antigravity the reality made in 1996. The antigravity method shown in this edit, at the time was classified as Method 10 of 15, Electromagnetic Suspension-repulsion or attraction with feedback loop control, Group IIIA. It is well known that the attraction from a permanent magnet decreases with increased distance, and increases at closer distances, which is 'unstable', unless tethered or pivoted or rotated such as shown in methods 5, 6 and 9. It is also possible to create a stable system by using the opposite principle by varying the magnetic field of a permanent magnet or a dc powered electromagnet that will push a permanent magnet back to a stable position.
Stable magnetic levitation can be achieved by electronic control circuitry that can measure the position and speed of the object being levitated, and using some type of feedback system which continuously adjusts one or more electromagnets to correct the object's motion, thus forming a servomechanism, and although a direct current supplies the electromagnet the power, the electromagnet oscillates between off and on state and also switch between polarity so has been grouped with alternating AC current levitation, also called Electromagnetic suspension (EMS), and is successfully controlled by a correct position of the sensor or sensors utilised as well, as exact current control such as driving the electromagnet with a pulse width modulated signal. The repeating pulse changes its width to apply the correct power to the device over time.
There are many methods that can be used to achieve EMS, such as magnetic field coils close to a levitated magnet. The crowning glory of this opus is the magical and remarkable levitating 240V 25W BC incandescent GLS lamp, illuminated wirelessly by the high frequency field from the Electrical transmitter seen on the right, a receiving coil is looped around the lamp, receives the energy wirelessly through space and is illuminated. I could have been more environmentally friendly and illuminated four compact fluorescent lamps of 10 Watts each, but there is nothing more beautiful, the glow of an incandescent lamp. This combines my three scientific passions lighting, wireless electrical energy transmission and antigravity.

1. By: John Iwaszko
2. Categories Science & Tech
3. Views 4,755
4. Added :29-Mar-09
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