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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: RE: REVIEW: Michigan Maple Michigan Maple Platform Accessory posted by Tweekeng on June 12, 2008 at 08:21:30:
Your statement is only true for constant magnetic fields. A changing magnetic field (such as produced by an AC electrical signal) CAN be attenuated by an electrical conductor. The changing magnetic field induces eddy currents in the conductor, which create their own magnetic field which oppose that of the external field.
In order to have much effect the conductor must have low resistance, this means you need thick pieces of aluminum or copper. For example a 1/4" to 1/2" thick aluminum plate will give significant attenuation of 60Hz magnetic fields. And that is without hysteresis or saturation effects.
John S.
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Follow Ups
- magnetic field attenuation by electrical conductors - John Swenson 13:47:35 06/12/08 (1)
- RE: magnetic field attenuation by electrical conductors - rick_m 07:55:47 06/13/08 (0)
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