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  • Users: Mech133
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  1. Mech133

    Flux leakage

    I have built an electromagnet in a shape that can be described as a gapped toroid. The core is 1008 LCS of .070" diameter. The diameter of the ring is 1.5" The gap is .200" The coil was wound by hand so I am unsure of the number of turns however it is 36 gage at 10 ohms, one layer. I believe...
  2. Mech133

    Magnetic core uniformity

    I am building a C-core similar to the one shown below. there are coils on both down "legs" of the core, and run in complementing polarity. Size constraints prevent me from using uniform cross-sectional area for the vertical and horizontal sections of the core. The horizontal x-section is only...
  3. Mech133

    High Emissivity Coatings

    Anyone know of High Emissivity coatings on metal substrates that also offer good abrasion resistance and low friction?
  4. Mech133

    Electromagnet: lamination vs. solid core

    Right now I am using a coil that is wound onto a bobbin that is .300x.300" footprint and .200" window height. the core area is about .100x.100. The coil is wound to 30ohms and has about 600 turns. I am pulsing 500-800ma upon activation. Currently I am using silicon steel laminations as a core...
  5. Mech133

    Low Friction Coating

    I have an application that calls for an aluminum ring oscillating on axis in a circular alumnimum track by about 15 degrees. the forces are low but the ring will oscillate at up to 30Hz, the parts are about 2" in diameter, .050" thick. Right now I am using regular anodizing for a coating. Is...
  6. Mech133

    Electromagnet Optimization

    Hello, I am looking to design an electromagnet with the greatest flux possible. I am working with very limited power as well as overall volume the coil can occupy. I am using this coil to repel a permanent magnet when pulsed. I am currently using a Si-Fe laminated core of about .250" in...

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