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  1. jpysam

    Electromagnet design

    Hey hacksaw, Could you pls explain your said, I didn't get it exactly, am I thinking wrong?
  2. jpysam

    Electromagnet design

    my first thought was in this direction, but I think the mmf should remain constant. mmf=flux*reluctance (flux=B*area, reluctance=L/(mu*area)) mmf=B*area*(L/(mu*area)) so, yes I removed some A of area in the material and the total area decreased but also because of this, the reluctance of the...
  3. jpysam

    Electromagnet design

    2.case is that there is a hole in the magnetized area. What I wonder in this case is written in the first post. Could you please take a look there. Thank you
  4. jpysam

    Electromagnet design

    Hi Mike, thank your for reply. Of course, I made a design like the picture you posted, with a magnetized part in the middle and a steel wall on the outside. I think there is a mistake in your calculation or I said something wrong. Because I lifted 10-15 kg even with only 220 windings and 0.5...
  5. jpysam

    Electromagnet design

    Hi, I'm too new to magnetic things but I need to make an electromagnet to measure efficiency of my gearbox (electromagnetic brakes). I've done the calculations so far but there is a question on my mind. So, I use 1018 mild steel for core material (best available option for me) 24 awg(0.51mm)...

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