Magnetic core?

Discussion in 'General Electronics Chat' started by ENG99, Jan 28, 2016.

  1. ENG99

    Thread Starter Member

    Feb 13, 2014
    37
    0
    Hey guys, I'm wondering about the mean function of magnetic core? What does it do at any device? Sorry, if my question is stupid!

    [​IMG]

    Thx
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,148
    1,791
    The key difference between an air coil and a coil around a magnetic core has to do with the permeability of the material. An explanation of this is contained in the following wiki:

    https://en.wikipedia.org/wiki/Permeability_(electromagnetism)

    Some people recoil at the mathematics required to understand basic physics. If you are in this category, maybe we can provide a more hueristic explanation.
     
  3. Jony130

    AAC Fanatic!

    Feb 17, 2009
    3,957
    1,097
    Provide a low "resistance" path for magnetic "current" (flux Φ).
     
  4. crutschow

    Expert

    Mar 14, 2008
    13,028
    3,237
    The magnetic flux impedance is much lower in the magnetic material than air, so it greatly increases the efficiency of magnetic inductors and transformers.
     
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