Inductor basic questions

Discussion in 'The Projects Forum' started by embpic, Apr 22, 2014.

  1. embpic

    Thread Starter Member

    May 29, 2013
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    i have some questions regarding inductor as it need in design. till now i don't have used inductor bcoz of his behaviour.
    as written inductor allows steady current flowing through it that is DC?
    how much current it can pass example 680uH?
    and inductor oppose to flow AC?
     
  2. wayneh

    Expert

    Sep 9, 2010
    12,153
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    An inductor opposes a change in current flow, by storing and releasing energy from a magnetic field created by the inductor. So it can be said to oppose AC but not DC.

    The ability to pass DC depends on the DC resistance, which does not have to be directly related to the inductance. So the DC current max cannot be predicted from the µH rating alone.
     
  3. alfacliff

    Well-Known Member

    Dec 13, 2013
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    the dc current is determined by the size of the wire.
     
  4. wayneh

    Expert

    Sep 9, 2010
    12,153
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    And the ∆V, the length, the composition, and the temperature.
     
  5. w2aew

    Member

    Jan 3, 2012
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  6. embpic

    Thread Starter Member

    May 29, 2013
    187
    3
    Two conditions
    if current is more than inductor rating? in DC condition.
     
  7. Little Ghostman

    Member

    Jan 1, 2014
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    lol The old timers read txt speak better than I do!:rolleyes: I had to read it 4 times:p
     
  8. embpic

    Thread Starter Member

    May 29, 2013
    187
    3
    where is use of RLC circuits.
    means appliaction??
     
  9. wayneh

    Expert

    Sep 9, 2010
    12,153
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    All real components have R, L and C values. Are you asking where inductors are used? Oscillators, such as in radio transmitters, is one of many common places to find an inductor.
     
  10. crutschow

    Expert

    Mar 14, 2008
    13,052
    3,244
    Common uses for inductors are energy storage (in switching power supplies), power supply filtering, signal filtering, oscillators...
     
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