transistor

Discussion in 'General Electronics Chat' started by bhuvanesh, Aug 10, 2013.

  1. bhuvanesh

    Thread Starter Member

    Aug 10, 2013
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    2
    In NPN transistor main current flows from emmitter to collector but the threory say that Ie=Ic+Ib. So what i am thinking is i may be in Ic=Ie+Ib.pplzz help me.
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,565
    2,379
    The emitter I = Ib+Ic.
    Max.
     
  3. Ramussons

    Active Member

    May 3, 2013
    557
    92

    In NPN transistor main current flows from collector to emitter and, therefore, Ie - Ic + Ib is correct.

    The CB junction is Reverse Biased, the arrow in the Emitter of a NPN (or PNP) transistor shows the direction of the main Current Flow.

    Ramesh
     
  4. bhuvanesh

    Thread Starter Member

    Aug 10, 2013
    268
    2
    As you said in npn main current flow from collector to emitter so emitter = collector plus base current.if it is pnp the main current flow from emitter to collector so do u say collector = emitter plus base current
     
  5. Jony130

    AAC Fanatic!

    Feb 17, 2009
    3,962
    1,097
    This imagine explains everything.

    [​IMG]

    And as you can see in pnp transistor the main current flow from emitter to collector. But emitter also provides the base current.
     
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