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Transistor help!

Discussion in 'General Electronics Discussion' started by divyansh1122, Dec 6, 2013.

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  1. divyansh1122


    Dec 6, 2013
    I'm a newbie in electronics field but i'm really interested about it. What i want to know is that how is Base Current formed in a BJT. I know that about 95% of majority carriers go from emitter to collector via base and the remaining recombines with the other charge in the base region. So, how in the world is base current formed?
    I read somewhere that the base current is formed due to recombination of holes and electrons in the base region of the transistor. So, if they combine how can they form base current? I mean, if the hole and electron combine with each other(they'd cancel each others charge and be neutral) how are they supposed to act as charge carriers?

    I know this is a stupid question but please answer asap. It is just killing me when I'm thinking about it and I'm not able to study further. Thank you!
  2. BobK


    Jan 5, 2010
    The base emitter junction is a diode. The base current flows in the same way as current flows in a diode.

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