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what makes collector current to be beeta(current amplification factor) times base current? Answered

what makes collector current to be beeta(current amplification factor) times base current? Is it because of shape of the transistor or doping? or Why it is acting as constant current source? or Why the collector current is independent on collector resistor and Vcc(voltage across collector and emitter)?

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rickharris (author)2012-02-25

+1 good explanation as well.

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AndyGadget (author)2012-02-25