Analog Electronics
The universal bias stabilization circuit is the most popular because

  voltage divider is heavily loaded by transistor base .
  its β sensitivity is low .
  IC does not depend on transistor characteristic.
  IC equals to IE.

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Analog Electronics
For an NPN transistor in normal bias

  only holes cross the collector junction.
  Je is forward biased and Jc is reverse biased.
  only majority carriers cross the collector junction.
  the emitter junction has high resistance.

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