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

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

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Analog Electronics
Voltage Series (feedback also called series-shunt feedback) results in

Decreases in both input & output impedances
Increase in input impedance & decreases in output impedance
Increase in both input & output impedances
Decrease in input impedance & increase in output impedance

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