60.1.2. Biasing Arrangements

Try these first

1. 1.

   What is the purpose of biasing in a transistor amplifier?

   Hint

   Think about where the signal should operate on the graph.

2. 2.

   Define a Common Collector (CC) configuration.

   Hint

   What connects the input and output here?

3. 3.

   What is the main advantage of using a Common Collector stage?

   • Increases input resistance
   • Reduces output impedance
   • Lowers biasing complexity

   Hint

   Think about the role of the CC stage.

4. 4.

   True or False: A Darlington pair can lead to decreased input capacitance.

   • True
   • False

   Hint

   Recall how the input capacitance is affected.

5. 5.

   Design a CC-CE amplifier for a desired input resistance of at least 1 MΩ. Specify all required components and their values.

   Hint

   Use Ohm's Law and remember the interaction between CE and CC for appropriate biasing.

6. 6.

   Considering a Darlington configuration, explain how to mitigate the increased input capacitance in a high-frequency application.

   Hint

   Look into frequency response principles for improvements.