48.1.3. Input Resistance Calculation

Try these first

1. 1.

   What is input resistance in the context of transistor amplifiers?

   Hint

   Think about how input and output signals interact.

2. 2.

   What is the primary purpose of biasing in amplifiers?

   Hint

   Remember the term used for DC voltage adjustment.

3. 3.

   What does input resistance in an amplifier affect?

   • Signal strength
   • Power consumption
   • Efficiency
   • None of the above

   Hint

   Consider how input resistance impacts the input source.

4. 4.

   True or False: High output resistance is desirable in transistor amplifiers.

   • True
   • False

   Hint

   Think about how output resistance affects load connections.

5. 5.

   Design an amplifier with an input resistance of over 1MΩ using values for R_B and R_E of your choice. Explain your choice.

   Hint

   Calculate R_in using parallel resistance formulas.

6. 6.

   If the beta value of a transistor increases from 100 to 150, how will that affect the input resistance? Discuss the implications.

   Hint

   Reflect on the relationship between beta and input resistance.