46.3. Input Resistance Discussion

Try these first

1. 1.

   Define input resistance in the context of a common collector amplifier.

   Hint

   Think about what 'input' means in this context.

2. 2.

   What does voltage gain represent?

   Hint

   Consider how amplifiers change input signals.

3. 3.

   What is the relationship between input resistance and collector resistance in a common collector amplifier?

   • Higher collector resistance reduces input resistance
   • Higher collector resistance increases input resistance
   • Collector resistance has no effect on input resistance

   Hint

   Think about how changing components affects the flow through circuits.

4. 4.

   True or False: Voltage gain in a common collector amplifier is typically greater than 1.

   • True
   • False

   Hint

   Recall the relationship between input and output voltages.

5. 5.

   Design a common collector amplifier circuit to achieve a specific input resistance of 10kΩ while maintaining a voltage gain close to 1. Consider the effects of both collector and emitter resistances.

   Hint

   Start with existing formulas for calculating input resistance.

6. 6.

   Evaluate the trade-off between input resistance and output impedance in a common collector amplifier designed for high-frequency applications.

   Hint

   Think about frequency behavior in RC circuits.