47.2.1. Focus on numerical examples and design guidelines

Try these first

1. 1.

   What is the purpose of biasing a transistor?

   Hint

   Think about transistor operation.

2. 2.

   What should be the ideal voltage gain for a common collector amplifier?

   Hint

   Recall what voltage gain represents.

3. 3.

   What is the primary function of a common collector amplifier?

   • To increase voltage
   • To increase current
   • To provide isolation

   Hint

   Consider the amplifier's role regarding current.

4. 4.

   True or False: The ideal voltage gain for a common collector amplifier is 0.

   • True
   • False

   Hint

   Recall the performance expectations of the amplifier.

5. 5.

   You have a common collector amplifier with an input signal of 50mV. If the voltage gain is calculated to be 0.9, what is the output voltage?

   Hint

   Remember the formula for voltage gain!

6. 6.

   In a circuit with a source resistance of 100 kΩ and a load of 10 pF, calculate the lower cut-off frequency if the output impedance is also 52Ω.

   Hint

   Utilize the cutoff frequency formula.