58.1.3. Numerical Examples Discussion

Try these first

1. 1.

   What is the voltage gain for a common emitter amplifier with g_m = 5 mS and R_C = 2kΩ?

   Hint

   Use the formula A_V = g_m * R_C.

2. 2.

   Define bandwidth in the context of amplifiers.

   Hint

   Think about the frequencies associated with signal amplification.

3. 3.

   What is the primary function of a common emitter amplifier?

   • To provide voltage buffering
   • To achieve high gain
   • To increase output resistance

   Hint

   Consider the main use of various amplifier configurations.

4. 4.

   True or False: Adding a common collector stage decreases the input resistance of the amplifier.

   • True
   • False

   Hint

   Think about how CC stages function in amplifiers.

5. 5.

   Design an amplifier circuit with both CE and CC stages for a specific gain of 150 and bandwidth of 3 MHz. What component values would you choose?

   Hint

   Focus on achieving the voltage and current requirements.

6. 6.

   Analyze the effects of loading between a CE stage and a load following a CC stage. What performance metrics would be impacted?

   Hint

   Consider the interaction of voltages and resistances between stages.