27.1. Analog Electronic Circuits

Try these first

1. 1.

   What does voltage gain represent in an amplifier?

   Hint

   Think about how an amplifier changes the input signal.

2. 2.

   List the components that affect the voltage gain in a common emitter amplifier.

   Hint

   Recall the factors we discussed in class.

3. 3.

   What is the formula for calculating voltage gain in a common emitter amplifier?

   • A_v = g_m * R_C
   • A_v = -g_m * R_C / (1 + g_m * R_E)
   • A_v = g_m + R_E

   Hint

   Look for a formula including both R_E and R_C.

4. 4.

   True or False: Increasing the emitter resistance will increase the voltage gain.

   • True
   • False

   Hint

   Recall the effect of R_E on gain from our discussion.

5. 5.

   Design a common emitter amplifier with a desired voltage gain of -10. Given the transconductance g_m is 0.01 S, determine the required values of R_C and R_E.

   Hint

   Start with assumed R_E values and calculate R_C accordingly.

6. 6.

   Evaluate how the choice of R_E affects both gain and stability in the amplifier circuit under varying temperature conditions.

   Hint

   Consider how gain and biasing interact and affect overall performance.