33.5.3. Voltage Gain

Try these first

1. 1.

   What is the formula for voltage gain?

   Hint

   Think about how output and input relate to each other.

2. 2.

   What does the negative sign in voltage gain represent?

   Hint

   Consider how the input signal behaves relative to the output.

3. 3.

   What is the voltage gain equation for a common source amplifier?

   • A = V_out / V_in
   • A = R_D * g_m
   • A = -R_D * g_m

   Hint

   Consider how output voltage behaves with respect to input.

4. 4.

   True or False: The output resistance increases with increasing load resistance.

   • True
   • False

   Hint

   Think about how loading changes the output voltage instead.

5. 5.

   Calculate the voltage gain for a common source amplifier if R_D = 10 kΩ and g_m = 1 mA/V. What implications does the gain level present?

   Hint

   Use A = -R_D * g_m to find the gain.

6. 6.

   Discuss how increased output resistance affects amplifier behavior when connected to different loads.

   Hint

   Focus on the implications of Ohm's Law in signal transfer.