29.2.1. Small Signal Equivalent Circuit

Try these first

1. 1.

   What does the voltage gain represent in a common emitter amplifier?

   Hint

   Think about how signals are amplified.

2. 2.

   Define input resistance in the context of an amplifier.

   Hint

   It has to do with how much the signal can influence the amplifier.

3. 3.

   What does the negative sign in voltage gain indicate?

   • Non-inversion
   • Inversion
   • No effect

   Hint

   Think about how signals behave in amplifiers.

4. 4.

   True or False: Input resistance in a CE amplifier is primarily impacted by the emitter resistance.

   • True
   • False

   Hint

   Reflect on what influences input resistance.

5. 5.

   A CE amplifier has a transconductance g_m of 2 mA/V and a load resistance R_C of 4 kΩ. Calculate its voltage gain. What considerations would affect this in a real scenario?

   Hint

   Consider real-world factors such as transistor characteristics.

6. 6.

   Design a CE amplifier circuit given specific parameters: target gain of -10, R_C of 10 kΩ. Determine the required transconductance g_m value. Discuss potential trade-offs in this design.

   Hint

   Think about how resistances impact overall performance.