66.2.5. Common Emitter and Common Source Amplifier

Try these first

1. 1.

   What is the primary purpose of an amplifier in circuits?

   Hint

   Think about what we discussed regarding small signals.

2. 2.

   Define active load in terms of transistor amplifiers.

   Hint

   Consider how passive loads limit amplifier performance.

3. 3.

   What type of amplifier is typically characterized by high voltage gain?

   • Common Source
   • Common Emitter
   • Both

   Hint

   Recall the advantages we discussed for each type of amplifier.

4. 4.

   True or False: The voltage gain of an amplifier is determined solely by the load resistor.

   • True
   • False

   Hint

   Think about the factors we discussed that influence gain beyond just the load resistor.

5. 5.

   Design a CE amplifier circuit diagram using active loads to achieve a gain greater than 200. Explain your design choices.

   Hint

   Think about which transistors might yield the best performance without exceeding power limits.

6. 6.

   Evaluate the performance differences in a basic Common Source amplifier circuit that operates within its class A envelope versus one that uses class B operation.

   Hint

   Compare the output characteristics discussed in class.