57.3.2. Circuit Configuration and Analysis

Try these first

1. 1.

   What is a composite transistor?

   Hint

   Think about why we consolidate components in circuits.

2. 2.

   List one advantage of a common emitter configuration.

   Hint

   Recall the purposes of different configurations.

3. 3.

   What is the main advantage of using composite transistors?

   • It reduces the overall component count
   • It simplifies circuit analysis
   • It increases power consumption

   Hint

   Think about how we can make complex problems easier.

4. 4.

   True or False: The common collector configuration has low input impedance.

   • True
   • False

   Hint

   Recall the characteristics of various configurations.

5. 5.

   Given a composite transistor setup with transistors Q1 and Q2 having β values of 100 and 150 respectively. Calculate the overall β, and explain your method.

   Hint

   Remember the formula relating individual β to the composite structure.

6. 6.

   For a CE stage followed by a CC stage, if the CE stage has a voltage gain of 200 and the CC stage has a unity gain, what is the overall voltage gain?

   Hint

   Look for the sequence of multiplication in voltage gain ratings.