7.2. Types of BJTs

Try these first

1. 1.

   What type of charge carriers are used in NPN transistors?

   Hint

   Think about the flow direction of current.

2. 2.

   In a PNP transistor, which direction does the current flow?

   Hint

   Remember the opposite of NPN.

3. 3.

   Which type of transistor has holes as the majority carriers?

   • NPN
   • PNP
   • Both

   Hint

   Refer back to how current flows in these transistors.

4. 4.

   True or False: The collector current in an NPN transistor flows from the emitter to collector.

   • True
   • False

   Hint

   Think about the flow direction of current in NPN versus PNP.

5. 5.

   Design a simple circuit using an NPN transistor to amplify a small audio signal. Describe how it works.

   Hint

   Consider the relationships of input and output current in your explanations.

6. 6.

   Discuss the advantages of using PNP transistors in specific applications over NPN transistors.

   Hint

   Think about common electronic devices and their power management.