3.10. Summary of Key Concepts

Try these first

1. 1.

   What does JFET stand for?

   Hint

   Think of how it controls current.

2. 2.

   Name the two types of JFETs.

   Hint

   Recall the types based on their semiconductors.

3. 3.

   What type of device is a JFET?

   • Bipolar
   • Unipolar
   • Diode

   Hint

   Recall the types of carriers used.

4. 4.

   True or False: JFETs are current-controlled devices.

   • True
   • False

   Hint

   Consider the difference between JFETs and BJTs.

5. 5.

   Design a circuit using a JFET as an amplifier. Explain your choice of parameters and operational region.

   Hint

   Consider how gain relates to operational regions.

6. 6.

   Given a JFET with specific VGS and ID values, calculate the expected drain current in the active region using Shockley's equation.

   Hint

   Remember to refer to the characteristics associated with each gate voltage.