3.7. Comparison: JFET vs BJT

Try these first

1. 1.

   What type of charge carriers do JFETs use?

   Hint

   Think of the definition of a unipolar device.

2. 2.

   Is a BJT a unipolar or bipolar device?

   Hint

   Recall the meaning of 'bipolar'.

3. 3.

   What type of device is a JFET?

   • Unipolar
   • Bipolar
   • Neither

   Hint

   Recall the definition of unipolar.

4. 4.

   Which transistors are voltage-controlled?

   • JFET
   • BJT
   • Both

   Hint

   Think about the control mechanisms we discussed.

5. 5.

   Design a circuit diagram for a low-noise amplifier using a JFET and explain your design choices.

   Hint

   Think about how the input impedance of JFETs can help in your design.

6. 6.

   Evaluate a scenario where thermal stability plays a pivotal role in circuit performance. What factors should be considered?

   Hint

   Focus on applications requiring reliability in changing conditions.