3.2. Construction of JFET

Try these first

1. 1.

   What is an n-channel JFET?

   Hint

   Think about the type of semiconductor used.

2. 2.

   What is the role of the gate in the JFET?

   Hint

   Consider what aspect of current flow the gate controls.

3. 3.

   What type of semiconductor does an n-channel JFET use?

   • p-type
   • n-type
   • bipolar

   Hint

   It's based on the type of semiconductor.

4. 4.

   True or False: The gate of a JFET can allow current to flow.

   • True
   • False

   Hint

   Think about the role of control in the device.

5. 5.

   Design a circuit using both n-channel and p-channel JFETs that demonstrates their complementary behavior in a switching application.

   Hint

   Consider how the n-channel can conduct while p-channel cuts off current, and vice versa.

6. 6.

   Calculate the expected drain current for an n-channel JFET when the gate voltage is adjusted and the substrate temperature increases.

   Hint

   Think about the relationship between voltage changes and temperature effects on conductivity.