12.4. Indian Institute of Technology, Kharagpur

Try these first

1. 1.

   What type of material constitutes the channel of a p-channel MOSFET?

   Hint

   Think about the charge carriers that conduct electricity.

2. 2.

   What polarities are necessary for biasing a p-channel MOSFET correctly?

   Hint

   Consider how to attract holes into the channel.

3. 3.

   What kind of carriers are mainly involved in p-channel MOSFET operation?

   • Electrons
   • Holes
   • Both

   Hint

   Remember the key type of semiconductor used in the channel.

4. 4.

   True or False: The gate voltage for a p-MOSFET must be positive.

   • True
   • False

   Hint

   Think about how voltage polarity affects the creation of carriers.

5. 5.

   A p-MOSFET has a threshold voltage of -2V and is connected to a drain-source voltage of -5V. Calculate when pinch-off occurs given the biasing at the gate.

   Hint

   Focus on voltage relationships.

6. 6.

   If a p-MOSFET is biased with Vsg = -3V and the drain is connected to -6V, determine if it is in saturation.

   Hint

   Check the current flow direction and the threshold.