10.6.1. Overview of p-MOSFET

Try these first

1. 1.

   What is the main function of the gate in a p-MOSFET?

   Hint

   Think about how you can control traffic at an intersection.

2. 2.

   What type of charge carriers do p-MOSFETs use?

   Hint

   Consider what happens in a p-type material.

3. 3.

   What type of charge carriers flow through a p-MOSFET?

   • Electrons
   • Holes
   • Neutrons

   Hint

   Think about the type of semiconductor used.

4. 4.

   The gate voltage in a p-MOSFET must be?

   • Positive
   • Negative

   Hint

   Consider what type of charge flow occurs.

5. 5.

   Given a p-MOSFET with a threshold voltage of -2V and a load resistance of 1kΩ, determine the drain current when the gate voltage is -4V and the source voltage is 0V.

   Hint

   Remember that you need the effective voltage across the load to find current.

6. 6.

   Design a CMOS inverter circuit using a p-MOS and n-MOS transistor. Describe how the circuit operates with input variations.

   Hint

   Consider how complementary behavior in inputs leads to output states.