10.2.1. Revisiting MOSFET

Try these first

1. 1.

   What does MOSFET stand for?

   Hint

   Think about the three foundational components.

2. 2.

   What is the role of the gate in a MOSFET?

   Hint

   Recall what happens when voltage is applied.

3. 3.

   What does the gate in a MOSFET control?

   • Current flow
   • Voltage level
   • Resistance

   Hint

   Think about the function of the gate.

4. 4.

   The channel in an n-MOSFET is formed by applying a positive voltage to the gate.

   • True
   • False

   Hint

   Recall what happens when we apply voltage to the gate.

5. 5.

   Given a MOSFET with a threshold voltage of 2V, calculate the current flowing through it if the drain-source voltage is 5V and the gate-source voltage is 3V.

   Hint

   Think about how the Vgs affects the current.

6. 6.

   Design a simple circuit using a n-MOSFET to switch an LED on and off. Identify the components and explain your choices.

   Hint

   Consider the maximum ratings of the components.