16.2.1. Basic Circuit Configuration

Try these first

1. 1.

   What does MOSFET stand for?

   Hint

   Think about how the acronym describes its construction.

2. 2.

   What is V_th?

   Hint

   Remember, it allows current to flow.

3. 3.

   Which region allows a MOSFET to amplify signals?

   • Cut-off
   • Saturation
   • Triode

   Hint

   Think about which region powers the signal.

4. 4.

   True or False: The threshold voltage (V_th) is the same for all MOSFETs.

   • True
   • False

   Hint

   Consider how different MOSFETs are built.

5. 5.

   Calculate the output voltage at the drain of a MOSFET with a given drain current (I) of 5mA, a drain resistor (R) of 200 ohms, and a supply voltage (V_dd) of 10V.

   Hint

   Apply Ohm's law to find the voltage drop across the resistor.

6. 6.

   Explain how varying the gate voltage affects both I_DS and V_DS in a common-source amplifier configuration.

   Hint

   Consider how changes in input voltage lead to changes in output.