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4 cards from this section. Quick, good the night before a test.
What is the definition of threshold voltage?
Remember, it's like the gate's password.
What region does a MOSFET operate in when V_DS is less than (V_GS - V_th)?
Think of it as behaving like a variable resistor.
What is the cutoff region?
Think about when the switch is off.
In which region does the MOSFET act like a constant current source?
Where does the current stop changing much with increasing voltage?
Consider a scenario where a MOSFET is operating at its threshold voltage with K = 1.2 mA/V² and applying a V_GS just equal to V_th. Determine the drain current I_DS and explain what happens if V_DS is subsequently increased.
Think about operating just at the boundary conditions.
A p-MOSFET has V_th = -2V, and you apply V_GS = -4V. If V_SD is increased beyond the saturation point, determine what happens to the drain current.
Focus on maintaining the larger negative voltages and their effects.
7 more questions in this section. Enroll free to practise them all.
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