Practice Working Principle Of Jfet (3.3) - Junction Field Effect Transistors (JFETs)
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Working Principle of JFET

Practice - Working Principle of JFET

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What happens when the gate voltage becomes more negative in an n-channel JFET?

💡 Hint: Think about what a wider depletion means for current flow.

Question 2 Easy

Define pinch-off voltage.

💡 Hint: What signifies that the channel is no longer effective?

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the main function of the gate-source junction in a JFET?

Controls drain current
Acts as a switch
Amplifies signals

💡 Hint: Think about the role of voltage in this function.

Question 2

After reaching pinch-off, the drain current:

True
False

💡 Hint: Recall what happens at the saturation point.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

If a JFET has IDSS of 20 mA, and VGS(off) of -6V, calculate the drain current when VGS is -3V.

💡 Hint: Substitute carefully into the equation to find ID.

Challenge 2 Hard

Explain the thermal stability advantages of JFETs over BJTs.

💡 Hint: Consider how each type of transistor uses current versus voltage.

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Reference links

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