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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the purpose of self-bias in JFET circuits?
💡 Hint: Think about the relationship between feedback and stability.
Question 2
Easy
What is the significance of the pinch-off voltage in JFET operation?
💡 Hint: Consider the impact of gate voltage on drain current.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the primary advantage of JFET self-biasing?
- It increases gain
- It stabilizes the Q-point
- It reduces noise
💡 Hint: Consider why maintaining the Q-point is essential in amplifier circuits.
Question 2
True or False: VGS for N-channel JFET in self-bias must be positive.
- True
- False
💡 Hint: Think about the characteristics of pinch-off and saturation.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A JFET has IDSS = 4mA and VP = -2V. If the desired ID = 2mA, find the corresponding VGS and determine the RS needed if ID is expected to increase to 3mA.
💡 Hint: Ensure to realize how VGS changes with respect to ID based on Shockley's formula.
Question 2
Design a self-bias circuit for a JFET with VDD = 10V, aiming for ID = 2mA with IDSS = 3mA and VP = -1V. Calculate RD and RS.
💡 Hint: Focus on maintaining balance of currents across the key resistors to optimize the design.
Challenge and get performance evaluation