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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the purpose of a current mirror?
💡 Hint: Consider the applications in analog circuits.
Question 2
Easy
What does the Wilson current mirror improve over the simple current mirror?
💡 Hint: Think of the number of transistors used.
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 does a current mirror do?
- Copies current through a resistor
- Replicates current from one transistor to another
- Generates voltage
💡 Hint: What operation is typical of transistors in current mirrors?
Question 2
True or False: The Widlar current mirror is used for generating high output currents.
- True
- False
💡 Hint: Reflect on the intended applications of the Widlar design.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a Wilson current mirror circuit and calculate its output resistance if the transistors have an hFE of 100. Explain the significance of your results.
💡 Hint: Consider the relations between gain, collector resistance, and output.
Question 2
Analyze the limitations of a simple current mirror compared to the Wilson and Widlar current mirrors. Include a discussion on the implications of the Early effect.
💡 Hint: Discuss how additional transistors impact current stability.
Challenge and get performance evaluation