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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: Think about its role in circuit design.
Question 2
Easy
What does IREF represent in a current mirror?
💡 Hint: Consider the currents flowing in the circuit.
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 role of the reference resistor in a BJT current mirror?
- To limit current
- To set IREF
- To increase output voltage
💡 Hint: Consider what defines the 'start' of the current mirror process.
Question 2
True or False: The Early effect can lead to variations in output current in a current mirror.
- True
- False
💡 Hint: Reflect on how voltage can influence current characteristics in BJTs.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a BJT current mirror for an application requiring IREF = 5 mA. Calculate the values for RREF if VCC = 12V and assume VBE = 0.7V.
💡 Hint: Remember to use the standard VBE when calculating RREF.
Question 2
Describe how the base current error will affect IOUT when IREF is set at 3 mA with base currents of 0.02 mA. Calculate IOUT.
💡 Hint: Make sure to account for the error by factoring in the base currents.
Challenge and get performance evaluation