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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What are the two main transistors used in a simple BJT current mirror?
💡 Hint: Think about the configuration of the current mirror itself.
Question 2
Easy
Define IREF in the context of a current mirror.
💡 Hint: Consider the role of current 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 function of a BJT current mirror?
- To amplify voltage
- To replicate current
- To measure resistance
💡 Hint: Think about what the mirror does with current.
Question 2
The Early effect in BJTs primarily causes what?
- True
- False
💡 Hint: Recall the impacts of voltage on current flow.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a simple BJT current mirror circuit with targeted IREF of 2 mA using a measured VBE value of 0.7 V. Specify component values for RREF and calculate the expected IOUT.
💡 Hint: Remember the relationships between the components and the VBE value.
Question 2
Given that the output resistance Rout typically reduces as variations in collector-emitter voltage occur, calculate the expected change in IOUT due to a change in VCE observed during testing.
💡 Hint: Reflect on the observed V-I characteristic graph shapes.
Challenge and get performance evaluation