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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define a current mirror in your own words.
π‘ Hint: Think about how currents are maintained in transistor circuits.
Question 2
Easy
What does beta (Ξ²) represent in a transistor?
π‘ Hint: Consider it as a measure of how much current is amplified.
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 function of a current mirror?
- To amplify voltage
- To copy a current
- To measure resistance
π‘ Hint: Remember its role in controlling other transistor currents.
Question 2
True or False: The output voltage of an amplifier using a current mirror can greatly vary with small mismatches in transistor characteristics.
- True
- False
π‘ Hint: Consider how precision in matching affects overall performance.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a current mirror circuit to support an output current of 10 mA with desired stability. Calculate the necessary components assuming all transistors have a beta of 150.
π‘ Hint: Evaluate how input and output conditions correlate with component values.
Question 2
Given a common emitter circuit with varying parameters, calculate the expected DC output voltage if the collector current is found to be 3.5 mA with Early voltage at 50 V.
π‘ Hint: Factor in changes based on current flowing and voltage presentation in feedback situations.
Challenge and get performance evaluation