Practice - Variants of Current Mirrors: Wilson, Widlar, etc.
Practice Questions
Test your understanding with targeted questions
What is the primary function of a current mirror?
💡 Hint: Think of 'mirroring' a current signal.
What is one advantage of the Wilson current mirror?
💡 Hint: Consider how feedback might play a role.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the purpose of a Wilson current mirror?
💡 Hint: Think about the advantages of having a higher output resistance.
True or False: The Widlar current mirror can generate smaller output currents than the reference current.
💡 Hint: Consider what modifications are made to achieve lower outputs.
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Challenge Problems
Push your limits with advanced challenges
Design a current mirror circuit using the Wilson topology. Given V_CC=10V, calculate the minimum collector-emitter voltage required to keep Q2 in the active region.
💡 Hint: Consider both V_BE and the saturation voltage.
If a Widlar current mirror is set with I_ref=100uA and R_E=1k ohm, calculate the expected output current.
💡 Hint: Focus on how V_T relates to circuit functioning in current mirrors.
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Reference links
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