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2 cards from this section. Quick, good the night before a test.
What is the purpose of a current mirror in an amplifier?
Think about how currents are managed in amplifiers.
What additional component is used in a Beta-helper circuit?
How does introducing another transistor help?
What does the Beta-helper circuit aim to improve in current mirrors?
Think about what preservation of current means.
True or False: The Beta-helper circuit decreases the output resistance of a current mirror.
Consider the role of transistors in maintaining resistance.
Consider a circuit with a current mirror. If the reference current is 10mA and the β of the additional transistor (Beta-helper) is 50, what will the new effective output current be?
Apply the output current formula effectively.
Design a scenario where the Beta-helper circuit can be critical in maintaining performance. Describe how it would be implemented.
Think about environments where signal integrity is crucial.
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