Practice - Changes in Input and Output Resistance
Practice Questions
Test your understanding with targeted questions
What does g_m represent in a transistor?
💡 Hint: Think about the relationship between input voltage and output current.
How does increasing R_E affect voltage gain?
💡 Hint: Recall the formula for gain A.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What happens to the voltage gain as R_E increases?
💡 Hint: Think of the gain formula.
True or False: A larger emitter resistor improves voltage gain.
💡 Hint: Recall how emitter resistance plays into the gain calculation.
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Challenge Problems
Push your limits with advanced challenges
You have a transistor with a transconductance of 15 mA/V, collector resistance of 1 kΩ, and you want to keep the emitter resistor as high as possible while maintaining a gain of -10. What is the maximum allowed value of R_E?
💡 Hint: Focus on rearranging the gain equation to isolate R_E.
For the circuit with β = 200 and an input resistance of 2 kΩ, find R_E if r_pi = 100Ω. What implications does this have for overall circuit stability?
💡 Hint: Calculate R_E's impact on stability.
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Reference links
Supplementary resources to enhance your learning experience.