27.8.1 - Changes in Input and Output Resistance
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
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.
4 more questions available
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.
2 more questions available
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.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.