5.11 Problems

Chapter 5.11 Problems

Physics Lecture Notes – Phys 395 Electronics Book
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Physics Lecture Notes – Phys 395 Electronics Book

  • CHAPTER 5. TRANSISTOR CIRCUITS1045.11Problems1. Consider the common-emitter amplifier shown below with values VCC =12 V, R1 =47 kΩ, R2 =12 kΩ, RC =2.7kΩ, RE = 1 kΩ, and a forward-bias voltage dropacross the base-emitter junction of 0.7 V. Calculate approximate values for VB, VE,IC, VC, and the voltage gain. Using the measured h parameters hie = 3600 Ω andhfe = 150, calculate the input impedance, base current, and voltage gain. Compareyour calculated voltage gain with your approximation.ICEVVCCBVCVCRER2R1R