Massachusetts institute of Technology Department of Nuclear Science and Engineering Department of Electrical Engineering and Computer Science 22.071/6.071 - Introduction to Electronics, Signals and Measurement Spring 2006 Homework 9 Due 4/26/06 Problem 1. R2RERCviC1VCCvoVBR1C2 Determine the value of β for the transistor such that the small signal voltage gain (oviEvRAvR=≅−C) is within 10% of the actual value. Use 124, 1,50 , 10 ,CRkRkRkR kΕ=Ω =Ω=Ω=Ω Problem 2 R2R E1 R CviC1+V CC VoVBR1C2 RLR E2 C3-V EE Draw the small signal equivalent AC circuit. Calculate the small signal gain of this circuit. 6.071/22.071 Spring 2006, HW9Problem 3. 10kΩ R2RCviC1VCCvoVBVEC2I=0.3mA The transistor in this circuit has β=100. and Vcc=5 Volts. • Determine the DC voltages VB and VE • Find RC so than VCEQ=3 Volts. • Calculate the small signal vgain. (assume that C1 and C2 alarge) oltage re 6.071/22.071 Spring 2006,
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