ETEE3211 Fall 2005 Test #2 Name:__________________

Show all work. Clearly indicate final answer(s). 1. (35 points)Assuming VCE(sat)=0.2V and using the

circuit shown to the right, determine VE, VC and VB when:

a. RB=100kΩ b. RB=10kΩ

2. (65 points) For the circuit shown to the right,

VCC=12V, VBE=0.7V, β=200, RC=RL=5kΩ, RE=300Ω and all capacitors infinite and ideal:

a. Find the values of R1 and R2 that yield the maximum possible symmetric peak-to-peak swing of ic.

b. Sketch the ac and dc load lines. c. Calculate the power dissipated by R1, R2, RE

and RC. d. Calculate the power dissipated by the

transistor. e. What is the power supplied by the battery?

Extra Credit (30 points max) Analyze the circuit shown to the right and determine the following when β=200, VBE=0.7V, VCC=VEE=10V, R1=R2=10kΩ, RE1=400Ω, RE2=200Ω, RL=400Ω and all capacitors are ideal and infinite:

f. ICQ and VCEQ g. Undistorted symmetrical output voltage

swing h. Power supplied from the battery i. ac power output j. Power rating needed for the transistor