Download ETEE3211 Fall 2006 Test #3

ETEE3211
Fall 2006
Test #3
Name:__________________
Show all work. Clearly indicate final answer(s).
Cheatsheet must be turned in with test or a zero will be given for the entire test!
1. (35 points) Analyze the circuit shown to the right and
determine the following:
a. ICQ and VCEQ
b. Maximum undistorted output voltage swing
c. Power supplied from power supply
d. Voltage gain
e. Load lines (sketch)
2. (35 pts) Determine
overall Av, Ai and Ap
for the two-stage
amplifier shown to the
right, given
VBE1=VBE2=VBE=0.7V
and β1=β2=β=100.
3. (30 pts) Analyze the circuit shown to the right and
determine the following when R1=R2=10kΩ,
RE=600Ω, RL=300Ω, VCC=VEE=10V, β=300 and
VBE=0.6V.
a. ICQ and VCEQ
b. Maximum undistorted symmetrical output
voltage swing
c. dc power needed
d. Maximum power output (ac undistorted)
Extra Credit (30 points maximum): Determine the variation of IC for a CE amplifier which is
designed using the following criteria: AV = -10V/V, RL = 4kΩ, Rin=5kΩ, VCC = 10V and VBE =
0.7V and ICBO = 0.001µA at 25oC. The temperature varies between +25oC and +85oC and β
varies between 100 and 300. Assume all capacitors infinite and ideal.
P1:
P2:
P3:
Extra Credit: