Download ETEE3211 Fall 2004

ETEE3211
Fall 2004
Test #2
Name:__________________
Show all work. Clearly indicate final answer(s).
1. Determine the voltage at points VC, VE, and VCE in the
circuit shown to the right when VBE=0.7V and β=100.
Hint: Do not assume IB=0.
2.
Find VCC, RB, and RE in the
circuit shown to the left using
the dc load line given. Assume
α≈1.
3.
For the circuit shown to the right:
a. Find the values of R1 and R2 needed to
achieve the maximum possible output
voltage swing.
b. Draw the ac and dc load lines.
c. Determine the maximum symmetrical
output swing.
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4.
Analyze the circuit shown to the left to determine
VBB, RB, ICQ, and VCEQ. Assume VBE= -0.7V and
β=200.
Extra Credit: (25 pts maximum)
Analyze the circuit to the right and determine the
following when β=200 and VBE=0.7V:
a. ICQ and VCEQ.
b. Undistorted symmetrical voltage output swing.
c. Power supplied from the battery.
d. ac power output.
e. Power rating of the transistor needed.