Name:
Lab Section:
1
Lab Questions
3.1.3 Adjust the potentiometer until the output voltage reaches 650 mV. What is the value of
R
C
at this
point?
R
C
=
3.1.4 Perform loadline analysis by plotting the
I
C
vs.
V
OUT
curves for both the transistor and
R
C
. On the
plot, indicate the Fxed point solution for
V
OUT
. How should we adjust the potentiometer to increase
V
OUT
(i.e. do we increase or decrease the value of
R
C
)?
3.1.5 Will the voltage source become better or worse as the resistance of
R
C
decreases (with better deFned
as being closer to an ideal source)? Explain.
Hint: Consider the characteristics of an ideal voltage
source.
3.1.6 ±ind the output impedance of the voltage source.
R
out
=
3.1.7 Suppose you want your voltage source to output 1
.
3 V. Clearly, having 1
.
3 V as the
V
BE
of a diode
connected BJT is not a good idea (please, don’t even try setting
V
BE
to 1
.
3 V). Draw a circuit topology
that can achieve this output voltage without requiring an extremely high
V
BE
.
1
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 Spring '08
 MonaHella
 Resistor, Thévenin's theorem, Norton's theorem, Analog Circuits

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