338
PSVCC=10 V, rB1=60 KΩ, rB2=40 KΩ, rE=1 KΩ, rC=6 KΩ, and
Q1 is Q2N2222. (a) Find the sensitivPiCE and MaTLaB for
Electronics: an integrated approach
8.15 VCC=10V,RB1 =60K Ω,RB2 =40K Ω,RE =1K Ω,RC =6K Ω,
andQ1isQ2N2222.(a)FindthesensitivForProblem8.14,determine
the low cut-off frequency, high
cut-off frequency, and the bandwidth as the function of the
feedback
resistance
RF.
in Figure
P8.14.
RB1 = 60 KΩ, RB2 = 80 KΩ, RS = 100 Ω, RC1 = 8
8.16 KΩ,
For the
two-stage
amplifier
with
shunt-series
RE1
= 2.5 KΩ,
RB3 = 50
KΩ,
RB4 = 60 feedback
KΩ, RC2is=shown
5 KΩ,
RE2 = 1 KΩ, RF = 2 KΩ, C1 = 20µF, CE = 100 µF, and C2 = 20 µF.
If input voltage VS is a sinusoidal voltage with a peak value of
1 mV, determine the voltage gain and bandwidth as a function
of theVCC=10 V, RB1=60 KΩ, RB2=40 KΩ, RE=1 KΩ, RC=6
KΩ, and Q1 is Q2N2222. (a) Find the sensitiv supply voltage
8.17VCC
(8 V to 8.10
12 V).
Assume
that
both
tran-sistors
Q1source
and Q2
For Example
if VS
= 1 mV
and
frequency
of the
is
are
Q2N3904.
5 KHz,
find the input resistance as RF varies from 1 KΩ to 8 KΩ.
8.18In Figure P8.13, if RS = 1 KΩ, RL = 10 KΩ, RF = 20 KΩ, and
VCC = •VEE• = 15 V. Find the gain, Vo/VS if R1 varies from 1 KΩ
to 10 KΩ. Plot voltage gain with respect to R1. Assume that the
Op Amp is VCC=10 V, RB1=60 KΩ, RB2=40 KΩ, RE=1 KΩ,
RC=6 KΩ, and Q1 is Q2N2222. (a) Find the sensitivUA741 and
the input
voltage VSamplifier
is sinusoidal
wave-form
with RB
a frequency
8.19For
the Darlington
shown
Figure P8.12,
= 60 KΩ,
of 2=KHz
mV.and transistors Q1 and Q2
RS
90 Ω,and
REa=peak
1000voltage
Ω, C1 =of
101µF,
are both Q2N2222. If VCC varies from 10 V to 15 V, determine
the voltage gain as a function of VCC. Assume that input voltage VS is sinusoidal waveform with a frequency of 1 KHz and a
peak value of 5 mV.
8.20For the common-emitter biasing network, shown in Figure 8.6,
VCC = 10 V, RB1 = 60 KΩ, RB2 = 40 KΩ, RE = 1 KΩ, RC = 6 KΩ, and
Q1 is Q2N2222. (a) Find the sensitivity of the voltage at the collector to amplifier components.
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