MICROELECT. CIRCUIT ANALYSIS&DESIGN (LL)
4th Edition
ISBN: 9781266368622
Author: NEAMEN
Publisher: MCG
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Textbook Question
Chapter 2, Problem 2.6EP
Repeat Example 2.6 for
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5. Consider the ac equivalent circuit of an
amplifier, where RE = 1 KS2, gm = 0.05 S, and
Υπ= 2Κ Ω.
(a) Redraw the ac equivalent circuit using the
hybrid-pi small signal model for BJTS.
Include ro in the model.
R₁
ww
Vi
RB
ww
+
RL
Vo
RE
(b) Find the terminal resistance RIB using the circuit obtained in (a). Ignore ro. Show your
work. (Don't use formula for RiB.)
4. Consider the circuit. Use the symbol ||
to indicate the parallel of resistors in the
following questions.
(a) Express the input resistance Rin in terms of
the terminal resistance and other necessary
resistor values. (In other words, RiB, Ric, and
RIE are given.)
C₁
R₁
R₂
+Vcc
Rc
C3
R3
C2
ی
RE
-VEE
(b) Express the output resistance Rout in terms of the terminal resistance and other necessary
resistor values. (In other words, RiB, Ric and RiE are given.)
(c) Express the voltage gain A₁ = ∞ in terms of terminal voltage gain Avt, the terminal
Vi
resistance, and other necessary resistor values. (Avt, RiB, Ric and R₁E are given.)
+51
2. ẞ 100, VBE(on)= 0.7 V, and VCE(sat) = 0.2 V for the BJT. We want
to find the Q-point through the following steps. Show your work.
a) Find the bias voltage VTH Using Thevenin's equivalent circuit.
R1|| R2
www
+5 V
R₁ = 20 k
IB
VTH
Answer: VTH =
V
b) Find the base current voltage IB.
www.
Answer: IB =
μA (note the unit.)
c) Find the collector voltage Vc (with reference to the ground).
RC= 2.3 k
B
E
R₂ = 30 k
-5 V
www
R₁ =
5 ΚΩ
ww
AHI›
RE=
5 ΚΩ
Chapter 2 Solutions
MICROELECT. CIRCUIT ANALYSIS&DESIGN (LL)
Ch. 2 - Repeat Example 2.1 if the input voltage is...Ch. 2 - Consider the bridge circuit shown in Figure 2.6(a)...Ch. 2 - Assume the input signal to a rectifier circuit has...Ch. 2 - The input voltage to the halfwave rectifier in...Ch. 2 - Consider the circuit in Figure 2.4. The input...Ch. 2 - The circuit in Figure 2.5(a) is used to rectify a...Ch. 2 - The secondary transformer voltage of the rectifier...Ch. 2 - Determine the fraction (percent) of the cycle that...Ch. 2 - The Zener diode regulator circuit shown in Figure...Ch. 2 - Repeat Example 2.6 for rz=4 . Assume all other...
Ch. 2 - Consider the circuit shown in Figure 2.19. Let...Ch. 2 - Suppose the currentlimiting resistor in Example...Ch. 2 - Suppose the power supply voltage in the circuit...Ch. 2 - Design a parallelbased clipper that will yield the...Ch. 2 - Sketch the steadystate output voltage for the...Ch. 2 - Consider the circuit in Figure 2.23(a). Let R1=5k...Ch. 2 - Determine the steadystate output voltage O for the...Ch. 2 - Design a parallelbased clipper circuit that will...Ch. 2 - Consider the circuit shown in Figure 2.38, in...Ch. 2 - Consider the circuit shown in Figure 2.39. The...Ch. 2 - Repeat Example 2.11 for the case when R1=8k ,...Ch. 2 - The cutin voltage of each diode in the circuit...Ch. 2 - Prob. 2.12TYUCh. 2 - Consider the OR logic circuit shown in Figure...Ch. 2 - Consider the AND logic circuit shown in Figure...Ch. 2 - (a) Photons with an energy of hv=2eV are incident...Ch. 2 - Determine the value of resistance R required to...Ch. 2 - What characteristic of a diode is used in the...Ch. 2 - Prob. 2RQCh. 2 - Describe a simple fullwave diode rectifier circuit...Ch. 2 - Prob. 4RQCh. 2 - Prob. 5RQCh. 2 - Describe a simple Zener diode voltage reference...Ch. 2 - What effect does the Zener diode resistance have...Ch. 2 - What are the general characteristics of diode...Ch. 2 - Describe a simple diode clipper circuit that...Ch. 2 - Prob. 10RQCh. 2 - What one circuit element, besides a diode, is...Ch. 2 - Prob. 12RQCh. 2 - Describe a diode OR logic circuit. Compare a logic...Ch. 2 - Describe a diode AND logic circuit. Compare a...Ch. 2 - Describe a simple circuit that can be used to turn...Ch. 2 - Consider the circuit shown in Figure P2.1. Let...Ch. 2 - For the circuit shown in Figure P2.1, show that...Ch. 2 - A halfwave rectifier such as shown in Figure...Ch. 2 - Consider the battery charging circuit shown in...Ch. 2 - Figure P2.5 shows a simple fullwave battery...Ch. 2 - The fullwave rectifier circuit shown in Figure...Ch. 2 - The input signal voltage to the fullwave rectifier...Ch. 2 - The output resistance of the fullwave rectifier in...Ch. 2 - Repeat Problem 2.8 for the halfwave rectifier in...Ch. 2 - Consider the halfwave rectifier circuit shown in...Ch. 2 - The parameters of the halfwave rectifier circuit...Ch. 2 - The fullwave rectifier circuit shown in Figure...Ch. 2 - Consider the fullwave rectifier circuit in Figure...Ch. 2 - The circuit in Figure P2.14 is a complementary...Ch. 2 - Prob. 2.15PCh. 2 - A fullwave rectifier is to be designed using the...Ch. 2 - Prob. 2.17PCh. 2 - (a) Sketch o versus time for the circuit in Figure...Ch. 2 - Consider the circuit shown in Figure P2.19. The...Ch. 2 - Consider the Zener diode circuit shown in Figure...Ch. 2 - Consider the Zener diode circuit shown in Figure...Ch. 2 - In the voltage regulator circuit in Figure P2.21,...Ch. 2 - A Zener diode is connected in a voltage regulator...Ch. 2 - Consider the Zener diode circuit in Figure 2.19 in...Ch. 2 - Design a voltage regulator circuit such as shown...Ch. 2 - The percent regulation of the Zener diode...Ch. 2 - A voltage regulator is to have a nominal output...Ch. 2 - Consider the circuit in Figure P2.28. Let V=0 ....Ch. 2 - The secondary voltage in the circuit in Figure...Ch. 2 - The parameters in the circuit shown in Figure...Ch. 2 - Consider the circuit in Figure P2.31. Let V=0 (a)...Ch. 2 - Prob. 2.32PCh. 2 - Each diode cutin voltage is 0.7 V for the circuits...Ch. 2 - The diode in the circuit of Figure P2.34(a) has...Ch. 2 - Consider the circuits shown in Figure P2.35. Each...Ch. 2 - Plot O for each circuit in Figure P2.36 for the...Ch. 2 - Consider the parallel clipper circuit in Figure...Ch. 2 - A car’s radio may be subjected to voltage spikes...Ch. 2 - Sketch the steadystate output voltage O versus...Ch. 2 - Prob. D2.40PCh. 2 - Design a diode clamper to generate a steadystate...Ch. 2 - For the circuit in Figure P2.39(b), let V=0 and...Ch. 2 - Repeat Problem 2.42 for the circuit in Figure...Ch. 2 - The diodes in the circuit in Figure P2.44 have...Ch. 2 - In the circuit in Figure P2.45 the diodes have the...Ch. 2 - The diodes in the circuit in Figure P2.46 have the...Ch. 2 - Consider the circuit shown in Figure P2.47. Assume...Ch. 2 - The diode cutin voltage for each diode in the...Ch. 2 - Consider the circuit in Figure P2.49. Each diode...Ch. 2 - Assume V=0.7V for each diode in the circuit in...Ch. 2 - The cutin voltage of each diode in the circuit...Ch. 2 - Let V=0.7V for each diode in the circuit in Figure...Ch. 2 - For the circuit shown in Figure P2.54, let V=0.7V...Ch. 2 - Assume each diode cutin voltage is V=0.7V for the...Ch. 2 - If V=0.7V for the diode in the circuit in Figure...Ch. 2 - Let V=0.7V for the diode in the circuit in Figure...Ch. 2 - Each diode cutin voltage in the circuit in Figure...Ch. 2 - Let V=0.7V for each diode in the circuit shown in...Ch. 2 - Consider the circuit in Figure P2.61. The output...Ch. 2 - Consider the circuit in Figure P2.62. The output...Ch. 2 - Prob. 2.63PCh. 2 - Consider the circuit shown in Figure P2.64. The...Ch. 2 - The lightemitting diode in the circuit shown in...Ch. 2 - The parameters of D1 and D2 in the circuit shown...Ch. 2 - If the resistor in Example 2.12 is R=2 and the...Ch. 2 - Consider the photodiode circuit shown in Figure...Ch. 2 - Consider the fullwave bridge rectifier circuit....Ch. 2 - Design a simple dc voltage source using a...Ch. 2 - A clipper is to be designed such that O=2.5V for...Ch. 2 - Design a circuit to provide the voltage transfer...
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- 3. Consider the circuit, in which R₁ = 10 KQ2, R2 = 5 KQ, R3 = 1 KQ, and RE = 8 KQ. The supply voltages are +Vcc = 10 V and -VEE = -5 V. Other parameters are ẞF = 100, VBE(On) = 0.7 V, and VCE(Sat) 0.2 V. Rc value will be specified later. (a) (3 points) Draw the dc equivalent circuit of the circuit. VI +Vcc Rc R2 RI R₁ RE -VEE υο R3 (b) Find the Thevenin equivalent voltage source VEQ and input resistance REQ of the DC equivalent circuit. Show your work. +Vcc Rc UC VEQ www REQ VE VEQ = REQ = ΚΩ RE VEEarrow_forwardThe solution is with a pen and paper. Really not smartarrow_forward1. Consider the following mechanical system. Obtain the differential equation model for the system. Write the transfer function of the system also. Note here, input u(t) is force and output x(t) is the displacement of the mass. x (Output) k1 k2 www u(t) m (Input force) No frictionarrow_forward
- NO AI PLEASEarrow_forward2. Consider the following mechanical system with two masses. Find the differential equation model for the system. Find the transfer functions X1(s) and U(s) Note, in the figure, x₁ and x2 are displacements and u is the force. X2(s) U(s) also. k₁ www + b₁ " x1 k2 kz www mi www m2 Đ b₂arrow_forward4. Find the transfer function H(s) = = Vo(s) V₁(s) for the following circuit. Vi R₁ ww A R₂ ww Voarrow_forward
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